PURETEK INDUSTRIAL CO, INC.
===========================

   28800BPS FAX/MODEM ADAPTER (INT)

   Card Type              Fax, Modem (asynchronous)               
   Chip Set               Unidentified                            
   Maximum Data Rate      28.8Kbps                                
   Maximum Fax Rate       14.4Kbps                                
   Data Bus               8-bit ISA                               
   Fax Class              Class I & II                            
   Data Modulation        Bell 103/212A                           
   Protocol                                                       
                          ITU-T V.22, V.22bis, V.23, V.25, V.32,  
                          V.32bis, V.34                           
                                                                  
                          Rockwell V.FC                           
   Fax Modulation         ITU-T V.17, V.21CH2, V.27ter, V.29      
   Protocol               
   Error                  MNP5, V.42, V.42bis                     
   Correction/Compression 

<gopher://bitreich.org/I/th99/t/P-R/52303-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |        Function        |  Label   |   Function   |  Label  |
   |------------------------------------------------------------|
   | Line in                     |    CN1     | Line out | CN2  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |                 Setting                 | Label | Position |
   |-----------------------------------------+-------+----------|
   | i DTR normal                            | SW1/1 |   Off    |
   |-----------------------------------------+-------+----------|
   | Modem ignores DTR                       | SW1/1 |    On    |
   |-----------------------------------------+-------+----------|
   | i Verbose result codes                  | SW1/2 |   Off    |
   |-----------------------------------------+-------+----------|
   | Numeric result codes                    | SW1/2 |    On    |
   |-----------------------------------------+-------+----------|
   | i Result code display enabled           | SW1/3 |    On    |
   |-----------------------------------------+-------+----------|
   | Result code display disabled            | SW1/3 |   Off    |
   |-----------------------------------------+-------+----------|
   | i Local echo enabled                    | SW1/4 |   Off    |
   |-----------------------------------------+-------+----------|
   | Local echo disabled                     | SW1/4 |    On    |
   |-----------------------------------------+-------+----------|
   | i Auto answer disabled                  | SW1/5 |    On    |
   |-----------------------------------------+-------+----------|
   | Auto answer enabled                     | SW1/5 |   Off    |
   |-----------------------------------------+-------+----------|
   | i CD signal normal                      | SW1/6 |   Off    |
   |-----------------------------------------+-------+----------|
   | CD forced high                          | SW1/6 |    On    |
   |-----------------------------------------+-------+----------|
   | i Load Y or Y1 configuration from NVRAM | SW1/7 |   Off    |
   |-----------------------------------------+-------+----------|
   | Load &F0 generic template configuration | SW1/7 |    On    |
   | from ROM                                |       |          |
   |-----------------------------------------+-------+----------|
   | i Smart mode                            | SW1/8 |    On    |
   |-----------------------------------------+-------+----------|
   | Dumb mode                               | SW1/8 |   Off    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    SERIAL PORT ADDRESS                     |
   |------------------------------------------------------------|
   |    Setting    |   JP1/A   |  JP1/B   |  JP1/C   |  JP1/D   |
   |---------------+-----------+----------+----------+----------|
   |  COM1 (3F8h)  |    On     |   Off    |   Off    |   Off    |
   |---------------+-----------+----------+----------+----------|
   | i COM2 (2F8h) |    Off    |    On    |   Off    |   Off    |
   |---------------+-----------+----------+----------+----------|
   |  COM3 (3E8h)  |    Off    |   Off    |    On    |   Off    |
   |---------------+-----------+----------+----------+----------|
   |  COM4 (2E8h)  |    Off    |   Off    |   Off    |    On    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                         INTERRUPT                          |
   |------------------------------------------------------------|
   | Setting  |  JP2/A  |  JP2/B  |  JP2/C  |  JP2/D  |  JP2/E  |
   |----------+---------+---------+---------+---------+---------|
   |    2     |   On    |   Off   |   Off   |   Off   |   Off   |
   |----------+---------+---------+---------+---------+---------|
   |   i 3    |   Off   |   On    |   Off   |   Off   |   Off   |
   |----------+---------+---------+---------+---------+---------|
   |    4     |   Off   |   Off   |   On    |   Off   |   Off   |
   |----------+---------+---------+---------+---------+---------|
   |    5     |   Off   |   Off   |   Off   |   On    |   Off   |
   |----------+---------+---------+---------+---------+---------|
   |    7     |   Off   |   Off   |   Off   |   Off   |   On    |
   +------------------------------------------------------------+

   +---------------------------------------------------------+
   |                  SUPPORTED COMMAND SET                  |
   |---------------------------------------------------------|
   |                    Basic AT Commands                    |
   |---------------------------------------------------------|
   | AT, '+++', A/                                           |
   |---------------------------------------------------------|
   | A, B, E, H, L, M, P, S, T, V                            |
   |---------------------------------------------------------|
   | &G, &T                                                  |
   |---------------------------------------------------------|
   |                       S Registers                       |
   |---------------------------------------------------------|
   | S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12   |
   |---------------------------------------------------------|
   | Note: See MHI Help file for full command documentation. |
   +---------------------------------------------------------+

                     Proprietary AT Command Set

   +------------------------------------------------------------+
   |                           ABORT                            |
   |------------------------------------------------------------|
   | Type:        | Immediate                                   |
   |--------------+---------------------------------------------|
   | Format:      | Any key                                     |
   |--------------+---------------------------------------------|
   | Description: | Aborts answering/originating a call; modem  |
   |              | hangs up.                                   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  BIT-MAPPED REGISTER S13                   |
   |------------------------------------------------------------|
   | Format       | AT [cmds] S13=n [cmds]                      |
   |--------------+---------------------------------------------|
   | Default:     | 0                                           |
   |--------------+---------------------------------------------|
   | Range:       | 0-89                                        |
   |--------------+---------------------------------------------|
   | Unit:        | Bit-mapped                                  |
   |--------------+---------------------------------------------|
   | Description: | Controls DTR reset, DTR dialing, reset      |
   |              | dialing, and MNP3.                          |
   |--------------+---------------------------------------------|
   | Bit  | Value |                  Function                   |
   |------+-------+---------------------------------------------|
   |  0   |   i 0 | DTR normal                                  |
   |      |       |                                             |
   |      |     1 | Reset on low DTR                            |
   |------+-------+---------------------------------------------|
   | 1, 2 |  i 00 | Not used                                    |
   |------+-------+---------------------------------------------|
   |  3   |   i 0 | DTR dialing disabled                        |
   |      |       |                                             |
   |      |     1 | DTR dialing enabled, dials number at        |
