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       # CARDINAL TECHNOLOGIES, INC.
       
          MVP34ISP
       
          Card Type              Modem/Fax card                          
          Chip Set               Unidentified                            
          I/O Options            Line in, line out, microphone jack,     
                                 speaker jack                            
          Maximum Modem Rate     33.6Kbps                                
          Maximum Fax Rate       14.4Kbps                                
          Data Modulation        Bell 103/212A                           
          Protocol                                                       
                                 ITU-T V34, V.32bis, V.32, V.22bis,      
                                 V.22, V.21                              
          Fax Modulation         ITU-T V.17, V.27ter, V.29, V.21         
          Protocol               
          Error                  MNP5, V.42, V.42bis                     
          Correction/Compression 
          Fax Class              Class I                                 
          Data Bus               16-bit ISA                              
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |      Function      | Label  |    Function    |    Label    |
          |------------------------------------------------------------|
          | RJ-11 line in           |   CN1   | Microphone jack | CN3  |
          |-------------------------+---------+-----------------+------|
          | RJ-11 line out          |   CN2   | Speaker jack    | CN4  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    SERIAL PORT ADDRESS                     |
          |------------------------------------------------------------|
          |     Setting      |JP1/A |JP1/B |JP1/C |JP1/D |JP1/E |JP1/F |
          |------------------+------+------+------+------+------+------|
          |   COM1 (3F8h)    |Closed| Open | Open | Open | Open | Open |
          |------------------+------+------+------+------+------+------|
          |   COM2 (2F8h)    | Open |Closed| Open | Open | Open | Open |
          |------------------+------+------+------+------+------+------|
          |   COM3 (3E8h)    | Open | Open |Closed| Open | Open | Open |
          |------------------+------+------+------+------+------+------|
          |   COM4 (2E8h)    | Open | Open | Open |Closed| Open | Open |
          |------------------+------+------+------+------+------+------|
          |  í Plug & Play   | Open | Open | Open | Open |Closed|Closed|
          |     enabled      |      |      |      |      |      |      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                         INTERRUPT                          |
          |------------------------------------------------------------|
          |     Setting      |JP2/A |JP2/B |JP2/C |JP2/D |JP2/E |JP2/F |
          |------------------+------+------+------+------+------+------|
          |       IRQ3       | Open | Open | Open | Open | Open |Closed|
          |------------------+------+------+------+------+------+------|
          |       IRQ4       | Open | Open | Open | Open |Closed| Open |
          |------------------+------+------+------+------+------+------|
          |       IRQ5       | Open | Open | Open |Closed| Open | Open |
          |------------------+------+------+------+------+------+------|
          |       IRQ7       | Open | Open |Closed| Open | Open | Open |
          |------------------+------+------+------+------+------+------|
          |      IRQ10       | Open |Closed| Open | Open | Open | Open |
          |------------------+------+------+------+------+------+------|
          |      IRQ11       |Closed| Open | Open | Open | Open | Open |
          |------------------+------+------+------+------+------+------|
          |  í Plug & Play   | Open | Open | Open | Open | Open | Open |
          |     enabled      |      |      |      |      |      |      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   SUPPORTED COMMAND SET                    |
          |------------------------------------------------------------|
          |                     Basic AT Commands                      |
          |------------------------------------------------------------|
          | AT, +++, A/                                                |
          |------------------------------------------------------------|
          | A, B, E, H, M, O, P, Q, T, V, W, Y, Z                      |
          |------------------------------------------------------------|
          | &C, &G, &P, &S, &T, &V, &W, &Y, &Z                         |
          |------------------------------------------------------------|
          |                    Extended AT Commands                    |
          |------------------------------------------------------------|
          | \A, \B, \G, \K, \N,                                        |
          |------------------------------------------------------------|
          | %C, %E, %L, %Q                                             |
          |------------------------------------------------------------|
          | +MS                                                        |
          |------------------------------------------------------------|
          | #CID                                                       |
          |------------------------------------------------------------|
          |                        S Registers                         |
          |------------------------------------------------------------|
          | S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12,     |
          | S14, S16, S18, S21, S22,                                   |
          |------------------------------------------------------------|
          | S23, S24, S25, S26, S27, S29, S30, S31, S32, S33, S38,     |
          | S39, S40, S41, S95                                         |
          |------------------------------------------------------------|
          |                                                            |
          |------------------------------------------------------------|
          | Note: See MHI Help File for full command documentation.    |
          +------------------------------------------------------------+
       
