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# CARDINAL TECHNOLOGIES, INC.
CONNECTA 33.6K INTERNAL FAX MODEM (2420)
Card Type Modem (synchronous/asynchronous)
Chip Set TI
Maximum Modem Rate 33.6Kbps
Maximum Fax Rate 14.4Kbps
Data Modulation Bell 103A/212A, ITU-T V.21, V.22,
Protocol V.22bis, V.23, V.32, V.32bis, V.34,
Fax Modulation ITU-T V.17, V.21CH2, V.27ter, V.29
Protocol
Error MNP5, V.42, V.42bis
Correction/Compression
Fax Class Class I
Data Bus 8-bit ISA
Card Size Half-length, half-height card
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|------------------------------------------------------------|
| Line in | CN1 | Line out | CN2 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PLUG & PLAY SELECTION |
|------------------------------------------------------------|
| Setting | JP1 | JP2 | JP3 | JP4 | JP5 | JP6 | JP7 | JP8 |
|-----------+------+-----+-----+-----+-----+-----+-----+-----|
|Plug & Play| Open |Open |Open |Open |Open |Open |Open |Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT ADDRESS |
|------------------------------------------------------------|
| Setting | JP1 | JP2 | JP3 |
|---------------+--------------+--------------+--------------|
| COM1 (3F8h) | Closed | Closed | Closed |
|---------------+--------------+--------------+--------------|
| COM2 (2F8h) | Open | Closed | Closed |
|---------------+--------------+--------------+--------------|
| COM3 (3E8h) | Closed | Open | Closed |
|---------------+--------------+--------------+--------------|
| COM4 (2E8h) | Open | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INTERRUPT |
|------------------------------------------------------------|
| Setting | JP4 | JP5 | JP6 | JP7 | JP8 |
|---------+----------+---------+---------+---------+---------|
| 2 | Closed | Open | Open | Open | Open |
|---------+----------+---------+---------+---------+---------|
| 3 | Open | Closed | Open | Open | Open |
|---------+----------+---------+---------+---------+---------|
| 4 | Open | Open | Closed | Open | Open |
|---------+----------+---------+---------+---------+---------|
| 5 | Open | Open | Open | Closed | Open |
|---------+----------+---------+---------+---------+---------|
| 7 | Open | Open | Open | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MISCELLANEOUS TECHNICAL NOTES |
|------------------------------------------------------------|
| Note: The modem can be upgraded to 56Kbps via Flash ROM |
| from Cardinal Technologies, Inc. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SUPPORTED COMMAND SET |
|------------------------------------------------------------|
| Basic AT Commands |
|------------------------------------------------------------|
| AT, +++, A/ |
|------------------------------------------------------------|
| A, B, E, F, H, M, O, P, T, V, X |
|------------------------------------------------------------|
| &G, &T, &W, &Z |
|------------------------------------------------------------|
| S Registers |
|------------------------------------------------------------|
| S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, |
| S18, S25, S38 |
|------------------------------------------------------------|
| |
|------------------------------------------------------------|
| Note: See MHI Help File for full command documentation. |
+------------------------------------------------------------+
PROPRIETARY AT COMMAND SET
+------------------------------------------------------------+
| ADDITIONAL RESULT CODES |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &An [cmds] |
|--------------+---------------------------------------------|
| Description: | Enables or disables additional result code |
| | subsets |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &A0 | ARQ result codes disabled |
|--------------+---------------------------------------------|
| í &A1 | ARQ result codes enabled |
|--------------+---------------------------------------------|
| &A2 | V.32 modulation indicator added |
|--------------+---------------------------------------------|
| &A3 | Protocol indicators added |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BREAK HANDLING |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Yn [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets destructive/nondestructive break |
| | handling |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &Y0 | Destructive break not sent |
|--------------+---------------------------------------------|
| &Y1 | Expedited, destructive break sent |
|--------------+---------------------------------------------|
| &Y2 | Expedited, non-destructive break sent |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DATA SET READY (DSR) |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Sn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects DSR options |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í &S0 | DSR forced high |
|--------------+---------------------------------------------|
| &S1 | DSR high only while modem is handshaking or |
| | connected |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
|--------------+---------------------------------------------|
| &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. |
|--------------+---------------------------------------------|
| &U15 | Set minimum connect speed to 31.2Kbps. |
|--------------+---------------------------------------------|
| &U16 | Set minimum connect speed to 33.6Kbps. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
|--------------+---------------------------------------------|
| &N0 | No maximum connect speed. |
|--------------+---------------------------------------------|
| &N1 | Fixed link rate of 300bps. |
|--------------+---------------------------------------------|
| &N2 | Fixed link rate of 1200bps. |
|--------------+---------------------------------------------|
| &N3 | Fixed link rate of 2400bps. |
|--------------+---------------------------------------------|
| &N4 | Fixed link rate of 4800bps. |
|--------------+---------------------------------------------|
| &N5 | Fixed link rate of 7200bps. |
|--------------+---------------------------------------------|
| &N6 | Fixed link rate of 9600bps. |
|--------------+---------------------------------------------|
| &N7 | Fixed link rate of 12Kbps. |
|--------------+---------------------------------------------|
| &N8 | Fixed link rate of 14.4Kbps. |
