ACER, INC.
==========

   MAGIC F56

   Card Type              Modem                                   
   Chipset                Unidentified                            
   I/O Options            Line in, line out, audio card           
                          connector, wake-up ring connector       
                                                                  
                          microphone in, speaker out              
   Maximum Modem Rate     56.0Kbps                                
   Maximum Fax Rate       14.4Kbps                                
   Modem Modulation       Bell 103/212A                           
   Protocol                                                       
                          ITU-T V.22bis,V.32, V.32bis, V.34,      
                          K56flex                                 
   Fax Modulation         ITU-T V.17, V21 CH2, V27ter, V.29       
   Protocol               
   Fax Class              Class I                                 
   Error                  MNP5, V.42, V.42bis                     
   Correction/Compression 
   Data Bus               16-bit ISA                              

<gopher://bitreich.org/I/th99/t/A-B/55347-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |     Function      | Label |        Function        | Label |
   |-------------------+-------+------------------------+-------|
   | Line in (RJ-11)   |  CN1  | Microphone in          |  CN4  |
   |-------------------+-------+------------------------+-------|
   | Line out (RJ-11)  |  CN2  | Wake-up ring connector |  CN5  |
   |-------------------+-------+------------------------+-------|
   | Speaker out       |  CN3  | Audio card connector   |  CN6  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   SUPPORTED COMMAND SET                    |
   |------------------------------------------------------------|
   |                     Basic AT Commands                      |
   |------------------------------------------------------------|
   | AT, A/                                                     |
   |------------------------------------------------------------|
   | A, B, E, H, M, O, P, Q, X, Y, Z                            |
   |------------------------------------------------------------|
   | &C, &F, &M, &P, &Q, &R, &T, &V, &W, &Y                     |
   |------------------------------------------------------------|
   |                    Extended AT Commands                    |
   |------------------------------------------------------------|
   | \K, \N, \V                                                 |
   |------------------------------------------------------------|
   | %E, %L, %Q                                                 |
   |------------------------------------------------------------|
   |                        S Registers                         |
   |------------------------------------------------------------|
   | S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12,     |
   | S14, S16, S18, S21, S24, S25, S29                          |
   |------------------------------------------------------------|
   | S30, S31, S32, S33, S38, S91, S92, S95                     |
   |------------------------------------------------------------|
   |                      Special Commands                      |
   |------------------------------------------------------------|
   | +MS                                                        |
   |------------------------------------------------------------|
   |                       Voice Commands                       |
   |------------------------------------------------------------|
   | #CLS, #MDL?, #MFL, #REV?, #VBQ, #VBT, #VCI?  #VRA,  #VRN,  |
   | #VRX, #VSD                                                 |
   |------------------------------------------------------------|
   | Note:                                                      |
   |                                                            |
   | See MHI Help File for full command documentation.          |
   +------------------------------------------------------------+

   Proprietary AT Command Set

   +------------------------------------------------------------+
   |                    AUTO-MODE DETECTION                     |
   |------------------------------------------------------------|
   | Type:            | Configuration                           |
   |------------------+-----------------------------------------|
   |   | Format:      | AT [cmds] N n [cmds]                    |
   |---+--------------+-----------------------------------------|
   |   | Description: | Selects various options for the         |
   |   |              | automatic detection and negotiation of  |
   |   |              | protocols during the handshake process  |
   |   |              | if the modem is communicating with a    |
   |   |              | remote modem of dissimilar speed.       |
   |---+--------------+-----------------------------------------|
   |   |   Command    |                Function                 |
   |---+--------------+-----------------------------------------|
   |   |      N0      | Auto-mode detection disabled. Handshake |
   |   |              | begins at line speed designated by the  |
   |   |              | S37 register                            |
   |---+--------------+-----------------------------------------|
   |>> |      N1      | Auto-mode detection enabled. Handshake  |
   |   |              | conducted according to the automode     |
   |   |              | algorithm supported by the modem        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    DATA SET READY (DSR)                    |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] &S n [cmds]                       |
   |--------------+---------------------------------------------|
   | Description: | Selects DSR options                         |
   |--------------+---------------------------------------------|
   |   Command    |                  Function                   |
   |--------------+---------------------------------------------|
   |     &S0      | DSR forced high                             |
   |--------------+---------------------------------------------|
   |     &S1      | DSR high only while modem is handshaking or |