   |      |       | position 0 in NVRAM.                        |
   |------+-------+---------------------------------------------|
   |  4   |   i 0 | Reset dialing disabled                      |
   |      |       |                                             |
   |      |     1 | Reset dialing enabled, dials number at      |
   |      |       | position 0 in NVRAM.                        |
   |------+-------+---------------------------------------------|
   |  5   |   i 0 | Not used                                    |
   |------+-------+---------------------------------------------|
   |  6   |   i 0 | MNP 3 enabled                               |
   |      |       |                                             |
   |      |     1 | MNP 3 disabled                              |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  BIT-MAPPED REGISTER S15                   |
   |------------------------------------------------------------|
   | Format       | AT [cmds] S15=n [cmds]                      |
   |--------------+---------------------------------------------|
   | Default:     | 0                                           |
   |--------------+---------------------------------------------|
   | Range:       | 0-56                                        |
   |--------------+---------------------------------------------|
   | Unit:        | Bit-mapped                                  |
   |--------------+---------------------------------------------|
   | Description: | Controls non-error-correcting mode buffer,  |
   |              | MNP4, and BS/DEL switch.                    |
   |--------------+---------------------------------------------|
   | Bit  | Value |                  Function                   |
   |------+-------+---------------------------------------------|
   | 0 -  |   i 0 | Not used                                    |
   |  2   |       |                                             |
   |------+-------+---------------------------------------------|
   |  3   |   i 0 | Non-error-correcting mode transmit buffer   |
   |      |       | set to 1.5KB                                |
   |      |     1 |                                             |
   |      |       | Non-error-correcting mode transmit buffer   |
   |      |       | set to 128 bytes                            |
   |------+-------+---------------------------------------------|
   |  4   |   i 0 | MNP 4 enabled                               |
   |      |       |                                             |
   |      |     1 | MNP 4 disabled                              |
   |------+-------+---------------------------------------------|
   |  5   |   i 0 | Use backspace key for delete disabled       |
   |      |       |                                             |
   |      |     1 | Use backspace key for delete enabled        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  BIT-MAPPED REGISTER S27                   |
   |------------------------------------------------------------|
   | Format       | AT [cmds] S27=n [cmds]                      |
   |--------------+---------------------------------------------|
   | Default:     | 0                                           |
   |--------------+---------------------------------------------|
   | Range:       | 0-191                                       |
   |--------------+---------------------------------------------|
   | Unit:        | Bit-mapped                                  |
   |--------------+---------------------------------------------|
   | Description: | Controls V.21, V.32 encoding and            |
   |              | modulation, V.42 answer tone and handshake, |
   |              | and 9600 result codes.                      |
   |--------------+---------------------------------------------|
   | Bit  | Value |                  Function                   |
   |------+-------+---------------------------------------------|
   |  0   |   i 0 | V.21 disabled                               |
   |      |       |                                             |
   |      |     1 | V.21 enabled                                |
   |------+-------+---------------------------------------------|
   |  1   |   i 0 | V.32 non-trellis coding disabled            |
   |      |       |                                             |
   |      |     1 | V.32 non-trellis coding enabled             |
   |------+-------+---------------------------------------------|
   |  2   |   i 0 | V.32 modulation enabled                     |
   |      |       |                                             |
   |      |     1 | V.32 modulation disabled                    |
   |------+-------+---------------------------------------------|
   |  3   |   i 0 | 2100Hz answer tone enabled                  |
   |      |       |                                             |
   |      |     1 | 2100Hz answer tone disabled                 |
   |------+-------+---------------------------------------------|
   | 5, 4 |  i 00 | V.42 detect, LAPM and MNP enabled           |
   |      |       |                                             |
   |      |    01 | V.42 detect and LAPM enabled, and MNP       |
   |      |       | disabled                                    |
   |      |    10 |                                             |
   |      |       | MNP enabled                                 |
   |      |    11 |                                             |
   |      |       | LAPM enabled                                |
   |------+-------+---------------------------------------------|
   |  6   |   i 0 | Not used                                    |
   |------+-------+---------------------------------------------|
   |  7   |   i 0 | Actual result codes displayed               |
   |      |       |                                             |
   |      |     1 | Force 9600 result codes                     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  BIT-MAPPED REGISTER S56                   |
   |------------------------------------------------------------|
   | Format:      | AT [cmds] S56=n [cmds]                      |
   |--------------+---------------------------------------------|
   | Default:     | 0                                           |
   |--------------+---------------------------------------------|
   | Range:       | 0-255                                       |
   |--------------+---------------------------------------------|
   | Unit:        | Bit-mapped                                  |
   |--------------+---------------------------------------------|
   | Description: | Controls non-linear coding, TX level        |
   |              | deviation, pre-emphasis, pre-coding,        |
   |              | shaping, V.34, and V.FC                     |
   |--------------+---------------------------------------------|
   | Bit  | Value |                  Function                   |
   |------+-------+---------------------------------------------|
   |  0   |   i 0 | Non linear coding enabled                   |
   |      |       |                                             |
   |      |     1 | Non linear coding disabled                  |
   |------+-------+---------------------------------------------|
   |  1   |   i 0 | TX level deviation enabled                  |
   |      |       |                                             |
   |      |     1 | TX level deviation disabled                 |
   |------+-------+---------------------------------------------|
   |  2   |   i 0 | Pre-emphasis enabled                        |
   |      |       |                                             |
   |      |     1 | Pre-emphasis disabled                       |
   |------+-------+---------------------------------------------|
   |  3   |   i 0 | Pre-coding enabled                          |
   |      |       |                                             |
   |      |     1 | Pre-coding disabled                         |
   |------+-------+---------------------------------------------|
   |  4   |   i 0 | Shaping enabled                             |
   |      |       |                                             |
   |      |     1 | Shaping disabled                            |
   |------+-------+---------------------------------------------|
   |  5   |   i 0 | Not used                                    |
   |------+-------+---------------------------------------------|
   |  6   |   i 0 | V.34 enabled                                |
   |      |       |                                             |
   |      |     1 | V.34 disabled                               |
