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# ECHO COMMUNICATIONS
I336PF
Card Type Modem (asynchronous)
Chipset U.S. Robotics
Maximum Data Rate 33.6Kbps
Maximum Fax Rate 14.4Kbps
Data Modulation Bell 103A/212A
ITU-T V.21, V.22, V.22bis, V.23, V.32,
V.32bis, V.34
Rockwell V.FC
Fax Modulation ITU-T V.17, V21CH2, V.27ter, V.29
Error MNP5, V.42, V.42bis
Correction/Compression
Fax Class Class I & II
Data Bus 8-bit ISA
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|----------------------+-------+---------------------+-------|
| Telephone line | CN1 | Telephone line | CN2 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SUPPORTED STANDARD COMMANDS |
|------------------------------------------------------------|
| Basic AT Commands |
|------------------------------------------------------------|
| +++, ‘comma’, A/ |
|------------------------------------------------------------|
| A, B, C, D, E, F, H, L, M, O, P, Q, T, V, X |
|------------------------------------------------------------|
| &C, &D, &G, &P, &R, &S, &T, &W |
|------------------------------------------------------------|
| S-Registers |
|------------------------------------------------------------|
| S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, |
| S18, S25, S38 |
|------------------------------------------------------------|
| Note: See MHI help file for complete information. |
+------------------------------------------------------------+
Proprietary AT Command Set
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S13 |
|------------------------------------------------------------|
| Format | AT [cmds] S13=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0 - 217 |
|--------------+---------------------------------------------|
| Description: | Controls DTR reset, DTR dialing, reset |
| | dialing, and MNP3. |
|--------------+---------------------------------------------|
| Bit | Value | Function |
|------+-------+---------------------------------------------|
| 0 | í 0 | DTR normal. |
| | | |
| | 1 | Reset on low DTR. |
|------+-------+---------------------------------------------|
| 2, 1 | 00 | Not used. |
|------+-------+---------------------------------------------|
| 3 | í 0 | DTR dialing disabled. |
| | | |
| | 1 | DTR dialing enabled. |
|------+-------+---------------------------------------------|
| 4 | í 0 | Reset dialing disabled. |
| | | |
| | 1 | Reset dialing enabled. |
|------+-------+---------------------------------------------|
| 5 | 0 | Not used. |
|------+-------+---------------------------------------------|
| 6 | í 0 | MNP 3 enabled. |
| | | |
| | 1 | MNP 3 disabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S15 |
|------------------------------------------------------------|
| Format: | AT [cmds] S15=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0 - 56 |
|--------------+---------------------------------------------|
| Description: | Controls non-error-correcting mode buffer, |
| | MNP4, and BS/DEL switch. |
|--------------+---------------------------------------------|
| Bit | Value | Function |
|------+-------+---------------------------------------------|
| 2 - | 000 | Not used. |
| 0 | | |
|------+-------+---------------------------------------------|
| 3 | í 0 | Non-error-correcting mode transmit buffer |
| | | set to 1.5KB. |
| | 1 | |
| | | Non-error-correcting mode transmit buffer |
| | | set to 128 bytes. |
|------+-------+---------------------------------------------|
| 4 | í 0 | MNP 4 enabled. |
| | | |
| | 1 | MNP 4 disabled. |
|------+-------+---------------------------------------------|
| 5 | í 0 | Backspace and delete keys normal. |
| | | |
| | 1 | Backspace and delete keys reversed. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S27 |
|------------------------------------------------------------|
| Format: | AT [cmds] S27=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0 - 191 |
|--------------+---------------------------------------------|
| Description: | Controls V.21, V.32 encoding and |
| | modulation, V.42 answer tone and handshake, |
| | and 9600 result codes. |
|--------------+---------------------------------------------|
| Bit | Value | Function |
|------+-------+---------------------------------------------|
| 0 | í 0 | V.21 disabled. |
| | | |
| | 1 | V.21 enabled. |
|------+-------+---------------------------------------------|
| 1 | í 0 | V.32 trellis coding enabled. |
| | | |
| | 1 | V.32 trellis coding disabled. |
|------+-------+---------------------------------------------|
| 2 | í 0 | V.32 modulation enabled. |
| | | |
| | 1 | V.32 modulation disabled. |
|------+-------+---------------------------------------------|
| 3 | í 0 | 2100Hz answer tone enabled. |
| | | |
| | 1 | 2100Hz answer tone disabled. |
|------+-------+---------------------------------------------|
| 5, 4 | í 00 | V.42 detect, LAPM and MNP enabled. |
| | | |
| | 01 | V.42 detect and LAPM enabled. |
| | | |
| | 10 | MNP enabled. |
| | | |
| | 11 | LAPM enabled. |
|------+-------+---------------------------------------------|
| 6 | 0 | Not used. |
|------+-------+---------------------------------------------|
| 7 | í 0 | Actual result codes displayed. |
| | | |
| | 1 | Force 9600 result codes. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BREAK LENGTH |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S21=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 10 |
|--------------+---------------------------------------------|
| Range: | 0 - 255 |
