E-TECH RESEARCH, INC.
=====================

   PC192MX

   Card Type              Modem(asynchronous)                     
   Chip Set               Unidentified                            
   Maximum Data Rate      19.2Kbps                                
   Maximum Fax Rate       14.4Kbps                                
   Data Bus               8 bit ISA                               
   Fax Class              Class I & II                            
   Data Modulation        AT&T V.32terbo                          
   Protocol                                                       
                          Bell 103A/212A                          
                                                                  
                          ITU-T V.21, V.22, V.22bis, V.23, V.32,  
                          V.32bis                                 
   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/E-H/51796-1.png>
   

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

   +------------------------------------------------------------+
   |                    SERIAL PORT ADDRESS                     |
   |------------------------------------------------------------|
   |    Setting    |    SW1/1     |    SW1/2     |    SW1/3     |
   |---------------+--------------+--------------+--------------|
   |  COM1 (3F8h)  |     Off      |     Off      |     Off      |
   |---------------+--------------+--------------+--------------|
   |  COM2 (2F8h)  |      On      |     Off      |     Off      |
   |---------------+--------------+--------------+--------------|
   |  COM3 (3E8h)  |     Off      |      On      |     Off      |
   |---------------+--------------+--------------+--------------|
   |  COM4 (2E8h)  |      On      |      On      |     Off      |
   |---------------+--------------+--------------+--------------|
   |    (2C0h)     |     Off      |     Off      |      On      |
   |---------------+--------------+--------------+--------------|
   |     (2C8h     |      On      |     Off      |      On      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                         INTERRUPT                          |
   |------------------------------------------------------------|
   |  Setting  |        JP1        |        JP2        | SW1/4  |
   |-----------+-------------------+-------------------+--------|
   |     3     | Pins 2 & 3 closed | Pins 2 & 3 closed |   On   |
   |-----------+-------------------+-------------------+--------|
   |     4     | Pins 1 & 2 closed | Pins 2 & 3 closed |   On   |
   |-----------+-------------------+-------------------+--------|
   |     5     | Pins 2 & 3 closed | Pins 1 & 2 closed |   On   |
   |-----------+-------------------+-------------------+--------|
   |     7     | Pins 1 & 2 closed | Pins 1 & 2 closed |   On   |
   +------------------------------------------------------------+

                     Proprietary AT Command Set

   +------------------------------------------------------------+
   |                        ACCEPT RING                         |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] $Rn [cmds]                        |
   |--------------+---------------------------------------------|
   | Description: | Controls which distinctive rings are        |
   |              | accepted on single physical phone line      |
   |------------------------------------------------------------|
   |      Command      |                Function                |
   |-------------------+----------------------------------------|
   |       i $R0       | Accept all rings                       |
   |-------------------+----------------------------------------|
   |        $R1        | Accept single ring                     |
   |-------------------+----------------------------------------|
   |        $R2        | Accept double ring                     |
   |-------------------+----------------------------------------|
   |        $R3        | Accept single and double rings         |
   |-------------------+----------------------------------------|
   |        $R4        | Accept triple ring                     |
   |-------------------+----------------------------------------|
   |        $R5        | Accept single and triple rings         |
   |-------------------+----------------------------------------|
   |        $R6        | Accept double and triple rings         |
   |-------------------+----------------------------------------|
   |        $R7        | Accept all rings                       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   BIT-MAPPED REGISTERS14                   |
   |------------------------------------------------------------|
   | Format:         | AT [cmds] S14=n [cmds]                   |
   |-----------------+------------------------------------------|
   | Default:        | 138                                      |
   |-----------------+------------------------------------------|
   | Range:          | 0 - 255                                  |
   |-----------------+------------------------------------------|
   | Description:    | Controls command echo, result codes,     |
   |                 | pulse/tone, buffer size and              |
   |                 | answer/originate                         |
   |------------------------------------------------------------|
   |   Bit    |  Value   |               Function               |
   |----------+----------+--------------------------------------|
   |    0     |        0 | Not used                             |
   |------------------------------------------------------------|
   |      1       |      0 | Command echo disabled              |
   |              |        |                                    |
   |              |      1 | Command echo enabled               |
   |--------------+--------+------------------------------------|
   |      2       |      0 | Result codes enabled               |
   |              |        |                                    |
   |              |      1 | Result codes disabled              |
   |--------------+--------+------------------------------------|
   |      3       |      0 | Numeric result codes enabled       |
   |              |        |                                    |
   |              |        | Verbose result codes enabled       |
   |--------------+--------+------------------------------------|
   |      4       |      0 | Not used                           |
   |--------------+--------+------------------------------------|
   |      5       |      0 | Pulse dialing enabled              |