   |------+-------+---------------------------------------------|
   |  7   |   i 0 | V.FC enabled                                |
   |      |       |                                             |
   |      |     1 | V.FC disabled                               |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                         BAUD RATE                          |
   |------------------------------------------------------------|
   | Type:        | Register                                    |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] S54=n [cmds]                      |
   |--------------+---------------------------------------------|
   | Default:     | 0                                           |
   |--------------+---------------------------------------------|
   | Range:       | 0-255                                       |
   |--------------+---------------------------------------------|
   | Unit:        | Bit-mapped                                  |
   |--------------+---------------------------------------------|
   | Description: | Controls baud rate                          |
   |--------------+---------------------------------------------|
   | Bit  | Value |                  Function                   |
   |------+-------+---------------------------------------------|
   |  0   |   i 0 | 2400 baud rate enabled                      |
   |      |       |                                             |
   |      |     1 | 2400 baud rate disabled                     |
   |------+-------+---------------------------------------------|
   |  1   |   i 0 | 2743 baud rate enabled                      |
   |      |       |                                             |
   |      |     1 | 2743 baud rate disabled                     |
   |------+-------+---------------------------------------------|
   |  2   |   i 0 | 2800 baud rate enabled                      |
   |      |       |                                             |
   |      |     1 | 2800 baud rate disabled                     |
   |------+-------+---------------------------------------------|
   |  3   |   i 0 | 3000 baud rate enabled                      |
   |      |       |                                             |
   |      |     1 | 3000 baud rate disabled                     |
   |------+-------+---------------------------------------------|
   |  4   |   i 0 | 3200 baud rate enabled                      |
   |      |       |                                             |
   |      |     1 | 3200 baud rate disabled                     |
   |------+-------+---------------------------------------------|
   |  5   |   i 0 | 3429 baud rate enabled                      |
   |      |       |                                             |
   |      |     1 | 3429 baud rate disabled                     |
   |------+-------+---------------------------------------------|
   |  6   |   i 0 | Call indicate during V.34 operation enabled |
   |      |       |                                             |
   |      |     1 | Call indicate during V.34 operation         |
   |      |       | disabled                                    |
   |------+-------+---------------------------------------------|
   |  7   |   i 0 | V.8 during V.34 operation enabled           |
   |      |       |                                             |
   |      |     1 | V.8 during V.34 operation disabled          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                        BREAK LENGTH                        |
   |------------------------------------------------------------|
   | Type:        | Register                                    |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] S21=n [cmds]                      |
   |--------------+---------------------------------------------|
   | Default:     | 10                                          |
   |--------------+---------------------------------------------|
   | Range:       | Unidentified                                |
   |--------------+---------------------------------------------|
   | Unit:        | .01 second                                  |
   |--------------+---------------------------------------------|
   | Description: | Sets the length of error control mode       |
   |              | breaks sent from DCE to DTE.                |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                         BREAK TYPE                         |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] &Yn [cmds]                        |
   |--------------+---------------------------------------------|
   | Description: | Configures action of break signal           |
   |--------------+---------------------------------------------|
   |   Command    |                  Function                   |
   |--------------+---------------------------------------------|
   |     &Y0      | Empty buffer only                           |
   |--------------+---------------------------------------------|
   |    i &Y1     | Empties buffer and break is sent            |
   |              | immediately                                 |
   |--------------+---------------------------------------------|
   |     &Y2      | Do not empty buffer and break is sent       |
   |              | immediately                                 |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CARRIER DETECT (CD)                     |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] &Cn [cmds]                        |
   |--------------+---------------------------------------------|
   | Description: | Controls the CD signal                      |
   |--------------+---------------------------------------------|
   |   Command    |                  Function                   |
   |--------------+---------------------------------------------|
   |     &C0      | Modem does not respond to CD signal         |
   |--------------+---------------------------------------------|
   |    i &C1     | CD signal normal                            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                        COMPRESSION                         |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] &Kn [cmds]                        |
   |--------------+---------------------------------------------|
   | Description: | Selects data compression                    |
   |--------------+---------------------------------------------|
   |   Command    |                  Function                   |
   |--------------+---------------------------------------------|
   |     &K0      | Data compression disabled                   |
   |--------------+---------------------------------------------|
   |    i &K1     | Auto enabled/disable data compression       |
   |--------------+---------------------------------------------|
   |     &K2      | Data compression enabled                    |
   |--------------+---------------------------------------------|
   |     &K3      | MNP5 data compression disabled              |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              COMPRESSION AND ERROR CORRECTION              |
   |------------------------------------------------------------|
   | Format       | AT [cmds] S51=n [cmds]                      |
   |--------------+---------------------------------------------|
   | Default:     | 0                                           |
   |--------------+---------------------------------------------|
   | Range:       | 0-7                                         |
   |--------------+---------------------------------------------|
   | Unit:        | Bit-mapped                                  |
   |--------------+---------------------------------------------|
   | Description: | Selects compression and error correction    |
   |              | for specific modulations                    |
   |--------------+---------------------------------------------|
   | Bit  | Value |                  Function                   |
   |------+-------+---------------------------------------------|
   |  0   |   i 0 | MNP/V.42 disabled during V.22 operation     |
   |      |       |                                             |
   |      |     1 | MNP/V.42 disabled during V.22 operation     |
   |------+-------+---------------------------------------------|
   |  1   |   i 0 | MNP/V.42 disabled during V.22bis operation  |
   |      |       |                                             |
   |      |     1 | MNP/V.42 disabled during V.22bis operation  |
   |------+-------+---------------------------------------------|
   |  2   |   i 0 | MNP/V.42 disabled during V.32bis operation  |