   |              | connected                                   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DATA TERMINAL READY (DTR)                  |
   |------------------------------------------------------------|
   | Type:        | Configuration |                             |
   |--------------+---------------|                             |
   | Format:      | AT [cmds] &D  |                             |
   |              | n [cmds]      |                             |
   |--------------+---------------|                             |
   | Description: | Selects modem |                             |
   |              | response to   |                             |
   |              | DTR           |                             |
   |------------------------------------------------------------|
   |      Note: The action each variant of &D causes depends on |
   |      the setting of &Q                                     |
   |------------------------------------------------------------|
   |  &Q Setting  |      &D0      |   &D1   |   &D2   |   &D3   |
   |--------------+---------------+---------+---------+---------|
   |  &Q0, &Q5,   |   Command 0   | Command | Command | Command |
   |     &Q6      |               |    1    |    2    |    4    |
   |--------------+---------------+---------+---------+---------|
   |   &Q1, &Q4   |   Command 2   | Command | Command | Command |
   |              |               |    1    |    2    |    4    |
   |--------------+---------------+---------+---------+---------|
   |   &Q2, &3    |   Command 2   | Command | Command | Command |
   |              |               |    2    |    2    |    2    |
   |--------------+---------------+-----------------------------|
   |   Command    |   Function    |                             |
   |--------------+---------------|                             |
   |  Command 0   | Modem does    |                             |
   |              | not respond   |                             |
   |              | to DTR        |                             |
   |--------------+---------------|                             |
   |  Command 1   | Modem goes to |                             |
   |              | command mode  |                             |
   |              | after DTR     |                             |
   |              | goes is off   |                             |
   |--------------+---------------|                             |
   |  Command 2   | Modem goes to |                             |
   |              | command mode  |                             |
   |              | and           |                             |
   |              | disconnects   |                             |
   |              | (hangs up)    |                             |
   |              | after DTR     |                             |
   |              | goes off;     |                             |
   |              | Auto-Answer   |                             |
   |              | is disabled.  |                             |
   |--------------+---------------|                             |
   |  Command 3   | Modem is      |                             |
   |              | initialized   |                             |
   |              | after DTR     |                             |
   |              | goes off      |                             |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                        FLOW CONTROL                        |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] &K n [cmds]                       |
   |--------------+---------------------------------------------|
   | Description: | Enables flow control options                |
   |--------------+---------------------------------------------|
   |   Command    |                  Function                   |
   |--------------+---------------------------------------------|
   |     &K0      | Flow control disabled                       |
   |--------------+---------------------------------------------|
   |     &K3      | RTS/CTS flow control enabled                |
   |--------------+---------------------------------------------|
   |     &K4      | XON/XOFF flow control enabled               |
   |--------------+---------------------------------------------|
   |     &K5      | Transparent XON/XOFF flow control enabled   |
   |--------------+---------------------------------------------|
   |     &K6      | Both RTS/CTS & XON/XOFF flow control        |
   |              | enabled                                     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                         GUARD TONE                         |
   |------------------------------------------------------------|
   | Type:            | Configuration                           |
   |------------------+-----------------------------------------|
   |   | Format:      | AT [cmds] &G n [cmds]                   |
   |---+--------------+-----------------------------------------|
   |   | Description: | Commands the modem to transmit a guard  |
   |   |              | tone in V.22/V.22bis                    |
   |---+--------------+-----------------------------------------|
   |   |   Command    |                Function                 |
   |---+--------------+-----------------------------------------|
   |>> |     &G0      | Guard tone disabled                     |
   |---+--------------+-----------------------------------------|
   |   |     &G1      | Guard tone disabled                     |
   |---+--------------+-----------------------------------------|
   |   |     &G2      | 1800Hz guard tone enabled               |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     REPORT INFORMATION                     |
   |------------------------------------------------------------|
   | Type:        | Immediate                                   |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] I n [cmds]                        |
   |--------------+---------------------------------------------|
   | Description: | Displays information requested              |
   |--------------+---------------------------------------------|
   |   Command    |                  Function                   |
   |--------------+---------------------------------------------|
   |      I0      | Reports product ID code                     |