|--------------+---------------------------------------------|
| Unit: | 10 ms |
|--------------+---------------------------------------------|
| Description: | Sets the length of error control mode |
| | breaks sent from DCE to DTE. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BREAK TYPE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Yn [cmds] |
|--------------+---------------------------------------------|
| Description: | Configures action of break signal. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &Y0 | Break empties buffer and is not send to |
| | remote modem. |
|--------------+---------------------------------------------|
| í &Y1 | Break empties buffer and is sent |
| | immediately to remote modem. |
|--------------+---------------------------------------------|
| &Y2 | Break does not empty buffer and is sent |
| | immediately to remote modem. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| COMPRESSION AND ERROR CORRECTION |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S51=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0 - 7 |
|--------------+---------------------------------------------|
| Description: | Selects compression and error correction |
| | for specific modulations. |
|--------------+---------------------------------------------|
| Bit | Value | Function |
|------+-------+---------------------------------------------|
| 0 | í 0 | MNP/V.42 enabled during V.22 operation. |
| | | |
| | 1 | MNP/V.42 disabled during V.22 operation. |
|------+-------+---------------------------------------------|
| 1 | í 0 | MNP/V.42 enabled during V.22bis operation. |
| | | |
| | 1 | MNP/V.42 disabled during V.22bis operation. |
|------+-------+---------------------------------------------|
| 2 | í 0 | MNP/V.42 enabled during V.32bis operation. |
| | | |
| | 1 | MNP/V.42 disabled during V.32bis operation. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| COMPRESSION MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Kn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects the type of data compression that |
| | will be used. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &K0 | Data compression disabled. |
|--------------+---------------------------------------------|
| í &K1 | Auto-detect compression mode. |
|--------------+---------------------------------------------|
| &K2 | Data compression enabled. |
|--------------+---------------------------------------------|
| &K3 | MNP5 data compression only enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONNECTION SPEED UPPER LIMIT |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Nn [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets required connection speed if &U is set |
| | to 0; otherwise, sets fastest allowed |
| | connection speed. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í &N0 | No maximum connect speed. |
|--------------+---------------------------------------------|
| &N1 | Set maximum connect speed to 300bps. |
|--------------+---------------------------------------------|
| &N2 | Set maximum connect speed to 1200bps. |
|--------------+---------------------------------------------|
| &N3 | Set maximum connect speed to 2400bps. |
|--------------+---------------------------------------------|
| &N4 | Set maximum connect speed to 4800bps. |
|--------------+---------------------------------------------|
| &N5 | Set maximum connect speed to 7200bps. |
|--------------+---------------------------------------------|
| &N6 | Set maximum connect speed to 9600bps. |
|--------------+---------------------------------------------|
| &N7 | Set maximum connect speed to 12Kbps. |
|--------------+---------------------------------------------|
| &N8 | Set maximum connect speed to 14.4Kbps. |
|--------------+---------------------------------------------|
| &N9 | Set maximum connect speed to 16.8Kbps. |
|--------------+---------------------------------------------|
| &N10 | Set maximum connect speed to 19.2Kbps. |
|--------------+---------------------------------------------|
| &N11 | Set maximum connect speed to 21.6Kbps. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONNECTION SPEED UPPER LIMIT (CON’T) |
|------------------------------------------------------------|
| Command | Function |
|------------+-----------------------------------------------|
| &N12 | Set maximum connect speed to 24Kbps. |
|------------+-----------------------------------------------|
| &N13 | Set maximum connect speed to 26.4Kbps. |
|------------+-----------------------------------------------|
| &N14 | Set maximum connect speed to 28.8Kbps. |
|------------+-----------------------------------------------|
| &N15 | Set maximum connect speed to 31.2Kbps. |
|------------+-----------------------------------------------|
| &N16 | Set maximum connect speed to 33.6Kbps. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONNECTION SPEED LOWER LIMIT |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Un [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets slowest allowed connection speed if &N |
| | is set to 1 or higher. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í &U0 | No minimum connect speed. |
|--------------+---------------------------------------------|
| &U1 | Set minimum connect speed to 300bps. |
|--------------+---------------------------------------------|
| &U2 | Set minimum connect speed to 1200bps. |
|--------------+---------------------------------------------|