   |      |       |                                             |
   |      |     1 | MNP/V.42 disabled during V.32bis operation  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                CONNECTION SPEED LOWER LIMIT                |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] &Un [cmds]                        |
   |--------------+---------------------------------------------|
   | Description: | Sets minimum required connection speed      |
   |--------------+---------------------------------------------|
   |   Command    |                  Function                   |
   |--------------+---------------------------------------------|
   |    i &U0     | Disabled                                    |
   |--------------+---------------------------------------------|
   |     &U1      | 300bps                                      |
   |--------------+---------------------------------------------|
   |     &U2      | 1200bps                                     |
   |--------------+---------------------------------------------|
   |     &U3      | 2400bps                                     |
   |--------------+---------------------------------------------|
   |     &U4      | 4800bps                                     |
   |--------------+---------------------------------------------|
   |     &U5      | 7200bps                                     |
   |--------------+---------------------------------------------|
   |     &U6      | 9600bps                                     |
   |--------------+---------------------------------------------|
   |     &U7      | 12Kbps                                      |
   |--------------+---------------------------------------------|
   |     &U8      | 14.4Kbps                                    |
   |--------------+---------------------------------------------|
   |     &U9      | 16.8Kbps                                    |
   |--------------+---------------------------------------------|
   |     &U10     | 19.2Kbps                                    |
   |--------------+---------------------------------------------|
   |     &U11     | 21.6Kbps                                    |
   |--------------+---------------------------------------------|
   |     &U12     | 24Kbps                                      |
   |--------------+---------------------------------------------|
   |     &U13     | 26.4Kbps                                    |
   |--------------+---------------------------------------------|
   |     &U14     | 28.8Kbps                                    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                CONNECTION SPEED UPPER LIMIT                |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] &Nn [cmds]                        |
   |--------------+---------------------------------------------|
   | Description: | Sets maximum required connection speed,     |
   |              | modem will hang up if it cannot connect.    |
   |--------------+---------------------------------------------|
   |   Command    |                  Function                   |
   |--------------+---------------------------------------------|
   |    i &N0     | Variable                                    |
   |--------------+---------------------------------------------|
   |     &N1      | 300bps                                      |
   |--------------+---------------------------------------------|
   |     &N2      | 1200bps                                     |
   |--------------+---------------------------------------------|
   |     &N3      | 2400bps                                     |
   |--------------+---------------------------------------------|
   |     &N4      | 4800bps                                     |
   |--------------+---------------------------------------------|
   |     &N5      | 7200bps                                     |
   |--------------+---------------------------------------------|
   |     &N6      | 9600bps                                     |
   |--------------+---------------------------------------------|
   |     &N7      | 12Kbps                                      |
   |--------------+---------------------------------------------|
   |     &N8      | 14.4Kbps                                    |
   |--------------+---------------------------------------------|
   |     &N9      | 16.8Kbps                                    |
   |--------------+---------------------------------------------|
   |     &N10     | 19.2Kbps                                    |
   |--------------+---------------------------------------------|
   |     &N11     | 21.6Kbps                                    |
   |--------------+---------------------------------------------|
   |     &N12     | 24Kbps                                      |
   |--------------+---------------------------------------------|
   |     &N13     | 26.4Kbps                                    |
   |--------------+---------------------------------------------|
   |     &N14     | 28.8Kbps                                    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    DATA SET READY (DSR)                    |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] &Sn [cmds]                        |
   |--------------+---------------------------------------------|
   | Description: | Selects DSR options                         |
   |--------------+---------------------------------------------|
   |   Command    |                  Function                   |
   |--------------+---------------------------------------------|
   |    i &S0     | DSR forced high                             |
   |--------------+---------------------------------------------|
   |     &S1      | DSR controlled by modem                     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DATA TERMINAL READY (DTR)                  |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] &Dn [cmds]                        |
   |--------------+---------------------------------------------|
   | Description: | Selects modem response to DTR               |
   |--------------+---------------------------------------------|
   |   Command    |                  Function                   |
   |--------------+---------------------------------------------|
   |     &D0      | Modem does not respond to DTR               |
   |--------------+---------------------------------------------|
   |     &D1      | Modem goes to command mode after DTR        |
   |              | toggles                                     |
   |--------------+---------------------------------------------|
   |    i &D2     | Modem uses DTR as normal                    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                            DIAL                            |
   |------------------------------------------------------------|
   | Type:        | Immediate                                   |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] D<#> [cmds]                       |
   |--------------+---------------------------------------------|
   | Example:     | ATDT 443-3388,,,1111;                       |
   |--------------+---------------------------------------------|
   | Description: | Dials telephone number according to any     |
   |              | modifiers included in the string            |
   |--------------+---------------------------------------------|
   | Note:        | Any combination of modifiers can be used to |
   |              | produce the desired dial functions in       |
   |              | sequence.                                   |
   |--------------+---------------------------------------------|
   |   Command    |                  Function                   |
   |--------------+---------------------------------------------|
   |     i P      | Pulse dialing enabled                       |
   |--------------+---------------------------------------------|
   |      T       | Tone dialing enabled                        |
   |--------------+---------------------------------------------|
   |      ,       | Dialing paused for amount of time specified |
   |              | by S8 (or 2 seconds)                        |
   |--------------+---------------------------------------------|
   |      ;       | Modem returned to command state after       |
   |              | dialing. Can only be placed at the end of   |
   |              | the dial command.                           |
   |--------------+---------------------------------------------|
   |      !       | Flash function initiated                    |
   |--------------+---------------------------------------------|
   |      /       | Pause for 125ms then proceed with dial      |