|--------------+---------------------------------------------|
| &N9 | Fixed link rate of 16.8Kbps. |
|--------------+---------------------------------------------|
| &N10 | Fixed link rate of 19.2Kbps. |
|--------------+---------------------------------------------|
| &N11 | Fixed link rate of 21.6Kbps. |
|--------------+---------------------------------------------|
| &N12 | Fixed link rate of 24Kbps. |
|--------------+---------------------------------------------|
| &N13 | Fixed link rate of 26.4Kbps. |
|--------------+---------------------------------------------|
| &N14 | Fixed link rate of 28.8Kbps. |
|--------------+---------------------------------------------|
| &N15 | Fixed link rate of 31.2Kbps. |
|--------------+---------------------------------------------|
| &N16 | Fixed link rate of 33.6Kbps. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DATA CARRIER DETECT (DCD) |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Cn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects whether the DCD option is enabled |
| | or disabled |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &C0 | DCD override enabled |
|--------------+---------------------------------------------|
| &C1 | DCD enabled after carrier signal detected |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
|--------------+---------------------------------------------|
| DR | Answer mode enabled; originate mode |
| | disabled following handshake initiation. |
|--------------+---------------------------------------------|
| 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! | 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DISCONNECT |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] Yn [cmds] |
|--------------+---------------------------------------------|
| Description: | Commands disconnection configuration |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| Y0 | Profile 0 in NVRAM |
|--------------+---------------------------------------------|
| Y1 | Profile 1 in NVRAM |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ERROR CONTROL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Mn [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets error control for connections at |
| | 1200bps and higher |
|--------------+---------------------------------------------|
| Command | Mode |
|--------------+---------------------------------------------|
| &M0 | Error control disabled |
|--------------+---------------------------------------------|
| &M1 | Automatic selection of error control and |
| | non-error control |
|--------------+---------------------------------------------|
| &M2 | Enable error control link |
|--------------+---------------------------------------------|
| &M3 | Speaker on until modem connects |
|--------------+---------------------------------------------|
| í &M4 | Normal/ARQ mode. |
|--------------+---------------------------------------------|
| &M5 | ARQ mode |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FACTORY DEFAULT PROFILE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &F [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets values in active profile to values |
| | found in the default profile |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &F0 | Standard factory configuration |
|--------------+---------------------------------------------|
| &F1 | Factory configuration1; hardware flow |
| | control template |
|--------------+---------------------------------------------|
| &F2 | Factory configuration 2; software flow |
| | control template |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Kn [cmds] |
|--------------+---------------------------------------------|
| Description: | Enables/disables flow control |
|--------------+---------------------------------------------|
| Command | Line Type |
|--------------+---------------------------------------------|
| &K0 | Flow control disabled |
|--------------+---------------------------------------------|
| &K1 | Hardware, RTS/CTS flow control enabled |
|--------------+---------------------------------------------|
| &K2 | Software, XON/XOFF flow control enabled |
|--------------+---------------------------------------------|
| í &K3 | Transparent software, XON/XOFF flow control |
| | enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| HELP |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | n$ |
|--------------+---------------------------------------------|
| Description: | Displays help for commands. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| $ | Display help screen for single letter AT |
| | commands |
|--------------+---------------------------------------------|
| &$ | Display help screen for extended commands |
|--------------+---------------------------------------------|
| D$ | Display help screen for dial commands |
|--------------+---------------------------------------------|
| S$ | Display help screen for S-registers |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PULSE DIALING RATIO |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Pn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects pulse dial make/break ratio |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &P0 | 39/61ms at 10pps (North America) |
|--------------+---------------------------------------------|
| &P1 | 33/67ms at 10pps (Europe) |
+------------------------------------------------------------+
+------------------------------------------------------------+
| RECEIVE DATA FLOW CONTROL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &In [cmds] |
|--------------+---------------------------------------------|
| Description: | Enables RD flow control options |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í&I0 | Software flow control disabled |
|--------------+---------------------------------------------|
| &I1 | XON/XOFF signals passed through local modem |
|--------------+---------------------------------------------|
| &I2 | XON/XOFF signals trapped by local modem |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REPEAT PREVIOUS COMMAND |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | A> |
|--------------+---------------------------------------------|
| Description: | Repeats previous command continuously. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 | Reports RAM checksum |
|--------------+---------------------------------------------|