                            PROPRIETARY AT COMMAND SET
       
          +------------------------------------------------------------+
          |                    AUTO-MODE DETECTION                     |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] Nn [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.                                   |
          |--------------+---------------------------------------------|
          |     í N1     | Auto-mode detection enabled                 |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 DATA TERMINAL READY (DTR)                  |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &Dn [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Selects modem response to DTR               |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     &D0      | DTR override                                |
          |--------------+---------------------------------------------|
          |     &D1      | DTR toggle causes online command mode       |
          |--------------+---------------------------------------------|
          |    í &D2     | Normal DTR operations                       |
          |--------------+---------------------------------------------|
          |     &D3      | Resets on receipt of DTR                    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                            DIAL                            |
          |------------------------------------------------------------|
          | Type:        | Immediate                                   |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] D<#> [cmds]                       |
          |--------------+---------------------------------------------|
          | Description: | Dials telephone number according to any     |
          |              | modifiers included in the string            |
          |--------------+---------------------------------------------|
          | Note:        | Any combination of modifiers can be used to |
          |              | produce the desired dial functions in       |
          |              | sequence.                                   |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |      DL      | Re-dial last number                         |
          |--------------+---------------------------------------------|
          |      DP      | Pulse dialing enabled                       |
          |--------------+---------------------------------------------|
          |     DS=n     | Dial stored telephone number n              |
          |--------------+---------------------------------------------|
          |      DT      | Tone dialing enabled/Pulse dialing disabled |
          |--------------+---------------------------------------------|
          |      DW      | Dialing resumed following dial tone         |
          |              | detection                                   |
          |--------------+---------------------------------------------|
          |      D,      | Dialing paused for amount of time specified |
          |              | in S8 register                              |
          |--------------+---------------------------------------------|
          |    D"WXY"    | Optional method of denoting telephone       |
          |              | numbers. Letters enclosed in quotes are     |
          |              | interpreted as numbers according to the     |
          |              | system found on a telephone keypad.         |
          |--------------+---------------------------------------------|
          |      D*      | The star digit (touch tone only)            |
          |--------------+---------------------------------------------|
          |      D#      | The gate digit (touch tone only)            |
          |--------------+---------------------------------------------|
          |      D!      | Flash function initiated. Modem commanded   |
          |              | to go off-hook for specified time before    |
          |              | returning on-hook.                          |
          |--------------+---------------------------------------------|
          |      D@      | Wait for Quite Answer function enabled.     |
          |              | Modem waits until a "quiet answer," a       |
          |              | ring-back signal followed by silence up to  |
          |              | the time specified in S7, is received prior |
          |              | to executing the rest of the dial string.   |
          |--------------+---------------------------------------------|
          |      D/      | Delays 125 ms. Before proceeding with dial  |
          |              | string                                      |
          |--------------+---------------------------------------------|
          |      D^      | Calling tone enable/disable for current     |
          |              | call only                                   |
          |--------------+---------------------------------------------|
          |      D;      | Modem returned to idle state after dialing. |
          |              | The semicolon can only be placed at the end |
          |              | of the dial command.                        |
          |--------------+---------------------------------------------|
          |      D&      | Waiting for AT&T "bong" tone                |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                        FLOW CONTROL                        |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &Kn [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Enables/disables flow control               |
          |--------------+---------------------------------------------|
          |   Command    |                  Line Type                  |
          |--------------+---------------------------------------------|
          |     &K0      | Flow control disabled                       |
          |--------------+---------------------------------------------|
          |    í &K3     | Hardware, RTS/CTS flow control enabled      |
          |--------------+---------------------------------------------|
          |     &K4      | Software, XON/XOFF flow control enabled     |
          |--------------+---------------------------------------------|
          |     &K5      | Transparent software, XON/XOFF flow control |
          |              | enabled                                     |
          |--------------+---------------------------------------------|
          |     &K6      | Software & hardware flow control enabled    |
          |------------------------------------------------------------|
          | Note: Default setting for fax operations is &K6            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     REPORT INFORMATION                     |
          |------------------------------------------------------------|
          | Type:        | Immediate                                   |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] In [cmds]                         |
          |--------------+---------------------------------------------|
          | Description: | Displays information requested              |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |      I0      | Reports four digit product code             |
          |--------------+---------------------------------------------|
          |      I1      | Reports firmware checksum                   |
          |--------------+---------------------------------------------|
          |      I2      | Verify checksum                             |
          |--------------+---------------------------------------------|
          |      I3      | Reports firmware revision                   |
          |--------------+---------------------------------------------|
          |      I4      | Reports identifier string                   |
          |--------------+---------------------------------------------|
          |      I5      | Reports country code                        |
          |--------------+---------------------------------------------|
          |      I6      | Reports data pump modem and revision        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |             SELECT CALL PROGRESS RESULT CODES              |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] Xn [cmds]                         |
          |--------------+---------------------------------------------|
          | Description: | Enables selection of tone detection and     |
          |              | associated result code format options       |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |      X0      | Busy and dial tone detection disabled;      |
          |              | extended result codes diabled.              |
          |--------------+---------------------------------------------|
          |      X1      | Busy and dial tone detection disabled;      |
          |              | extended result codes enabled.              |
          |--------------+---------------------------------------------|
          |      X2      | Busy tone detection disabled, dial tone     |
          |              | detection enabled; extended result codes    |
          |              | enabled.                                    |
          |--------------+---------------------------------------------|
          |      X3      | Busy tone detection enabled, dial tone      |
          |              | detection disabled; extended result codes   |
          |              | enabled.                                    |
          |--------------+---------------------------------------------|
          |      X4      | Busy and dial tone detection enabled;       |
          |              | extended result codes enabled.              |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                       SPEAKER VOLUME                       |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] Ln [cmds]                         |
          |--------------+---------------------------------------------|
          | Description: | Controls speaker volume                     |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |      L0      | Low volume setting                          |
          |--------------+---------------------------------------------|
          |     í L1     | Low volume setting                          |
          |--------------+---------------------------------------------|
          |      L2      | Medium volume setting                       |
          |--------------+---------------------------------------------|
          |      L3      | Highest volume setting                      |
          +------------------------------------------------------------+
       