| &U3 | Set minimum connect speed to 2400bps. |
|--------------+---------------------------------------------|
| &U4 | Set minimum connect speed to 4800bps. |
|--------------+---------------------------------------------|
| &U5 | Set minimum connect speed to 7200bps. |
|--------------+---------------------------------------------|
| &U6 | Set minimum connect speed to 9600bps. |
|--------------+---------------------------------------------|
| &U7 | Set minimum connect speed to 12Kbps. |
|--------------+---------------------------------------------|
| &U8 | Set minimum connect speed to 14.4Kbps. |
|--------------+---------------------------------------------|
| &U9 | Set minimum connect speed to 16.8Kbps. |
|--------------+---------------------------------------------|
| &U10 | Set minimum connect speed to 19.2Kbps. |
|--------------+---------------------------------------------|
| &U11 | Set minimum connect speed to 21.6Kbps. |
|--------------+---------------------------------------------|
| &U12 | Set minimum connect speed to 24Kbps. |
|--------------+---------------------------------------------|
| &U13 | Set minimum connect speed to 26.4Kbps. |
|--------------+---------------------------------------------|
| &U14 | Set minimum connect speed to 28.8Kbps. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DISPLAY INFORMATION |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] In [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays modem properties. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| I0 | Displays product identification code. |
|--------------+---------------------------------------------|
| I1 | Tests and displays ROM checksum result. |
|--------------+---------------------------------------------|
| I2 | Tests and displays RAM checksum result. |
|--------------+---------------------------------------------|
| I3 | Displays product type. |
|--------------+---------------------------------------------|
| I4 | Displays current command settings. |
|--------------+---------------------------------------------|
| I5 | Displays current NVRAM settings. |
|--------------+---------------------------------------------|
| I6 | Displays current connection’s statistics. |
|--------------+---------------------------------------------|
| I7 | Displays product configuration. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DISPLAY LAST DIAL STRING |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &ZL? [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays the last executed dial string. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ERROR CORRECTION MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Mn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects active error correction protocols. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &M0 | Normal mode only. |
|--------------+---------------------------------------------|
| í &M4 | Auto-detect mode. |
|--------------+---------------------------------------------|
| &M5 | ARQ mode only. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ESCAPE SEQUENCE RESPONSE |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S14=n [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls the modem's reaction to an escape |
| | sequence. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| S14=0 | Normal operation. |
|--------------+---------------------------------------------|
| S14=1 | When +++ is received, modem disconnects and |
| | enters command state. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| EXTENDED RESULT CODES |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &An [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects extended result codes. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &A0 | Extended result codes disabled. |
|--------------+---------------------------------------------|
| &A1 | ARQ result codes enabled. |
|--------------+---------------------------------------------|
| &A2 | V.32 result code enabled. |
|--------------+---------------------------------------------|
| í &A3 | Error control and compression result codes |
| | enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FACTORY DEFAULTS |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Fn [cmds] |
|--------------+---------------------------------------------|
| Description: | Resets the modem to the specified factory |
| | profile. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &F0 | Modem resets to factory generic profile. |
|--------------+---------------------------------------------|
| &F1 | Modem resets to factory hardware flow |
| | control profile. |
|--------------+---------------------------------------------|
| &F2 | Modem resets to factory software flow |
| | control profile. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL CHARACTER - XOFF |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S23=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 19 |
|--------------+---------------------------------------------|
| Range: | 0 - 127 |
|--------------+---------------------------------------------|
| Unit: | 1 ASCII character |
|--------------+---------------------------------------------|
| Description: | Sets the character used to represent XOFF. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL CHARACTER - XON |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S22=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 17 |