   |              |        |                                    |
   |              |      1 | Tone dialing enabled               |
   |--------------+--------+------------------------------------|
   |      6       |      0 | Normal buffer size                 |
   |              |        |                                    |
   |              |      1 | Small buffer                       |
   |--------------+--------+------------------------------------|
   |      7       |      0 | Answer mode                        |
   |              |        |                                    |
   |              |      1 | Originate mode                     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  BIT-MAPPED REGISTER S21                   |
   |------------------------------------------------------------|
   | Format:        | AT [cmds] S21=n [cmds]                    |
   |----------------+-------------------------------------------|
   | Default:       | 32                                        |
   |----------------+-------------------------------------------|
   | Range:         | 0 - 255                                   |
   |----------------+-------------------------------------------|
   | Description:   | Controls DTR, DCD and long space          |
   |                | disconnect                                |
   |------------------------------------------------------------|
   |   Bit   | Value |                 Function                 |
   |------------------------------------------------------------|
   |    4, 3     |  i | DTR ignored                             |
   |             | 00 |                                         |
   |             |    | Escape command state on low DTR, remain |
   |             | 01 | off hook                                |
   |             |    |                                         |
   |             | 10 | Go on hook and auto answer disabled     |
   |             |    |                                         |
   |             | 11 | Reset on low DTR                        |
   |-------------+----+-----------------------------------------|
   |      5      |  i | DCD forced high or Computer Systems     |
   |             |  0 | Interface compliant                     |
   |             |    |                                         |
   |             |  1 | DCD normal or Port Contender compliant  |
   |-------------+----+-----------------------------------------|
   |      6      |  0 | Not used                                |
   |-------------+----+-----------------------------------------|
   |      7      |  0 | Long space disconnect disabled          |
   |             |    |                                         |
   |             |  i | Long space disconnect enabled           |
   |             |  1 |                                         |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  BIT-MAPPED REGISTER S22                   |
   |------------------------------------------------------------|
   | Format:         | AT [cmds] S22=n [cmds]                   |
   |-----------------+------------------------------------------|
   | Default:        | 68                                       |
   |-----------------+------------------------------------------|
   | Range:          | 0 - 255                                  |
   |-----------------+------------------------------------------|
   | Description:    | Controls speaker, extended result codes  |
   |                 | and Break/make ratio                     |
   |------------------------------------------------------------|
   |   Bit    | Value  |                Function                |
   |------------------------------------------------------------|
   |     3, 2     |  00 | Speaker disabled                      |
   |              |     |                                       |
   |              |  01 | Speaker disabled until DCD high       |
   |              |     |                                       |
   |              |   i | Speaker enabled                       |
   |              |  10 |                                       |
   |              |     | Speaker after dialing until DCD high  |
   |              |  11 |                                       |
   |--------------+-----+---------------------------------------|
   |   6, 5, 4    | 000 | Disabled                              |
   |              |     |                                       |
   |              | 001 | Enable extended result codes          |
   |              |     |                                       |
   |              | 010 | Enable extended result codes and dial |
   |              |     | tone detect                           |
   |              | 011 |                                       |
   |              |     | Enable extended result codes and busy |
   |              |   i | signal detect                         |
   |              | 100 |                                       |
   |              |     | Enable dial tone detect and busy      |
   |              |     | signal detect                         |
   |--------------+-----+---------------------------------------|
   |      7       | i 0 | Break/make ratio 61/39                |
   |              |     |                                       |
   |              |   1 | Break/make ratio 67/33                |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  BIT-MAPPED REGISTER S23                   |
   |------------------------------------------------------------|
   | Format:        | AT [cmds] S23=n [cmds]                    |
   |----------------+-------------------------------------------|
   | Default:       | 23                                        |
   |----------------+-------------------------------------------|
   | Range:         | 0 -255                                    |
   |----------------+-------------------------------------------|
   | Description:   | Controls test options, serial port speed, |
   |                | parity and guard tone                     |
   |------------------------------------------------------------|
   |   Bit   | Value |                 Function                 |
   |---------+-------+------------------------------------------|
   |    0    |     0 | Remotely requested remote digital        |
   |         |       | loopback disabled                        |
   |         |   i 1 |                                          |
   |         |       | Remotely requested remote digital        |