   |              | string                                      |
   |--------------+---------------------------------------------|
   |      @       | Dial, wait for quiet answer, then continue  |
   |              | to execute the rest of the dial string      |
   |--------------+---------------------------------------------|
   |      W       | Dial, wait for second dial tone for amount  |
   |              | of time specified by S6, then continue to   |
   |              | execute the rest of the dial string         |
   |--------------+---------------------------------------------|
   |      R       | Answer mode enabled, originate mode         |
   |              | disabled following handshake initiation     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DIAL - LAST NUMBER                     |
   |------------------------------------------------------------|
   | Type:        | Immediate                                   |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] DL [cmds]                         |
   |--------------+---------------------------------------------|
   | Description: | Re-dial last number dialed                  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    DIAL - STORED NUMBER                    |
   |------------------------------------------------------------|
   | Type:        | Immediate                                   |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] DSn [cmds]                        |
   |--------------+---------------------------------------------|
   | Description: | Dial stored number from memory location n   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  DISCONNECT BUFFER DELAY                   |
   |------------------------------------------------------------|
   | Type:        | Register                                    |
   |--------------+---------------------------------------------|
   | Format       | AT [cmds] S38=n [cmds]                      |
   |--------------+---------------------------------------------|
   | Default:     | 0                                           |
   |--------------+---------------------------------------------|
   | Range:       | Unidentified                                |
   |--------------+---------------------------------------------|
   | Unit:        | 1 second                                    |
   |--------------+---------------------------------------------|
   | Description: | Sets maximum duration allowed during        |
   |              | buffered data calls to perform clearing     |
   |              | functions after losing carrier-signal or    |
   |              | receiving a clear call signal from the      |
   |              | remote modem and before initiating hang-up  |
   |              | process. A value of 0 will allow the modem  |
   |              | to hanging-up after DTR drops.              |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    DTR CHANGE THRESHOLD                    |
   |------------------------------------------------------------|
   | Type:        | Register                                    |
   |--------------+---------------------------------------------|
   | Format       | AT [cmds] S25=n [cmds]                      |
   |--------------+---------------------------------------------|
   | Default:     | 5                                           |
   |--------------+---------------------------------------------|
   | Range:       | Unidentified                                |
   |--------------+---------------------------------------------|
   | Unit:        | .01 second                                  |
   |--------------+---------------------------------------------|
   | Description: | Sets maximum time a change in the DTR       |
   |              | signal will be ignored                      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                ERROR CORRECTION MODE (ARQ)                 |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] &Mn [cmds]                        |
   |--------------+---------------------------------------------|
   | Description: | Selects active error correction protocols   |
   |--------------+---------------------------------------------|
   |   Command    |                  Function                   |
   |--------------+---------------------------------------------|
   |     &M0      | Normal mode only                            |
   |--------------+---------------------------------------------|
   |    i &M4     | Auto-detect mode                            |
   |--------------+---------------------------------------------|
   |     &M5      | ARQ mode only                               |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 ESCAPE CHARACTER RESPONSE                  |
   |------------------------------------------------------------|
   | Type:        | Register                                    |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] S14=n [cmds]                      |
   |--------------+---------------------------------------------|
   | Description: | Controls reaction to escape character       |
   |--------------+---------------------------------------------|
   |   Command    |                  Function                   |
   |--------------+---------------------------------------------|
   |   i S14=0    | Normal operation                            |
   |--------------+---------------------------------------------|
   |    S14=1     | When +++ is received, modem goes on hook,   |
   |              | enters command state and sends NO CARRIER   |
   |              | result code.                                |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   EXTENDED RESULT CODES                    |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] &An [cmds]                        |
   |--------------+---------------------------------------------|
   | Description: | Selects extended result codes               |
   |--------------+---------------------------------------------|
   |   Command    |                  Function                   |
   |--------------+---------------------------------------------|
   |     &A0      | Extended result codes disabled              |
   |--------------+---------------------------------------------|
   |     &A1      | ARQ result codes enabled                    |
   |--------------+---------------------------------------------|
   |     &A2      | ARQ result codes enabled and V.32 result    |
   |              | code added                                  |
   |--------------+---------------------------------------------|
   |    i &A3     | Error control and compression result codes  |
   |              | enabled                                     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  FACTORY DEFAULT PROFILE                   |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] &Fn [cmds]                        |
   |--------------+---------------------------------------------|
   | Description: | Resets values in active profile to values   |
   |              | found in the default profile, which are     |
   |              | READ-ONLY.                                  |
   |------------------------------------------------------------|
   |      Command       |               Function                |
   |--------------------+---------------------------------------|
   |        &F0         | Generic template                      |
   |--------------------+---------------------------------------|
   |       i &F1        | Hardware flow control template        |
   |--------------------+---------------------------------------|
   |        &F2         | Software flow control template        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               FLOW CONTROL CHARACTER - XOFF                |
   |------------------------------------------------------------|
   | Type:        | Register                                    |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] S23=n [cmds]                      |
   |--------------+---------------------------------------------|
   | Default:     | 19                                          |
   |--------------+---------------------------------------------|
   | Range:       | 0-127                                       |
   |--------------+---------------------------------------------|
   | Unit:        | ASCII                                       |
   |--------------+---------------------------------------------|