|--------------+---------------------------------------------|
| Range: | 0 - 127 |
|--------------+---------------------------------------------|
| Unit: | 1 ASCII character |
|--------------+---------------------------------------------|
| Description: | Sets the character used to represent XON. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL TYPE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Hn [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets type of flow control used by modem. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &H0 | Flow control disabled. |
|--------------+---------------------------------------------|
| í &H1 | CTS/RTS flow control enabled. |
|--------------+---------------------------------------------|
| &H2 | XON/XOFF flow control enabled. |
|--------------+---------------------------------------------|
| &H3 | CTS/RTS and XON/XOFF flow control enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| HELP - AMPERSAND |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &$ |
|--------------+---------------------------------------------|
| Description: | Displays the AT& command set. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| HELP - BASIC |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] $ |
|--------------+---------------------------------------------|
| Description: | Displays the basic (no prefix) AT command |
| | set. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| HELP - DIAL |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] D$ |
|--------------+---------------------------------------------|
| Description: | Displays dialing options. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INACTIVITY TIMER |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S19=n [cmds |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0 - 255 |
|--------------+---------------------------------------------|
| Unit: | 1 minute |
|--------------+---------------------------------------------|
| Description: | Sets the length of time that the modem does |
| | not receive information before it |
| | disconnects. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LOCK SERIAL PORT |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Bn [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets operation of serial port speed. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &B0 | Serial speed follows connect speed. |
|--------------+---------------------------------------------|
| í &B1 | Serial speed locked. |
|--------------+---------------------------------------------|
| &B2 | Serial speed locked in ARQ mode only. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PROFILE ON POWER-UP |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] Yn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects the profile to restore into the |
| | active profile on power-up. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í Y0 | Restore profile 0 on power-up. |
|--------------+---------------------------------------------|
| Y1 | Restore profile 1 on power-up. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| RESET MODEM |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] Zn [cmds] |
|--------------+---------------------------------------------|
| Description: | Resets the modem to the specified profile. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| Z0 | Modem resets to profile set with the Y |
| | command. |
|--------------+---------------------------------------------|
| Z1 | Modem resets to user profile 0. |
|--------------+---------------------------------------------|
| Z2 | Modem resets to user profile 1. |
|--------------+---------------------------------------------|
| Z3 | Modem resets to factory generic profile. |
|--------------+---------------------------------------------|
| Z4 | Modem resets to factory hardware flow |
| | control profile. |
|--------------+---------------------------------------------|
| Z5 | Modem resets to factory software flow |
| | control profile. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| STORE TELEPHONE NUMBER |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Zn=<#> |
| | |
| | AT [cmds] &Zn=L |
|--------------+---------------------------------------------|
| Description: | Writes the indicated telephone number into |
| | the non-volatile memory at location n. If |
| | the second form is used, the last dial |
| | string executed will be stored. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TONE DIALING TEST |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S16=n [cmds] |
|--------------+---------------------------------------------|
| Description: | Begins a tone dialing test. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í S16=0 | Tone dialing test disabled. |
|--------------+---------------------------------------------|
| S16=2 | Tone dialing test enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.32 AND V.32bis MODULATIONS |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S34=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 6 |
|--------------+---------------------------------------------|
| Range: | 0 - 15 |
|--------------+---------------------------------------------|
| Description: | Controls V.32 and V.32bis modulations. |
|--------------+---------------------------------------------|
| Bit | Value | Function |
|------+-------+---------------------------------------------|
| 0 | í 0 | V.32bis enabled. |
| | | |
| | 1 | V.32bis disabled. |