   |         |       | loopback enabled                         |
   |------------------------------------------------------------|
   |      1      |  0 | DTE speed of less than 2400bps only     |
   |             |    | enabled                                 |
   |             |  i |                                         |
   |             |  1 | DTE speed of 2400bps or greater only    |
   |             |    | enabled                                 |
   |-------------+----+-----------------------------------------|
   |      2      |  0 | DTE speed of less than 1200bps only     |
   |             |    | enabled                                 |
   |             |  i |                                         |
   |             |  1 | DTE speed of 1200bps or greater only    |
   |             |    | enabled                                 |
   |-------------+----+-----------------------------------------|
   |    4, 3     | 00 | Parity even                             |
   |             |    |                                         |
   |             |  i | Parity space                            |
   |             | 01 |                                         |
   |             |    | Parity odd                              |
   |             | 10 |                                         |
   |             |    | Parity null                             |
   |             | 11 |                                         |
   |-------------+----+-----------------------------------------|
   |      6      |  i | Guard tone disabled                     |
   |             | 00 |                                         |
   |             |    | 550Hz guard tone enabled                |
   |             | 01 |                                         |
   |             |    | 1800Hz guard tone enabled               |
   |             | 10 |                                         |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  BIT-MAPPED REGISTER S24                   |
   |------------------------------------------------------------|
   | Format:         | AT [cmds] S24=n [cmds]                   |
   |-----------------+------------------------------------------|
   | Default:        | 2                                        |
   |-----------------+------------------------------------------|
   | Range:          | 0 - 255                                  |
   |-----------------+------------------------------------------|
   | Description:    | Controls compromise equalization         |
   |------------------------------------------------------------|
   |   Bit   |    Value     |             Function              |
   |------------------------------------------------------------|
   |  3, 2, 1, 0  |         0000 | 0dB equalization             |
   |              |              |                              |
   |              |         0001 | 2dB equalization             |
   |              |              |                              |
   |              |         0010 | 4dB equalization             |
   |              |              |                              |
   |              |         0011 | 6dB equalization             |
   |              |              |                              |
   |              |         0100 | 8dB equalization             |
   |              |              |                              |
   |              |         0101 | 10dB equalization            |
   |              |              |                              |
   |              |         0110 | 12dB equalization            |
   |              |              |                              |
   |              |         0111 | 14dB equalization            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  BIT-MAPPED REGISTER S28                   |
   |------------------------------------------------------------|
   | Format:           | AT [cmds] S28=n [cmds]                 |
   |-------------------+----------------------------------------|
   | Default:          | 49                                     |
   |-------------------+----------------------------------------|
   | Range:            | 0 - 255                                |
   |-------------------+----------------------------------------|
   | Description:      | Controls speaker and error correction  |
   |------------------------------------------------------------|
   |    Bit     | Value  |               Function               |
   |------------+--------+--------------------------------------|
   | 3, 2, 1, 0 |   0000 | Speaker disabled                     |
   |            |        |                                      |
   |            | i 0001 | Speaker disabled until DCD high      |
   |            |        |                                      |
   |            |   0010 | Speaker enabled                      |
   |            |        |                                      |
   |            |   0011 | Speaker while dialing until DCD high |
   |------------------------------------------------------------|
   |   7, 6, 5, 4   |           0000 | Normal mode              |
   |                |                |                          |
   |                |           0001 | Auto MNP mode            |
   |                |                |                          |
   |                |           0010 | MNP mode                 |
   |                |                |                          |
   |                |         i 0011 | Auto V.42 mode           |
   |                |                |                          |
   |                |           0100 | LAPM mode                |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  BIT-MAPPED REGISTER S29                   |
   |------------------------------------------------------------|
   | Format:           | AT [cmds] S29=n [cmds]                 |
   |-------------------+----------------------------------------|
   | Default:          | 16                                     |
   |-------------------+----------------------------------------|
   | Range:            | 0 - 255                                |
   |-------------------+----------------------------------------|
   | Description:      | Controls DTR and carrier control       |
   |------------------------------------------------------------|
   |    Bit     | Value  |               Function               |
   |------------+--------+--------------------------------------|
   | 3, 2, 1, 0 |   0000 | DTR ignored                          |
   |            |        |                                      |