   | Description: | Sets the character used to represent XOFF.  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                FLOW CONTROL CHARACTER - XON                |
   |------------------------------------------------------------|
   | Type:        | Register                                    |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] S22=n [cmds]                      |
   |--------------+---------------------------------------------|
   | Default:     | 17                                          |
   |--------------+---------------------------------------------|
   | Range:       | 0-127                                       |
   |--------------+---------------------------------------------|
   | Unit:        | ASCII                                       |
   |--------------+---------------------------------------------|
   | Description: | Sets the character used to represent XON.   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 FLOW CONTROL PASS-THROUGH                  |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] &In [cmds]                        |
   |--------------+---------------------------------------------|
   | Description: | Allows modem to act on, then transmit       |
   |              | XON/XOFF characters.                        |
   |--------------+---------------------------------------------|
   |   Command    |                  Function                   |
   |--------------+---------------------------------------------|
   |    i &I0     | Software flow control disabled              |
   |--------------+---------------------------------------------|
   |     &I1      | XON/XOFF passthrough enabled                |
   |--------------+---------------------------------------------|
   |     &I2      | XON/XOFF passthrough disabled               |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     FLOW CONTROL TYPE                      |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] &Hn [cmds]                        |
   |--------------+---------------------------------------------|
   | Description: | Sets type of flow control used by modem     |
   |--------------+---------------------------------------------|
   |   Command    |                  Function                   |
   |--------------+---------------------------------------------|
   |     &H0      | Flow control disabled                       |
   |--------------+---------------------------------------------|
   |    i &H1     | CTS/RTS flow control enabled                |
   |--------------+---------------------------------------------|
   |     &H2      | XON/XOFF flow control enabled               |
   |--------------+---------------------------------------------|
   |     &H3      | CTS/RTS and XON/XOFF flow control enabled   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     FLOW CONTROL TYPE                      |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] &Rn [cmds]                        |
   |--------------+---------------------------------------------|
   | Description: | Controls receive data hardware flow control |
   |              | and RTS signals                             |
   |--------------+---------------------------------------------|
   |   Command    |                  Function                   |
   |--------------+---------------------------------------------|
   |     &R1      | Modem ignores RTS                           |
   |--------------+---------------------------------------------|
   |    i &R2     | Received data to DTE when RTS is on         |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                      HANDSHAKE TIMER                       |
   |------------------------------------------------------------|
   | Type:        | Register                                    |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] S28=n [cmds]                      |
   |--------------+---------------------------------------------|
   | Default:     | 8                                           |
   |--------------+---------------------------------------------|
   | Range:       | 0-255                                       |
   |--------------+---------------------------------------------|
   | Unit:        | .1 second                                   |
   |--------------+---------------------------------------------|
   | Description: | Sets the length of handshake time, so       |
   |              | modems with V.32bis are given a chance to   |
   |              | connect at 9600bps or higher.               |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                      INACTIVITY TIMER                      |
   |------------------------------------------------------------|
   | Type:        | Register                                    |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] S19=n [cmds]                      |
   |--------------+---------------------------------------------|
   | Default:     | 0                                           |
   |--------------+---------------------------------------------|
   | Range:       | Unidentified                                |
   |--------------+---------------------------------------------|
   | Unit:        | 1 minute                                    |
   |--------------+---------------------------------------------|
   | Description: | Sets the length of time that the modem does |
   |              | not receive information before it           |
   |              | disconnects.                                |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  LIST AMPERSAND COMMANDS                   |
   |------------------------------------------------------------|
   | Type:        | Immediate                                   |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] &$ [cmds]                         |
   |--------------+---------------------------------------------|
   | Description: | Displays ampersand (&) commands             |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     LIST DIAL COMMANDS                     |
   |------------------------------------------------------------|
   | Type:        | Immediate                                   |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] D$ [cmds]                         |
   |--------------+---------------------------------------------|
   | Description: | Displays dial commands                      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                      LIST S-REGISTERS                      |
   |------------------------------------------------------------|
   | Type:        | Immediate                                   |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] S$ [cmds]                         |
   |--------------+---------------------------------------------|
   | Description: | Displays the S-registers                    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                      LOCK SERIAL PORT                      |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] &Bn [cmds]                        |
   |--------------+---------------------------------------------|
   | Description: | Sets operation of serial port speed         |
   |--------------+---------------------------------------------|
   |   Command    |                  Function                   |
   |--------------+---------------------------------------------|
   |     &B0      | Serial speed follows connect speed          |
   |--------------+---------------------------------------------|
   |    i &B1     | Serial speed locked                         |
   |--------------+---------------------------------------------|
   |     &B2      | Serial speed locked in ARQ mode only        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                          MAPPING                           |
   |------------------------------------------------------------|
   | Format:         | AT [cmds] S55=n [cmds]                   |
   |-----------------+------------------------------------------|
   | Default:        | 0                                        |
   |-----------------+------------------------------------------|
   | Range:          | 0-15                                     |
   |------------------------------------------------------------|
   | Unit:                     | Bit-mapped                     |
   |------------------------------------------------------------|
   | Description:    | Controls all Map options                 |
   |------------------------------------------------------------|
   |   Bit   |  Value   |               Function                |
   |---------+----------+---------------------------------------|