                               AT VOICE COMMAND SET
       
          +------------------------------------------------------------+
          |                      AUDIO MODULATION                      |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] -SQS=x,y [cmds]                   |
          |--------------+---------------------------------------------|
          | Description: | Selects data speed with audio modulation;   |
          |              | enable/disable automode                     |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |    í x=0     | V.61 modulation enabled (4800bps)           |
          |--------------+---------------------------------------------|
          |     x=1      | V61+ modulation enabled (4800bps - 9600bps) |
          |--------------+---------------------------------------------|
          |     x=2      | V34Q modulation enabled (4800bps -          |
          |              | 14.4Kbps)                                   |
          |--------------+---------------------------------------------|
          |     y=0      | Automode disabled                           |
          |--------------+---------------------------------------------|
          |    í y=1     | Automode enabled                            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                       AUDIOSPAN MODE                       |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] -SMS=x,y,z [cmds]                 |
          |--------------+---------------------------------------------|
          | Description: | Selects audiospan modem; selects voice and  |
          |              | data speed                                  |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |    í x=0     | Audiospan disabled/data only                |
          |--------------+---------------------------------------------|
          |     x=1      | Reserved                                    |
          |--------------+---------------------------------------------|
          |     x=2      | Audiospan enabled                           |
          |--------------+---------------------------------------------|
          |    y=4800    | Minimum voice+data speed set to 4800bps     |
          |--------------+---------------------------------------------|
          |    y=7200    | Minimum voice+data speed set to 7200bps     |
          |--------------+---------------------------------------------|
          |    y=9600    | Minimum voice+data speed set to 9600bps     |
          |--------------+---------------------------------------------|
          |   y=12000    | Minimum voice+data speed set to 12.0Kbps    |
          |--------------+---------------------------------------------|
          |   y=14400    | Minimum voice+data speed set to 14.4Kbps    |
          |--------------+---------------------------------------------|
          |    z=4800    | Maximum voice+data speed set to 4800bps     |
          |--------------+---------------------------------------------|
          |    z=7200    | Maximum voice+data speed set to 7200bps     |
          |--------------+---------------------------------------------|
          |    z=9600    | Maximum voice+data speed set to 9600bps     |
          |--------------+---------------------------------------------|
          |   z=12000    | Maximum voice+data speed set to 12.0Kbps    |
          |--------------+---------------------------------------------|
          |   z=14400    | Maximum voice+data speed set to 14.4Kbps    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                         DATA BURST                         |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] -SMCn [cmds]                      |
          |--------------+---------------------------------------------|
          | Description: | Data burst enable/disable.                  |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     SMC0     | Data burst disabled; audio channel open at  |
          |              | all times during connection                 |
          |--------------+---------------------------------------------|
          |    í SMC1    | Data burst enabled; audio channel open only |
          |              | when data is detected on network            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                      DISTINCTIVE RING                      |
          |------------------------------------------------------------|
          | Format:         | AT [cmds] -SDR=n [cmds]                  |
          |-----------------+------------------------------------------|
          | Default:        | Unidentified                             |
          |-----------------+------------------------------------------|
          | Range:          | 0 - 255                                  |
          |-----------------+------------------------------------------|
          | Description:    | Selects which distinctive ring signals   |
          |                 | the modem will respond to.               |
          |------------------------------------------------------------|
          |    Bit    | Value |                Function                |
          |-----------+-------+----------------------------------------|
          |     0     |     0 | Distinctive ring disabled              |
          |-----------+-------+----------------------------------------|
          |     1     |     0 | Distinctive ring type 1 disabled.      |
          |           |       |                                        |
          |           |     1 | Distinctive ring type 1enabled.        |
          |-----------+-------+----------------------------------------|
          |     2     |     0 | Distinctive ring type 2disabled        |
          |           |       |                                        |
          |           |     1 | Distinctive ring type 2 enabled.       |
          |-----------+-------+----------------------------------------|
          |     3     |     0 | Distinctive ring types 1 & 2 disabled. |
          |           |       |                                        |
          |           |     1 | Distinctive ring types 1 & 2 enabled.  |
          |-----------+-------+----------------------------------------|
          |     4     |     0 | Distinctive ring type 3 disabled.      |
          |           |       |                                        |
          |           |     1 | Distinctive ring type 3 enabled.       |
          |-----------+-------+----------------------------------------|
          |     5     |     0 | Distinctive ring types 1 & 3 disabled. |
          |           |       |                                        |
          |           |     1 | Distinctive ring types 1 & 3 enabled.  |
          |-----------+-------+----------------------------------------|
          |     6     |     0 | Distinctive ring types 2 & 3 disabled. |
          |           |       |                                        |
          |           |     1 | Distinctive ring types 2 & 3 enabled.  |
          |-----------+-------+----------------------------------------|
          |     7     |     0 | Distinctive ring types 1, 2 & 3        |
          |           |       | disabled.                              |
          |           |     1 |                                        |
          |           |       | Distinctive ring types 1, 2 & 3        |
          |           |       | enabled.                               |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                          MNP10EC                           |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] -SECn, [<tx level>] [cmds]        |
          |--------------+---------------------------------------------|
          | Range (tx    | 0-30dBm                                     |
          | level)       |                                             |
          |--------------+---------------------------------------------|
          | Description: | Enable/disable MNP10EC                      |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |   í -SEC0    | MNP10EC disabled                            |
          |--------------+---------------------------------------------|
          |  -SEC1 [<tx  | MNP10EC enabled. The transmission level     |
          |   level>]    | will be defined by <tx level>               |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                        VOICE DEVICE                        |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] #VLS=n [cmds]                     |
          |--------------+---------------------------------------------|
          | Description: | Selects the I/O device for the DSP chip.    |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |   í #VLS=0   | Telephone line and handset used for voice   |
          |              | I/O.                                        |
          |--------------+---------------------------------------------|
          |    #VLS=1    | Speakerphone used for voice I/O.            |
          +------------------------------------------------------------+
       