   |--------------+---------------------------------------------|
   |      I1      | Reports ROM checksum                        |
   |--------------+---------------------------------------------|
   |      I2      | Reports "OK"                                |
   |--------------+---------------------------------------------|
   |      I3      | Reports firmware revision, model, and       |
   |              | interface type                              |
   |--------------+---------------------------------------------|
   |      I4      | Reports OEM identifier string in either     |
   |              | binary or ASCII format                      |
   |--------------+---------------------------------------------|
   |      I5      | Reports country code                        |
   |--------------+---------------------------------------------|
   |      I6      | Reports data pump model and internal code   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                       SPEAKER VOLUME                       |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] L n [cmds]                        |
   |--------------+---------------------------------------------|
   | Description: | Controls speaker volume                     |
   |--------------+---------------------------------------------|
   |   Command    |                  Function                   |
   |--------------+---------------------------------------------|
   |      L0      | Low volume setting                          |
   |--------------+---------------------------------------------|
   |      L1      | Low volume setting                          |
   |--------------+---------------------------------------------|
   |      L2      | Medium volume setting                       |
   |--------------+---------------------------------------------|
   |      L3      | Highest volume setting                      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   STORE TELEPHONE NUMBER                   |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] &Z n =(phone # & modifiers)       |
   |--------------+---------------------------------------------|
   | 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; telephone numbers    |
   |      and modifiers can include up to 34 characters.        |
   |------------------------------------------------------------|
   |   Command    |                  Function                   |
   |--------------+---------------------------------------------|
   |     &Z0      | Telephone number stored in memory location  |
   |              | 0                                           |
   |--------------+---------------------------------------------|
   |     &Z1      | Telephone number stored in memory location  |
   |              | 1                                           |
   |--------------+---------------------------------------------|
   |     &Z2      | Telephone number stored in memory location  |
   |              | 2                                           |
   |--------------+---------------------------------------------|
   |     &Z3      | Telephone number stored in memory location  |
   |              | 3                                           |
   +------------------------------------------------------------+

   VOICE COMMANDS

   +------------------------------------------------------------+
   |                       DATA/DSVD MODE                       |
   |------------------------------------------------------------|
   | Type:            | Configuration                           |
   |------------------+-----------------------------------------|
   |   | Format:      | AT [cmds] -SMS= n [cmds]                |
   |---+--------------+-----------------------------------------|
   |   | Description: | Selects data or DSVD mode               |
   |---+--------------+-----------------------------------------|
   |   |   Command    |                Function                 |
   |---+--------------+-----------------------------------------|
   |>> |    -SMS=0    | Data mode                               |
   |---+--------------+-----------------------------------------|
   |   |    -SMS=2    | DSVD mode                               |
   |---+--------------+-----------------------------------------|
   |   |    -SMS=3    | Automatic mode selection                |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                        VOICE DEVICE                        |
   |------------------------------------------------------------|
   | Type:            | Configuration                           |
   |------------------+-----------------------------------------|
   |   | Format:      | AT [cmds] #VLS= n [cmds]                |
   |---+--------------+-----------------------------------------|
   |   | Description: | Selects the I/O device for the DSP      |
   |   |              | chip.                                   |
   |---+--------------+-----------------------------------------|
   |   |   Command    |                Function                 |
   |---+--------------+-----------------------------------------|
   |>> |    #VLS=0    | Headset used for voice I/O.             |
   |---+--------------+-----------------------------------------|
   |   |    #VLS=6    | Speakerphone used for voice I/O.        |
   +------------------------------------------------------------+

   S(STATUS) -REGISTERS

   +------------------------------------------------------------+
   |        AUTOSYNC HDLC ADDRESS OR BSC SYNC CHARACTER         |
   |------------------------------------------------------------|
   | Type:        | Register                                    |
   |--------------+---------------------------------------------|
   | Format       | AT [cmds] S20= n [cmds]                     |
   |--------------+---------------------------------------------|
   | Default:     | 0                                           |
   |--------------+---------------------------------------------|
   | Range:       | 0-255                                       |
   |--------------+---------------------------------------------|
   | Unit:        | ASCII                                       |
   |--------------+---------------------------------------------|
   | Description: | Selects the autosync HDLC address or BSC    |