   |    0    |      i 0 | 8S-2D map enabled                     |
   |         |          |                                       |
   |         |        1 | 8S-2D map disabled                    |
   |------------------------------------------------------------|
   |      1      |    i 0 | 16S-4D map enabled                  |
   |             |        |                                     |
   |             |      1 | 16S-4D map disabled                 |
   |-------------+--------+-------------------------------------|
   |      2      |    i 0 | 32S-2D map enabled                  |
   |             |        |                                     |
   |             |      1 | 32S-2D map disabled                 |
   |-------------+--------+-------------------------------------|
   |      3      |    i 0 | 64S-4D map enabled                  |
   |             |        |                                     |
   |             |      1 | 64S-4D map disabled                 |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                          ON-LINE                           |
   |------------------------------------------------------------|
   | Type:         | Immediate                                  |
   |---------------+--------------------------------------------|
   | Format:       | AT [cmds] On [cmds]                        |
   |---------------+--------------------------------------------|
   | Description:  | Controls on-line command (data             |
   |               | transmission) mode options.                |
   |------------------------------------------------------------|
   |      Note: The O command must be placed at the end of the  |
   |      command string.                                       |
   |------------------------------------------------------------|
   |    Command    |                  Function                  |
   |---------------+--------------------------------------------|
   |      O0       | On-line command mode with no retraining    |
   |               | enabled                                    |
   |---------------+--------------------------------------------|
   |      O1       | On-line command mode with retraining       |
   |               | enabled                                    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                        ON-LINE HELP                        |
   |------------------------------------------------------------|
   | Type:        | Immediate                                   |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] $ [cmds]                          |
   |--------------+---------------------------------------------|
   | Description: | On-line help; displays basic command list   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             POWER-UP/HARD RESET CONFIGURATIONS             |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] Yn [cmds]                         |
   |--------------+---------------------------------------------|
   | Description: | On power-up modem uses default profiles     |
   |--------------+---------------------------------------------|
   |   Command    |                  Function                   |
   |--------------+---------------------------------------------|
   |     i Y0     | Use default setting 0 saved in non-volatile |
   |              | RAM                                         |
   |--------------+---------------------------------------------|
   |      Y1      | Use default setting 1 saved in non-volatile |
   |              | RAM                                         |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    PULSE DIALING RATIO                     |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] &Pn [cmds]                        |
   |--------------+---------------------------------------------|
   | Description: | Selects pulse dial make/break ratio         |
   |--------------+---------------------------------------------|
   |   Command    |                  Function                   |
   |--------------+---------------------------------------------|
   |    i &P0     | 39/61ms at 10pps (North America)            |
   |--------------+---------------------------------------------|
   |     &P1      | 33/67ms at 10pps (Europe)                   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     REPORT INFORMATION                     |
   |------------------------------------------------------------|
   | Type:        | Immediate                                   |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] In [cmds]                         |
   |--------------+---------------------------------------------|
   | Description: | Displays information requested              |
   |--------------+---------------------------------------------|
   |   Command    |                  Function                   |
   |--------------+---------------------------------------------|
   |      I0      | Reports 4-digit product code                |
   |--------------+---------------------------------------------|
   |      I1      | Reports ROM checksum                        |
   |--------------+---------------------------------------------|
   |      I2      | Reports RAM checksum                        |
   |--------------+---------------------------------------------|
   |      I3      | Reports product type                        |
   |--------------+---------------------------------------------|
   |      I4      | Reports current command settings            |
   |--------------+---------------------------------------------|
   |      I5      | Reports NVRAM settings                      |
   |--------------+---------------------------------------------|
   |      I6      | Reports link diagnostics                    |
   |--------------+---------------------------------------------|
   |      I7      | Reports product configuration               |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                        RESULT CODES                        |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] Qn [cmds]                         |
   |--------------+---------------------------------------------|
   | Description: | Enables modem to send result codes to the   |
   |              | DTE                                         |
   |--------------+---------------------------------------------|
   |   Command    |                  Function                   |
   |--------------+---------------------------------------------|
   |     i Q0     | Result code sending enabled                 |
   |--------------+---------------------------------------------|
   |      Q1      | Result code sending disabled                |
   |--------------+---------------------------------------------|
   |      Q2      | Result code sending enabled while in        |
   |              | originate mode                              |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             SELECT CALL PROGRESS RESULT CODES              |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] Xn [cmds]                         |
   |--------------+---------------------------------------------|
   | Description: | Enables selection of tone detection and     |
   |              | associated result code format options       |
   |--------------+---------------------------------------------|
   |   Command    |                  Function                   |
   |--------------+---------------------------------------------|
   |      X0      | Busy and dial tone detection disabled;      |
   |              | result codes 0-4 enabled.                   |
   |--------------+---------------------------------------------|
   |      X1      | Busy and dial tone detection disabled;      |
   |              | result codes 0-5, 10-107 enabled            |
   |--------------+---------------------------------------------|
   |      X2      | Busy tone detection disabled, dial tone     |
   |              | detection enabled; result codes 0-6, 10-107 |
   |              | enabled; also adaptive dialing, wait for    |
   |              | second dial tone, and fast dialing enabled. |
   |--------------+---------------------------------------------|
   |      X3      | Busy tone detection enabled, dial tone      |
   |              | detection disabled; result codes 0-5, 7-107 |
   |              | enabled; also adaptive dialing, and wait    |
   |              | for answer enabled.                         |
   |--------------+---------------------------------------------|
   |     i X4     | Busy and dial tone detection enabled;       |