|------+-------+---------------------------------------------|
| 2, 1 | 11 | Not used. |
|------+-------+---------------------------------------------|
| 3 | í 0 | V.32 modulation disabled. |
| | | |
| | 1 | V.32 modulation enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.32 HANDSHAKE TIME |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S28=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 8 |
|--------------+---------------------------------------------|
| Range: | 0 - 255 |
|--------------+---------------------------------------------|
| Unit: | .1 second |
|--------------+---------------------------------------------|
| Description: | Sets the length of the V.32 handshaking |
| | phase. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.34 AND V.FC OPTIONS |
|------------------------------------------------------------|
| Format: | AT [cmds] S56=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0 - 223 |
|--------------+---------------------------------------------|
| Description: | Controls non-linear coding, transmit level |
| | deviation, pre-emphasis, pre-coding, |
| | shaping, V.34, and V.FC. |
|--------------+---------------------------------------------|
| Bit | Value | Function |
|------+-------+---------------------------------------------|
| 0 | í 0 | Non-linear coding enabled. |
| | | |
| | 1 | Non-linear coding disabled. |
|------+-------+---------------------------------------------|
| 1 | í 0 | Transmit level deviation enabled. |
| | | |
| | 1 | Transmit level deviation disabled. |
|------+-------+---------------------------------------------|
| 2 | í 0 | Pre-emphasis enabled. |
| | | |
| | 1 | Pre-emphasis disabled. |
|------+-------+---------------------------------------------|
| 3 | í 0 | Pre-coding enabled. |
| | | |
| | 1 | Pre-coding disabled. |
|------+-------+---------------------------------------------|
| 4 | í 0 | Shaping enabled. |
| | | |
| | 1 | Shaping disabled. |
|------+-------+---------------------------------------------|
| 5 | 0 | Not used. |
|------+-------+---------------------------------------------|
| 6 | í 0 | V.34 enabled. |
| | | |
| | 1 | V.34 disabled. |
|------+-------+---------------------------------------------|
| 7 | í 0 | V.FC enabled. |
| | | |
| | 1 | V.FC disabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.34 MAPPING |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S55=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0 - 15 |
|--------------+---------------------------------------------|
| Description: | Controls V.34 mapping. |
|--------------+---------------------------------------------|
| Bit | Value | Function |
|------+-------+---------------------------------------------|
| 0 | í 0 | 8S-2D map enabled. |
| | | |
| | 1 | 8S-2D map disabled. |
|------+-------+---------------------------------------------|
| 1 | í 0 | 16S-4D map enabled. |
| | | |
| | 1 | 16S-4D map disabled. |
|------+-------+---------------------------------------------|
| 2 | í 0 | 32S-2D map enabled. |
| | | |
| | 1 | 32S-2D map disabled. |
|------+-------+---------------------------------------------|
| 3 | í 0 | 64S-4D map enabled. |
| | | |
| | 1 | 64S-4D map disabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.34 OPTIONS |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S54=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0 - 255 |
|--------------+---------------------------------------------|
| Description: | Controls V.34 baud rate, call indicate, and |
| | V.8. |
|--------------+---------------------------------------------|
| Bit | Value | Function |
|------+-------+---------------------------------------------|
| 0 | í 0 | 2400 baud rate enabled. |
| | | |
| | 1 | 2400 baud rate disabled. |
|------+-------+---------------------------------------------|
| 1 | í 0 | 2743 baud rate enabled. |
| | | |
| | 1 | 2743 baud rate disabled. |
|------+-------+---------------------------------------------|
| 2 | í 0 | 2800 baud rate enabled. |
| | | |
| | 1 | 2800 baud rate disabled. |
|------+-------+---------------------------------------------|
| 3 | í 0 | 3000 baud rate enabled. |
| | | |
| | 1 | 3000 baud rate disabled. |
|------+-------+---------------------------------------------|
| 4 | í 0 | 3200 baud rate enabled. |
| | | |
| | 1 | 3200 baud rate disabled. |
|------+-------+---------------------------------------------|
| 5 | í 0 | 3429 baud rate enabled. |
| | | |
| | 1 | 3429 baud rate disabled. |
|------+-------+---------------------------------------------|
| 6 | í 0 | Call indicate during V.34 operation |
| | | enabled. |
| | 1 | |
| | | Call indicate during V.34 operation |
| | | disabled. |
|------+-------+---------------------------------------------|
| 7 | í 0 | V.8 during V.34 operation enabled. |
| | | |
| | 1 | V.8 during V.34 operation disabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| XON/XOFF PASS-THROUGH |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &In [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects whether XON/XOFF signals received |
| | from the DTE are sent to the remote modem. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í &I0 | Software flow control disabled. |
|--------------+---------------------------------------------|
| &I1 | XON/XOFF passed through local modem. |
|--------------+---------------------------------------------|
| &I2 | XON/XOFF signals trapped by local modem. |
+------------------------------------------------------------+