   |              | character                                   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  BIT-MAPPED REGISTER S19                   |
   |------------------------------------------------------------|
   | Format       | AT [cmds] S19=  |                           |
   |              | n [cmds]        |                           |
   |--------------+-----------------|                           |
   | Range:       | Unidentified    |                           |
   |--------------+-----------------|                           |
   | Unit:        | Bit-mapped      |                           |
   |--------------+-----------------|                           |
   | Description: | Selects         |                           |
   |              | BSC/HDLC        |                           |
   |              | format, adress  |                           |
   |              | detection, line |                           |
   |              | coding, and     |                           |
   |              | idle indicatior |                           |
   |--------------+-----------------+---------------------------|
   |     Bit      |      Value      |         Function          |
   |--------------+-----------------+---------------------------|
   |      0       |               0 | Not used                  |
   |--------------+-----------------+---------------------------|
   |      1       |               0 | BSC                       |
   |              |                 |                           |
   |              |               1 | HDLC                      |
   |--------------+-----------------+---------------------------|
   |      2       |               0 | Adress detection enabled  |
   |              |                 |                           |
   |              |               1 | Adress detection disabled |
   |--------------+-----------------+---------------------------|
   |      3       |               0 | NRZI coding               |
   |              |                 |                           |
   |              |               1 | NZI coding                |
   |--------------+-----------------+---------------------------|
   |      4       |               0 | Mark idle                 |
   |              |                 |                           |
   |              |               1 | Flag or sync idle         |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  BIT-MAPPED REGISTER S22                   |
   |------------------------------------------------------------|
   | Format       | AT [cmds]    |                              |
   |              | S22= n       |                              |
   |              | [cmds]       |                              |
   |--------------+--------------|                              |
   | Range:       | 0-255        |                              |
   |--------------+--------------|                              |
   | Unit:        | Bit-mapped   |                              |
   |--------------+--------------|                              |
   | Description: | Controls     |                              |
   |              | speaker      |                              |
   |              | volume and   |                              |
   |              | controls,    |                              |
   |              | limits       |                              |
   |              | results      |                              |
   |              | codes, and   |                              |
   |              | pulse dial   |                              |
   |              | make/break   |                              |
   |              | ratio.       |                              |
   |--------------+--------------+------------------------------|
   |     Bit      |    Value     |           Function           |
   |--------------+--------------+------------------------------|
   |     1, 0     |           00 | Off volume                   |
   |              |              |                              |
   |              |           01 | Low level volume             |
   |              |              |                              |
   |              |           10 | Medium level volume          |
   |              |              |                              |
   |              |           11 | High level volume            |
   |--------------+--------------+------------------------------|
   |     3, 2     |           00 | Speaker off                  |
   |              |              |                              |
   |              |           01 | Speaker off on carrier       |
   |              |              |                              |
   |              |           10 | Speaker always on            |
   |              |              |                              |
   |              |           11 | Speaker on during handshake  |
   |--------------+--------------+------------------------------|
   |    6 - 4     |          000 | Basic result codes only      |
   |              |              | enabled                      |
   |              |          100 |                              |
   |              |              | Basic and connection speed   |
   |              |          101 | result codes enabled         |
   |              |              |                              |
   |              |          110 | Basic and connection speed   |
   |              |              | result codes and dialtone    |
   |              |          111 | detection enabled            |
   |              |              |                              |
   |              |              | All result codes except      |
   |              |              | dialtone detection enabled   |
   |              |              |                              |
   |              |              | All result codes enabled     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  BIT-MAPPED REGISTER S23                   |
   |------------------------------------------------------------|
   | Format           | AT [cmds]     |                         |
   |                  | S23= n [cmds] |                         |
   |------------------+---------------|                         |
   |   | Range:       | 0-189         |                         |