                               S(STATUS) -REGISTERS
       
          +------------------------------------------------------------+
          |                  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                   |
          |--------------+---------------------------------------------|
          |      00      | Normal hang up                              |
          |--------------+---------------------------------------------|
          |      04      | Carrier signal lost                         |
          |--------------+---------------------------------------------|
          |      05      | V.42 negotiation failed to detect an EC     |
          |              | modem                                       |
          |--------------+---------------------------------------------|
          |      09      | 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     | Reserved                                    |
          |--------------+---------------------------------------------|
          |    S37=2     | Reserved                                    |
          |--------------+---------------------------------------------|
          |    S37=3     | 300bps                                      |
          |--------------+---------------------------------------------|
          |    S37=4     | Reserved                                    |
          |--------------+---------------------------------------------|
          |    S37=5     | 1200bps, V.22                               |
          |--------------+---------------------------------------------|
          |    S37=6     | 2400bps, V.22bis                            |
          |--------------+---------------------------------------------|
          |    S37=7     | 1200/75bps, V.23                            |
          |--------------+---------------------------------------------|
          |    S37=8     | 4800bps, V.32bis/V.32                       |
          |--------------+---------------------------------------------|
          |    S37=9     | 9600bps, V.32bis/V.32                       |
          |--------------+---------------------------------------------|
          |    S37=10    | 12.0Kbps, V.32bis                           |
          |--------------+---------------------------------------------|
          |    S37=11    | 14.4Kbps, V.32bis                           |
          |--------------+---------------------------------------------|
          |    S37=12    | 7200bps, V.32bis                            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                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=6     | Reserved                                    |
          |--------------+---------------------------------------------|
          |    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     | Fall-back to options set in S36            |
          +------------------------------------------------------------+