   |              | result codes 0-1 3-25 enabled; also         |
   |              | adaptive dialing, wait for second dial      |
   |              | tone, wait for answer, and fast dialing     |
   |              | enabled.                                    |
   |------------------------------------------------------------|
   | Note: Valid numeric result codes; 0-8, 10, 13, 18, 20, 21, |
   | 25, 43, 85, 91, 99, 103, and 107.                          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                         SOFT RESET                         |
   |------------------------------------------------------------|
   | Type:        | Immediate                                   |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] Zn [cmds]                         |
   |--------------+---------------------------------------------|
   | Description: | Restores modem profiles previously saved in |
   |              | non-volatile RAM                            |
   |--------------+---------------------------------------------|
   |   Command    |                  Function                   |
   |--------------+---------------------------------------------|
   |     i Z0     | Restore setting used by ATY command         |
   |--------------+---------------------------------------------|
   |      Z1      | Restore setting 0                           |
   |--------------+---------------------------------------------|
   |      Z2      | Restore setting 1                           |
   |--------------+---------------------------------------------|
   |      Z3      | Restore factory setting 0 (AT&F0)           |
   |--------------+---------------------------------------------|
   |      Z4      | Restore factory setting 1 (AT&F1)           |
   |--------------+---------------------------------------------|
   |      Z5      | Restore factory setting 2 (AT&F2)           |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                      STATUS-REGISTER                       |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | Read: AT [cmds] Sn? [cmds]                  |
   |              |                                             |
   |              | Write: AT [cmds] Sn=x [cmds]                |
   |--------------+---------------------------------------------|
   | Description: | Writes to or reads from a specified         |
   |              | register                                    |
   |------------------------------------------------------------|
   |      Note: See the section on S-registers for detailed     |
   |      listing of commonly used S-registers.                 |
   |------------------------------------------------------------|
   |    Command    |                  Function                  |
   |---------------+--------------------------------------------|
   |    Sn.b=x     | Write to register bit b using values 0     |
   |               | (off) and 1 (on) for x                     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    STORE ACTIVE PROFILE                    |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] &Wn [cmds]                        |
   |--------------+---------------------------------------------|
   | Description: | Writes the values for the active profile    |
   |              | into the non-volatile RAM templates         |
   |--------------+---------------------------------------------|
   |   Command    |                  Function                   |
   |--------------+---------------------------------------------|
   |     &W0      | Write the active profile to stored profile  |
   |              | 0                                           |
   |--------------+---------------------------------------------|
   |     &W1      | Write the active profile to stored profile  |
   |              | 1                                           |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   STORE TELEPHONE NUMBER                   |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] &Zn=x [cmds]                      |
   |--------------+---------------------------------------------|
   | Description: | Writes selected telephone numbers into the  |
   |              | non-volatile memory at location n           |
   |------------------------------------------------------------|
   |      Note: The characters described in the D command are   |
   |      valid for use in the &Z command.                      |
   |------------------------------------------------------------|
   |    Command    |                  Function                  |
   |---------------+--------------------------------------------|
   |     &Zn=L     | Writes last executed dial string into the  |
   |               | non-volatile memory at location n          |
   |---------------+--------------------------------------------|
   |     &Zn?      | Displays phone number from non-volatile    |
   |               | memory at location n                       |
   |---------------+--------------------------------------------|
   |     &ZL?      | Displays last executed dial string         |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                         TEST TIMER                         |
   |------------------------------------------------------------|
   | Type:        | Register                                    |
   |--------------+---------------------------------------------|
   | Format       | AT [cmds] S18=n [cmds]                      |
   |--------------+---------------------------------------------|
   | Default:     | 0                                           |
   |--------------+---------------------------------------------|
   | Range:       | Unidentified                                |
   |--------------+---------------------------------------------|
   | Unit:        | 1 second                                    |
   |--------------+---------------------------------------------|
   | Description: | Sets the maximum duration for modem tests   |
   |------------------------------------------------------------|
   |      Note: S18=0 disables the timer and allows an          |
   |      indefinite duration.                                  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     TONE DIALING TEST                      |
   |------------------------------------------------------------|
   | Type:        | Register                                    |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] S16=n [cmds]                      |
   |--------------+---------------------------------------------|
   | Description: | Selects the tone dialing test               |
   |--------------+---------------------------------------------|
   |   Command    |                  Function                   |
   |--------------+---------------------------------------------|
   |   i S16=0    | Tone dialing test disabled                  |
   |--------------+---------------------------------------------|
   |    S16=2     | Tone dialing test enabled                   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                V.32 AND V.32bis MODULATIONS                |
   |------------------------------------------------------------|
   | Format       | AT [cmds] S34=n [cmds]                      |
   |--------------+---------------------------------------------|
   | Default:     | 0                                           |
   |--------------+---------------------------------------------|
   | Range:       | 0-9                                         |
   |--------------+---------------------------------------------|
   | Unit:        | Bit-mapped                                  |
   |--------------+---------------------------------------------|
   | Description: | Controls V.32 and V.32bis modulations.      |
   |--------------+---------------------------------------------|
   | Bit  | Value |                  Function                   |
   |------+-------+---------------------------------------------|
   |  0   |     0 | V.32bis enabled                             |
   |      |       |                                             |
   |      |     1 | V.32bis disabled                            |
   |------+-------+---------------------------------------------|
   | 2, 1 |    00 | Not used                                    |
   |------+-------+---------------------------------------------|
   |  3   |     0 | V.23 modulation disabled                    |
   |      |       |                                             |
   |      |     1 | V.23 modulation enabled                     |
   +------------------------------------------------------------+