   |---+--------------+---------------|                         |
   |   | Unit:        | Bit-mapped    |                         |
   |---+--------------+---------------|                         |
   |   | Description: | Grants/denies |                         |
   |   |              | remote        |                         |
   |   |              | digital       |                         |
   |   |              | loopback,     |                         |
   |   |              | controls DTE  |                         |
   |   |              | rate and      |                         |
   |   |              | parity, and   |                         |
   |   |              | sets guard    |                         |
   |   |              | tone.         |                         |
   |---+--------------+---------------+-------------------------|
   |   |     Bit      |     Value     |        Function         |
   |---+--------------+---------------+-------------------------|
   |   |      0       |             0 | Remote digital loopback |
   |   |              |               | denied                  |
   |   |              |             1 |                         |
   |   |              |               | Remote digital loopback |
   |   |              |               | allowed                 |
   |---+--------------+---------------+-------------------------|
   |   |    3 - 1     |           000 | Sets serial port speed  |
   |   |              |               | to 0-300bps             |
   |   |              |           001 |                         |
   |   |              |               | Sets serial port speed  |
   |   |              |           010 | to 600bps               |
   |   |              |               |                         |
   |   |              |           011 | Sets serial port speed  |
   |   |              |               | to 1200bps              |
   |   |              |           100 |                         |
   |   |              |               | Sets serial port speed  |
   |   |              |           101 | to 2400bps              |
   |   |              |               |                         |
   |   |              |           110 | Sets serial port speed  |
   |   |              |               | to 4800bps              |
   |   |              |           111 |                         |
   |   |              |               | Sets serial port speed  |
   |   |              |               | to 9600bps              |
   |   |              |               |                         |
   |   |              |               | Sets serial port speed  |
   |   |              |               | to 19.2Kbps             |
   |   |              |               |                         |
   |   |              |               | Sets serial port speed  |
   |   |              |               | to 38.4Kbps or higher   |
   |---+--------------+---------------+-------------------------|
   |   |     5, 4     |            00 | Parity even             |
   |   |              |               |                         |
   |   |              |            01 | Space Parity            |
   |   |              |               |                         |
   |   |              |            10 | Parity odd              |
   |   |              |               |                         |
   |   |              |            11 | Mark or No Parity       |
   |---+--------------+---------------+-------------------------|
   |   |     7, 6     |            00 | Guard tone disabled     |
   |   |              |               |                         |
   |   |              |            01 | Guard tone 550Hz        |
   |   |              |               | enabled                 |
   |   |              |            10 |                         |
   |   |              |               | Guard tone 1800Hz       |
   |   |              |               | enabled                 |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  BIT-MAPPED REGISTER S27                   |
   |------------------------------------------------------------|
   | Format       | AT [cmds] S27= n [cmds]        |            |
   |--------------+--------------------------------|            |
   | Range:       | 0-111                          |            |
   |--------------+--------------------------------|            |
   | Unit:        | Bit-mapped                     |            |
   |--------------+--------------------------------|            |
   | Description: | Selects                        |            |
   |              | synchronous/asynchronous mode, |            |
   |              | line type, clock source, and   |            |
   |              | ITU-T/Bell modes.              |            |
   |--------------+--------------------------------+------------|
   |     Bit      |             Value              |  Function  |
   |--------------+--------------------------------+------------|
   |      6       |                              0 | ITU/T mode |
   |              |                                |            |
   |              |                              1 | Bell mode  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  BIT-MAPPED REGISTER S40                   |
   |------------------------------------------------------------|
   | Format       | AT [cmds]     |                             |
   |              | S40= n [cmds] |                             |
   |--------------+---------------|                             |
   | Range:       | 0-255         |                             |
   |--------------+---------------|                             |
   | Unit:        | Bit-mapped    |                             |
   |--------------+---------------|                             |
   | Description: | Controls      |                             |
   |              | power level   |                             |
   |              | and break     |                             |
   |              | handling;     |                             |
   |              | selects MNP   |                             |
   |              | extended      |                             |
   |              | services,     |                             |
   |              | link          |                             |