   |            |   0001 | Escape command state on low DTR,     |
   |            |        | remain off hook                      |
   |            |   0010 |                                      |
   |            |        | Go on hook and auto answer disabled  |
   |            |   0011 |                                      |
   |            |        | Reset on low DTR                     |
   |------------------------------------------------------------|
   |   7, 6, 5, 4   |   0000 | DCD forced high                  |
   |                |        |                                  |
   |                |   0001 | DCD follows remote modem         |
   |                |        |                                  |
   |                |   0010 | Conforms to Computer Systems     |
   |                |        | Interface                        |
   |                |   0011 |                                  |
   |                |        | Conforms to Port Contender       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     BITS PER CHARACTER                     |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] $Ln [cmds]                        |
   |--------------+---------------------------------------------|
   | Description: | Controls bits per character                 |
   |------------------------------------------------------------|
   |     Command      |                Function                 |
   |------------------+-----------------------------------------|
   |       $L0        | 8 bits per character                    |
   |------------------+-----------------------------------------|
   |       $L1        | 9 bits per character                    |
   |------------------+-----------------------------------------|
   |      i $L2       | 10 bits per character                   |
   |------------------+-----------------------------------------|
   |       $L3        | 11 bits per character                   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                        BUFFER SIZE                         |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] $Bn [cmds]                        |
   |--------------+---------------------------------------------|
   | Description: | Controls buffer size                        |
   |------------------------------------------------------------|
   |    Command     |                 Function                  |
   |----------------+-------------------------------------------|
   |     i $B0      | Normal buffer size                        |
   |----------------+-------------------------------------------|
   |      $B1       | Reduce buffer size                        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                         CALLER ID                          |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] +CID=n [cmds]                     |
   |--------------+---------------------------------------------|
   | Description: | Controls caller ID                          |
   |------------------------------------------------------------|
   |    Command     |                 Function                  |
   |----------------+-------------------------------------------|
   |    i +CID=0    | Caller ID report disabled                 |
   |----------------+-------------------------------------------|
   |     +CID=1     | Formatted caller ID report enabled        |
   |----------------+-------------------------------------------|
   |     +CID=2     | Unformatted caller ID report enabled      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                          CANCELER                          |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] $An [cmds]                        |
   |--------------+---------------------------------------------|
   | Description: | Controls canceler length                    |
   |------------------------------------------------------------|
   |    Command    |                  Function                  |
   |---------------+--------------------------------------------|
   |      $A0      | Standard canceler enabled                  |
   |---------------+--------------------------------------------|
   |     i $A1     | Long canceler for round trip delays of     |
   |               | over 36.833ms enabled                      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                       CARRIER DETECT                       |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] &Cn [cmds]                        |
   |--------------+---------------------------------------------|
   | Description: | Controls DCD, Computer Systems Interface    |
   |              | and Port Contender                          |
   |------------------------------------------------------------|
   |    Command    |                  Function                  |
   |---------------+--------------------------------------------|
   |      &C0      | DCD forced high                            |
   |---------------+--------------------------------------------|
   |     i &C1     | DCD follows remote modem                   |
   |---------------+--------------------------------------------|
   |      &C2      | Conforms to Computer Systems Interface     |
   |---------------+--------------------------------------------|
   |      &C3      | Conforms to Port Contender                 |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CLEAR DOWN/DISCONNECT                    |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] Yn [cmds]                         |
   |--------------+---------------------------------------------|
   | Description: | Controls long space disconnect and V.32     |
   |              | clear down                                  |
   |------------------------------------------------------------|
   |    Command    |                  Function                  |
   |---------------+--------------------------------------------|
   |     i Y0      | Long space disconnect disabled             |
   |---------------+--------------------------------------------|
   |      Y1       | Long space disconnect enabled              |
   |---------------+--------------------------------------------|
   |      Y2       | V.32 clear down enabled                    |
   |---------------+--------------------------------------------|
   |      Y3       | V.32 clear down and long space disconnect  |
   |               | enabled                                    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                        COMPRESSION                         |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] $Cn [cmds]                        |