   |              | negotiation,  |                             |
   |              | and block     |                             |
   |              | size.         |                             |
   |--------------+---------------+-----------------------------|
   |     Bit      |     Value     |          Function           |
   |--------------+---------------+-----------------------------|
   |     0, 1     |            00 | MNP Extended Services       |
   |              |               | disabled                    |
   |              |            01 |                             |
   |              |               | MNP Extended Services       |
   |              |            11 | enabled                     |
   |              |               |                             |
   |              |               | MNP extended services       |
   |              |               | enabled without indicating  |
   |              |               | MNP on the answer detection |
   |              |               | phase.                      |
   |--------------+---------------+-----------------------------|
   |      2       |             0 | Power level adjustment      |
   |              |               | enabled                     |
   |              |             1 |                             |
   |              |               | Power level adjustment      |
   |              |               | disabled                    |
   |--------------+---------------+-----------------------------|
   |     5, 3     |           000 | AT\K0                       |
   |              |               |                             |
   |              |           001 | AT\K1                       |
   |              |               |                             |
   |              |           010 | AT\K2                       |
   |              |               |                             |
   |              |           011 | AT\K3                       |
   |              |               |                             |
   |              |           100 | AT\K4                       |
   |              |               |                             |
   |              |           101 | AT\K5                       |
   |--------------+---------------+-----------------------------|
   |     7, 6     |            00 | MNP block size is 64        |
   |              |               | characters                  |
   |              |            01 |                             |
   |              |               | MNP block size is 128       |
   |              |            10 | characters                  |
   |              |               |                             |
   |              |            11 | MNP block size is 192       |
   |              |               | characters                  |
   |              |               |                             |
   |              |               | MNP block size is 256       |
   |              |               | characters                  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  BIT-MAPPED REGISTER S41                   |
   |------------------------------------------------------------|
   | Format       | AT [cmds] S41= |                            |
   |              | n [cmds]       |                            |
   |--------------+----------------|                            |
   | Range:       | 0-31           |                            |
   |--------------+----------------|                            |
   | Unit:        | Bit-mapped     |                            |
   |--------------+----------------|                            |
   | Description: | Selects        |                            |
   |              | compression,   |                            |
   |              | auto-retrain,  |                            |
   |              | flow control,  |                            |
   |              | and MNP mode.  |                            |
   |--------------+----------------+----------------------------|
   |     Bit      |     Value      |          Function          |
   |--------------+----------------+----------------------------|
   |    1 - 0     |             00 | Data compression disabled  |
   |              |                |                            |
   |              |             01 | MNP5 enabled               |
   |              |                |                            |
   |              |             10 | V.42bis enabled            |
   |              |                |                            |
   |              |             11 | MNP5 and V.42bis enabled   |
   |--------------+----------------+----------------------------|
   |      2       |             00 | Auto-retrain disabled      |
   |              |                |                            |
   |              |             01 | Auto-retrain enabled       |
   |              |                |                            |
   |              |             10 | Auto-fallback/fall-forward |
   |              |                | enabled                    |
   |--------------+----------------+----------------------------|
   |      3       |              0 | Flow control disabled      |
   |              |                |                            |
   |              |              1 | Flow control enabled       |
   |--------------+----------------+----------------------------|
   |      4       |              0 | Stream mode for MNP        |
   |              |                |                            |
   |              |              1 | Block mode for MNP         |
   |--------------+----------------+----------------------------|
   |     6, 5     |              0 | Not used                   |
   |--------------+----------------+----------------------------|
   |      7       |              0 | Fallback to V.22/V.22bis   |
   |              |                | disabled                   |
   |              |              1 |                            |
   |              |                | Fallback to V.22/V.22bis   |
   |              |                | enabled                    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  BIT-MAPPED REGISTER S201                  |
   |------------------------------------------------------------|
   | Format       | AT [cmds]    |                              |