   |--------------+---------------------------------------------|
   | Description: | Controls data compression                   |
   |------------------------------------------------------------|
   |    Command     |                 Function                  |
   |----------------+-------------------------------------------|
   |      $C0       | Data compression disabled                 |
   |----------------+-------------------------------------------|
   |     i $C1      | Data compression enabled                  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CONNECT/SPEED MESSAGE                    |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] $Xn [cmds]                        |
   |--------------+---------------------------------------------|
   | Description: | Controls connect and speed message          |
   |              | displayed                                   |
   |------------------------------------------------------------|
   |    Command    |                  Function                  |
   |---------------+--------------------------------------------|
   |      $X0      | Normal connect and DCE speed message       |
   |               | enabled                                    |
   |---------------+--------------------------------------------|
   |      $X1      | Normal connect and DTE speed message       |
   |               | enabled                                    |
   |---------------+--------------------------------------------|
   |     i $X2     | Extended connect and DCE speed message     |
   |               | enabled                                    |
   |---------------+--------------------------------------------|
   |      $X3      | Extended connect and DTE speed message     |
   |               | enabled                                    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                       DIAL INTERRUPT                       |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] $Kn [cmds]                        |
   |--------------+---------------------------------------------|
   | Description: | Controls dial interrupt                     |
   |------------------------------------------------------------|
   |    Command     |                 Function                  |
   |----------------+-------------------------------------------|
   |      $K0       | Dial interrupt disabled                   |
   |----------------+-------------------------------------------|
   |     i $K1      | Dial interrupt enabled                    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DISPLAY STORED INFORMATION                 |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] &Vn [cmds]                        |
   |--------------+---------------------------------------------|
   | Description: | Displays stored phone numbers,              |
   |              | configuration profiles and S registers      |
   |------------------------------------------------------------|
   |    Command    |                  Function                  |
   |---------------+--------------------------------------------|
   |      &V0      | Display stored phone numbers               |
   |---------------+--------------------------------------------|
   |      &V1      | Display current configuration profiles     |
   |---------------+--------------------------------------------|
   |      &V2      | Display contents of S registers            |
   |---------------+--------------------------------------------|
   |      &V3      | Display stored profiles briefly            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                         DSR SIGNAL                         |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] &Sn [cmds]                        |
   |--------------+---------------------------------------------|
   | Description: | Controls DSR, Computer Systems Interface    |
   |              | and Port Contender                          |
   |------------------------------------------------------------|
   |    Command    |                  Function                  |
   |---------------+--------------------------------------------|
   |     i &S0     | DSR forced high                            |
   |---------------+--------------------------------------------|
   |      &S1      | DSR follows remote modem                   |
   |---------------+--------------------------------------------|
   |      &S2      | Conforms to Computer Systems Interface     |
   |---------------+--------------------------------------------|
   |      &S3      | Conforms to Port Contender                 |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                        EQUALIZATION                        |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] $Qn [cmds]                        |
   |--------------+---------------------------------------------|
   | Description: | Controls compromise equalization            |
   |------------------------------------------------------------|
   |       Command        |              Function               |
   |----------------------+-------------------------------------|
   |         $Q0          | 0dB equalization                    |
   |----------------------+-------------------------------------|
   |         $Q1          | 2dB equalization                    |
   |----------------------+-------------------------------------|
   |        i $Q2         | 4dB equalization                    |
   |----------------------+-------------------------------------|
   |         $Q3          | 6dB equalization                    |
   |----------------------+-------------------------------------|
   |         $Q4          | 8dB equalization                    |
   |----------------------+-------------------------------------|
   |         $Q5          | 10dB equalization                   |
   |----------------------+-------------------------------------|
   |         $Q6          | 12dB equalization                   |
   |----------------------+-------------------------------------|
   |         $Q7          | 14dB equalization                   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                        FLOW CONTROL                        |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] $Fn [cmds]                        |
   |--------------+---------------------------------------------|
   | Description: | Controls XON/XOFF, ENQ/ACK, DTR/DSR and     |
   |              | CTS/RTS flow control                        |
   |------------------------------------------------------------|
   |      Command       |               Function                |
   |--------------------+---------------------------------------|
   |        $F0         | XON/XOFF enabled                      |
   |--------------------+---------------------------------------|
   |        $F1         | XON/XOFF passthrough enabled          |
   |--------------------+---------------------------------------|
   |        $F2         | ENQ/ACK enabled                       |
   |--------------------+---------------------------------------|
   |        $F3         | DTR/DSR enabled                       |
   |--------------------+---------------------------------------|
   |       i $F4        | CTS/RTS enabled                       |
   |--------------------+---------------------------------------|
   |        $F5         | Flow control disabled                 |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                      INACTIVITY TIMER                      |
   |------------------------------------------------------------|
   | Type        | Configuration                                |
   |-------------+----------------------------------------------|
   | Format      | AT [cmds] S36=n [cmds]                       |
   |-------------+----------------------------------------------|
   | Default     | 0                                            |
   |-------------+----------------------------------------------|
   | Range       | 0 - 255                                      |
   |-------------+----------------------------------------------|
   | Unit        | 1 minute                                     |
   |-------------+----------------------------------------------|
   | Description | Sets length of time the modem waits before   |
   |             | disconnect if no data sent or received       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                         LINE SPEED                         |
   |------------------------------------------------------------|
   | Format:          | AT [cmds] S37=n [cmds]                  |
   |------------------+-----------------------------------------|
   | Default:         | 0                                       |
   |------------------+-----------------------------------------|
   | Range:           | 0 -13                                   |
   |------------------+-----------------------------------------|
   | Description:     | Sets connect speed                      |
   |------------------------------------------------------------|
   |     Bit     | Value |               Function               |
   |-------------+-------+--------------------------------------|
   | 3, 2, 1, 0  |     0 | Connect speed follows DTE speed      |
   |             |       |                                      |
   |             |     1 | Connect at V.23 75/1200bps           |
   |             |       |                                      |
   |             |    10 | Not used                             |
   |             |       |                                      |
   |             |    11 | Connect at 300bps                    |
   |             |       |                                      |
   |             |   100 | Not used                             |
   |             |       |                                      |
   |             |   101 | Connect at 1200bps                   |
   |             |       |                                      |
   |             |   110 | Connect at 2400bps                   |
   |             |       |                                      |
   |             |   111 | Connect at 4800bps                   |
   |             |       |                                      |
   |             |  1000 | Connect at 7200bps                   |
   |             |       |                                      |
   |             |  1001 | Connect at 9600bps                   |
   |             |       |                                      |
   |             |  1010 | Connect at 12.0Kbps                  |
   |             |       |                                      |
   |             |  1011 | Connect at 14.4Kbps                  |
   |             |       |                                      |
   |             |  1100 | Connect at 16.8Kbps                  |
   |             |       |                                      |
   |             |  1101 | Connect at 19.2Kbps                  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                         LINE SPEED                         |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] &Ln [cmds]                        |
   |--------------+---------------------------------------------|
   | Description: | Controls speed at which modem attempts to   |
   |              | connect                                     |
   |------------------------------------------------------------|
   |    Command    |                  Function                  |
   |---------------+--------------------------------------------|
   |     i &L0     | Line speed follows DTE speed. If DTE is    |
   |               | over 9600bps, attempt connect at 14.4Kbps  |
   |               | or 19.2Kbps                                |
   |---------------+--------------------------------------------|
   |      &L1      | Connect at V.23 75/1200bps                 |
   |---------------+--------------------------------------------|
   |      &L2      | Not used                                   |
   |---------------+--------------------------------------------|
   |      &L3      | Connect at 300bps                          |
   |---------------+--------------------------------------------|
   |      &L4      | Not used                                   |
   |---------------+--------------------------------------------|
   |      &L5      | Connect at 1200bps                         |
   |---------------+--------------------------------------------|
   |      &L6      | Connect at 2400bps                         |
   |---------------+--------------------------------------------|
   |      &L7      | Connect at 4800bps                         |
   |---------------+--------------------------------------------|
   |      &L8      | Connect at 7200bps                         |
   |---------------+--------------------------------------------|
   |      &L9      | Connect at 9600bps                         |