   |              | S41= n       |                              |
   |              | [cmds]       |                              |
   |--------------+--------------|                              |
   | Range:       | Unidentified |                              |
   |--------------+--------------|                              |
   | Unit:        | Bit-mapped   |                              |
   |--------------+--------------|                              |
   | Description: | Controls     |                              |
   |              | cellular     |                              |
   |              | transmit     |                              |
   |              | level        |                              |
   |--------------+--------------+------------------------------|
   |     Bit      |    Value     |           Function           |
   |--------------+--------------+------------------------------|
   |    4 - 0     |           00 | Initial cellular power lever |
   |              |              | setting disabled             |
   |              |           01 |                              |
   |              |              | Initial cellular power lever |
   |              |              | setting enabled              |
   |--------------+--------------+------------------------------|
   |      5       |           00 | Compromise equalizer         |
   |              |              | disabled                     |
   |              |           01 |                              |
   |              |              | Compromise equalizer enabled |
   |--------------+--------------+------------------------------|
   |     6, 7     |            0 | Not used                     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                       BREAK OPTIONS                        |
   |------------------------------------------------------------|
   | Type:        | Register                                    |
   |--------------+---------------------------------------------|
   | Format       | AT [cmds] S82= n [cmds]                     |
   |--------------+---------------------------------------------|
   | Description: | For compatibility purposes only. Performs   |
   |              | no function                                 |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  CONNECTION FAILURE CODES                  |
   |------------------------------------------------------------|
   | Type:        | Register                                    |
   |--------------+---------------------------------------------|
   | Format       | AT [cmds] S86? [cmds]                       |
   |--------------+---------------------------------------------|
   | Description: | Reports codes which correspond to the       |
   |              | possible causes of a connection failure     |
   |--------------+---------------------------------------------|
   |    Value     |                   Meaning                   |
   |--------------+---------------------------------------------|
   |      0       | Normal hang up                              |
   |--------------+---------------------------------------------|
   |      4       | Carrier signal lost                         |
   |--------------+---------------------------------------------|
   |      5       | No error-control detected for remote modem  |
   |              | during feature negotiation                  |
   |--------------+---------------------------------------------|
   |      9       | No common protocol found                    |
   |--------------+---------------------------------------------|
   |      12      | No failure - remote modem disconnected      |
   |              | normally                                    |
   |--------------+---------------------------------------------|
   |      13      | Remote modem failed to respond after 10     |
   |              | re-transmissions same message               |
   |--------------+---------------------------------------------|
   |      14      | Violation of negotiated protocol caused     |
   |              | failure                                     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                       DCE LINE SPEED                       |
   |------------------------------------------------------------|
   | Type:        | Register                                    |
   |--------------+---------------------------------------------|
   | Format       | AT [cmds] S37= n [cmds]                     |
   |--------------+---------------------------------------------|
   | Description: | Sets the maximum allowable data exchange    |
   |              | rate attempted during handshake process.    |
   |--------------+---------------------------------------------|
   |   Command    |                  Function                   |
   |--------------+---------------------------------------------|
   |    S37=0     | Speed of last connection                    |
   |--------------+---------------------------------------------|
   |    S37=1     | 300bps                                      |
   |--------------+---------------------------------------------|
   |    S37=2     | 300bps                                      |
   |--------------+---------------------------------------------|
   |    S37=3     | 300bps                                      |
   |--------------+---------------------------------------------|
   |    S37=5     | V.22 at 1200bps                             |
   |--------------+---------------------------------------------|
   |    S37=6     | V.22bis at 2400bps                          |
   |--------------+---------------------------------------------|
   |    S37=7     | V.23                                        |
   |--------------+---------------------------------------------|
   |    S37=8     | V.32 or V.32bis at 4800bps                  |
   |--------------+---------------------------------------------|
   |    S37=9     | V.32 or V.32bis at 9600bps                  |
   |--------------+---------------------------------------------|
   |    S37=10    | V.32bis at 12.0Kbps                         |
   |--------------+---------------------------------------------|
   |    S37=11    | V.32bis at 14.4Kbps                         |