   |---------------+--------------------------------------------|
   |     &L10      | Connect at 12.0Kbps                        |
   |---------------+--------------------------------------------|
   |     &L11      | Connect at 14.4Kbps                        |
   |---------------+--------------------------------------------|
   |     &L12      | Connect at 16.8bps                         |
   |---------------+--------------------------------------------|
   |     &L13      | Connect at 19.2Kbps                        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                           PARITY                           |
   |------------------------------------------------------------|
   | Format:        | AT [cmds] S30=n [cmds]                    |
   |----------------+-------------------------------------------|
   | Default:       | 0                                         |
   |----------------+-------------------------------------------|
   | Range:         | 0 - 255                                   |
   |----------------+-------------------------------------------|
   | Description:   | Controls parity                           |
   |------------------------------------------------------------|
   |   Bit   |  Value   |               Function                |
   |------------------------------------------------------------|
   |    1, 0     |       00 | Parity space                      |
   |             |          |                                   |
   |             |       01 | Parity even                       |
   |             |          |                                   |
   |             |       10 | Parity null                       |
   |             |          |                                   |
   |             |       11 | Parity odd                        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                          PROTOCOL                          |
   |------------------------------------------------------------|
   | Format:        | AT [cmds] S27=n [cmds]                    |
   |----------------+-------------------------------------------|
   | Default:       | 64                                        |
   |----------------+-------------------------------------------|
   | Range:         | 0 - 255                                   |
   |----------------+-------------------------------------------|
   | Description:   | Selects data modulation protocol          |
   |------------------------------------------------------------|
   |   Bit    |      Value      |           Function            |
   |----------+-----------------+-------------------------------|
   |    0     |             i 0 | ITU-T mode                    |
   |          |                 |                               |
   |          |               1 | Bell mode                     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                          PROTOCOL                          |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] $En [cmds]                        |
   |--------------+---------------------------------------------|
   | Description: | Controls protocol used                      |
   |------------------------------------------------------------|
   |      Command      |                Function                |
   |-------------------+----------------------------------------|
   |        $E0        | Normal mode                            |
   |-------------------+----------------------------------------|
   |        $E1        | Auto MNP mode                          |
   |-------------------+----------------------------------------|
   |        $E2        | MNP mode                               |
   |-------------------+----------------------------------------|
   |       i $E3       | Auto V.42 mode                         |
   |-------------------+----------------------------------------|
   |        $E4        | LAPM mode                              |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                          RETRAIN                           |
   |------------------------------------------------------------|
   | Format:          | AT [cmds] S15=n [cmds]                  |
   |------------------+-----------------------------------------|
   | Default:         | 5                                       |
   |------------------+-----------------------------------------|
   | Range:           | 0 -255                                  |
   |------------------+-----------------------------------------|
   | Description:     | Controls number of retrains per minute  |
   |                  | allowed                                 |
   |------------------------------------------------------------|
   |    Bit    |  Value  |               Function               |
   |-----------+---------+--------------------------------------|
   | 3, 2, 1,  |    0000 | Not used                             |
   |     0     |         |                                      |
   |------------------------------------------------------------|
   |  7, 6, 5, 4   |    i | Disconnect If more than four        |
   |               | 0000 | retrain attempts in three minutes   |
   |               |      |                                     |
   |               | 0001 | Disconnect If more than four        |
   |               |      | retrain attempts in four minutes    |
   |               | 0010 |                                     |
   |               |      | Disconnect If more than four        |
   |               | 0011 | retrain attempts in five minutes    |
   |               |      |                                     |
   |               | 0100 | Unlimited retrain allowed           |
   |               |      |                                     |
   |               |      | Retrain disabled                    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                       RETRAIN LIMIT                        |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] &En [cmds]                        |
   |--------------+---------------------------------------------|
   | Description: | Controls number of retrains per minute      |
   |              | allowed                                     |
   |------------------------------------------------------------|
   |    Command     |                 Function                  |
   |----------------+-------------------------------------------|
   |     i &E0      | Disconnect If more than four retrain      |
   |                | attempts in three minutes                 |
   |----------------+-------------------------------------------|
   |      &E1       | Disconnect If more than four retrain      |
   |                | attempts in four minutes                  |
   |----------------+-------------------------------------------|
   |      &E2       | Disconnect If more than four retrain      |
   |                | attempts in five minutes                  |
   |----------------+-------------------------------------------|
   |      &E3       | Unlimited retrain allowed                 |
   |----------------+-------------------------------------------|
   |      &E4       | Retrain disabled                          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                      SPEED CONVERSION                      |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] $Sn [cmds]                        |
   |--------------+---------------------------------------------|
   | Description: | Controls speed conversion                   |
   |------------------------------------------------------------|
   |    Command     |                 Function                  |
   |----------------+-------------------------------------------|
   |     i $S0      | Speed conversion enabled                  |
   |----------------+-------------------------------------------|
   |      $S8       | Speed conversion disabled                 |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                        TEST STATUS                         |
   |------------------------------------------------------------|
   | Format       | AT [cmds] S16=n [cmds]                      |
   |--------------+---------------------------------------------|
   | Default:     | Read-only                                   |
   |--------------+---------------------------------------------|
   | Range:       | 0 - 255                                     |
   |--------------+---------------------------------------------|
   | Unit:        | Bit-mapped                                  |
   |--------------+---------------------------------------------|
   | Description: | Contains status of loopback tests           |
   |--------------+---------------------------------------------|
   | Bit  | Value |                  Function                   |
   |------+-------+---------------------------------------------|
   |  0   |     0 | Local analog loopback test disabled         |
   |      |       |                                             |
   |      |     1 | Local analog loopback test enabled          |
   |------+-------+---------------------------------------------|
   |  1   |     0 | Not used                                    |
   |------+-------+---------------------------------------------|
   |  2   |     0 | Local digital loopback test disabled        |
   |      |       |                                             |
   |      |     1 | Local digital loopback test enabled         |
   |------+-------+---------------------------------------------|
   |  3   |     0 | Remotely requested remote digital loopback  |
   |      |       | enabled                                     |
   |      |     1 |                                             |
   |      |       | Remotely requested remote digital loopback  |
   |      |       | disabled                                    |
   |------+-------+---------------------------------------------|
   |  4   |     0 | Locally requested remote digital loopback   |
   |      |       | test not in progress                        |
   |      |     1 |                                             |
   |      |       | Locally requested remote digital loopback   |
   |      |       | test in progress                            |
   |------+-------+---------------------------------------------|
   |  5   |     0 | Remote digital loopback with local          |
   |      |       | self-test disabled                          |
   |      |     1 |                                             |
   |      |       | Remote digital loopback with local          |
   |      |       | self-test enabled                           |
   |------+-------+---------------------------------------------|
   |  6   |     0 | Local analog loopback with local self-test  |
   |      |       | disabled                                    |
   |      |     1 |                                             |
   |      |       | Local analog loopback with local self-test  |
   |      |       | enabled                                     |
   |------+-------+---------------------------------------------|
   |  7   |     0 | Not used                                    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     TRANSMISSION LEVEL                     |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] $Tn [cmds]                        |
   |--------------+---------------------------------------------|
   | Description: | Controls transmission level                 |
   |------------------------------------------------------------|
   |         Command         |             Function             |
   |-------------------------+----------------------------------|
   |        $T0 - $T4        | -10dBm                           |
   |-------------------------+----------------------------------|
   |          i $T5          | -10dBm                           |
   |-------------------------+----------------------------------|
   |           $T6           | -12dBm                           |
   |-------------------------+----------------------------------|
   |           $T7           | -14dBm                           |
   |-------------------------+----------------------------------|
   |           $T8           | -16dBm                           |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                         V.32terbo                          |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] $Vn [cmds]                        |
   |--------------+---------------------------------------------|
   | Description: | Controls AT&T V.32terbo                     |
   |------------------------------------------------------------|
   |     Command      |                Function                 |
   |------------------+-----------------------------------------|
   |       $V0        | V.32terbo disabled                      |
   |------------------+-----------------------------------------|
   |      i $V1       | V.32terbo enabled                       |
   +------------------------------------------------------------+