   |--------------+---------------------------------------------|
   |    S37=12    | V.32bis at 7200bps                          |
   |--------------+---------------------------------------------|
   |    S37=15    | VFC at 14.4Kbps                             |
   |--------------+---------------------------------------------|
   |    S37=16    | VFC at 16.8Kbps                             |
   |--------------+---------------------------------------------|
   |    S37=17    | VFC at 19.2Kbps                             |
   |--------------+---------------------------------------------|
   |    S37=18    | VFC at 21.6Kbps                             |
   |--------------+---------------------------------------------|
   |    S37=19    | VFC at 24.0Kbps                             |
   |--------------+---------------------------------------------|
   |    S37=20    | VFC at 24.6Kbps                             |
   |--------------+---------------------------------------------|
   |    S37=21    | VFC at 28.8Kbps                             |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                ERROR CORRECTION/COMPRESSION                |
   |------------------------------------------------------------|
   | Type:        | Register                                    |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] S46= n [cmds]                     |
   |--------------+---------------------------------------------|
   | Description: | Selects active error correction and         |
   |              | compression protocols                       |
   |--------------+---------------------------------------------|
   |   Command    |                  Function                   |
   |--------------+---------------------------------------------|
   |   S46=136    | LAP-M only, no compression                  |
   |--------------+---------------------------------------------|
   |   S46=138    | LAP-M with V.42bis data compression         |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                ERROR CORRECTION NEGOTIATION                |
   |------------------------------------------------------------|
   | Type:        | Register                                    |
   |--------------+---------------------------------------------|
   | Format       | AT [cmds] S36= n [cmds]                     |
   |--------------+---------------------------------------------|
   | Description: | Selects the action of the modem if it fails |
   |              | to connect with the error-correction        |
   |              | protocol set in &Q.                         |
   |--------------+---------------------------------------------|
   |   Command    |                  Function                   |
   |--------------+---------------------------------------------|
   |    S36=0     | Hang up                                     |
   |--------------+---------------------------------------------|
   |    S36=1     | Attempt a direct connection                 |
   |--------------+---------------------------------------------|
   |    S36=3     | Attempt a buffered connection               |
   |--------------+---------------------------------------------|
   |    S36=4     | Attempt a connection at MNP2-4; if that     |
   |              | fails, hang up.                             |
   |--------------+---------------------------------------------|
   |    S36=5     | Attempt a connection at MNP2-4; if that     |
   |              | fails, attempt a direct connection.         |
   |--------------+---------------------------------------------|
   |    S36=7     | Attempt a connection at MNP2-4; if that     |
   |              | fails, attempt a buffered connection.       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                FEATURE NEGOTIATION OPTIONS                 |
   |------------------------------------------------------------|
   | Type:        | Register                                    |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] S48= n [cmds]                     |
   |--------------+---------------------------------------------|
   | Description: | Selects active error correction and         |
   |              | compression protocols                       |
   |--------------+---------------------------------------------|
   |   Command    |                  Function                   |
   |--------------+---------------------------------------------|
   |    S48=0     | Detection negotiation disabled, XID         |
   |              | negotiation disabled                        |
   |--------------+---------------------------------------------|
   |    S48=7     | Detection negotiation and XID negotiation   |
   |              | enabled                                     |
   |--------------+---------------------------------------------|
   |   S48=128    | Fall-back to options set in S36             |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                        FLOW CONTROL                        |
   |------------------------------------------------------------|
   | Type:        | Register                                    |
   |--------------+---------------------------------------------|
   | Format       | AT [cmds] S39? [cmds]                       |
   |--------------+---------------------------------------------|
   | Description: | Displays the current flow control           |
   |--------------+---------------------------------------------|
   |    Value     |                   Meaning                   |
   |--------------+---------------------------------------------|
   |      0       | Flow control disabled                       |
   |--------------+---------------------------------------------|
   |      3       | RTS/CTS flow control enabled                |
   |--------------+---------------------------------------------|
   |      4       | XON/XOFF flow control enabled               |
   |--------------+---------------------------------------------|
   |      5       | Transparent XON/XOFF flow control enabled   |
   |--------------+---------------------------------------------|
   |      6       | Both RTS/CTS & XON/XOFF flow control        |
   |              | enabled                                     |
   +------------------------------------------------------------+