| I3 | Reports ID string |
|--------------+---------------------------------------------|
| I4 | Reports current modem settings |
|--------------+---------------------------------------------|
| I5 | Reports NVRAM settings |
|--------------+---------------------------------------------|
| I6 | Reports data connection information |
|--------------+---------------------------------------------|
| I7 | Reports manufacturer and model information |
+------------------------------------------------------------+
+------------------------------------------------------------+
| RESULT CODES |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] Qn [cmds] |
|--------------+---------------------------------------------|
| Description: | Enables modem to send result codes to the |
| | DTE |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| íQ0 | Result code sending enabled |
|--------------+---------------------------------------------|
| Q1 | Result code sending disabled |
|--------------+---------------------------------------------|
| Q2 | Result code sending only in originate mode |
+------------------------------------------------------------+
+------------------------------------------------------------+
| RTS |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Rn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects RTS/CTS options |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &R0 | Reserved |
|--------------+---------------------------------------------|
| í &R1 | RTS ignored |
|--------------+---------------------------------------------|
| &R2 | Received data to computer only on RTS |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT RATE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Bn [cmds] |
|--------------+---------------------------------------------|
| Description: | Manages the serial port rate |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í &B0 | Serial speed follows connect speed |
|--------------+---------------------------------------------|
| &B1 | Serial speed locked |
|--------------+---------------------------------------------|
| &B2 | Fixed in ARQ mode, variable in non-ARQ mode |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SOFT RESET |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] Zn [cmds] |
|--------------+---------------------------------------------|
| Description: | Restores modem profiles previously saved in |
| | non-volatile RAM using the &W command. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| Z0 | Restore setting to profile selected by ATY |
| | command |
|--------------+---------------------------------------------|
| Z1 | Restore setting NVRAM profile 0 |
|--------------+---------------------------------------------|
| Z2 | Restore setting NVRAM profile 1 |
|--------------+---------------------------------------------|
| Z3 | Restores setting to factory default profile |
| | 0 |
|--------------+---------------------------------------------|
| Z4 | Restores setting to factory default profile |
| | 1 |
|--------------+---------------------------------------------|
| Z5 | Restores setting to factory default profile |
| | 2 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TRANSMIT DATA FLOW CONTROL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Hn [cmds] |
|--------------+---------------------------------------------|
| Description: | Enables TD flow control options |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í &H0 | Flow control disabled |
|--------------+---------------------------------------------|
| &H1 | CTS hardware flow control enabled |
|--------------+---------------------------------------------|
| &H2 | Software flow control enabled |
|--------------+---------------------------------------------|
| &H3 | Hardware and software flow control enabled |
+------------------------------------------------------------+
S(STATUS) -REGISTERS
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S13 |
|------------------------------------------------------------|
| Format: | AT [cmds] S13=n [cmds] |
|--------------+---------------------------------------------|
| Range: | 0-174 |
|--------------+---------------------------------------------|
| Unit: | Bit-mapped |
|--------------+---------------------------------------------|
| Description: | Controls reset, dial mode |
|--------------+---------------------------------------------|
| Bit | Value | Function |
|------+-------+---------------------------------------------|
| 0 | 0 | Unidentified |
| | | |
| | 1 | Resets when DTR drops |
|------+-------+---------------------------------------------|
| 1 | 0 | Unidentified |
| | | |
| | 1 | Resets non-MNP transmit buffer from 1.5K to |
| | | 128bytes |
|------+-------+---------------------------------------------|
| 2 | 0 | Unidentified |
| | | |
| | 1 | Sets backspace key to delete |
|------+-------+---------------------------------------------|
| 3 | 0 | Unidentified |
| | | |
| | 1 | On DTR signal, auto dials number stared at |
| | | NVRAM position 0 |
|------+-------+---------------------------------------------|
| 4 | 0 | Unidentified |
| | | |
| | 1 | At power on/reset, auto dials number stared |
| | | at NVRAM position 0 |
|------+-------+---------------------------------------------|
| 5 | 0 | Enables V.32bis ASL mode |
| | | |
| | 1 | Disables V.31bis ASL mode |
|------+-------+---------------------------------------------|
| 6 | 0 | Enables quick retrains |
| | | |
| | 1 | Disables quick retrains |
|------+-------+---------------------------------------------|
| 7 | 0 1 | Unidentified |
| | | |
| | | Disconnect on escape code |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S15 |
|------------------------------------------------------------|
| Format: | AT [cmds] S15=n [cmds] |
|--------------+---------------------------------------------|
| Unit: | Bit-mapped |
|--------------+---------------------------------------------|
| Description: | Disable/Enable MNP |
|--------------+---------------------------------------------|
| Bit | Value | Function |
|------+-------+---------------------------------------------|
| 0 | 0 | Enable ARQ/MNP for V.22 |
| | | |
| | 1 | Disable ARQ/MNP for V.22 |
|------+-------+---------------------------------------------|
| 1 | 0 | Enable ARQ/MNP for V.22bis |
| | | |
| | 1 | Disable ARQ/MNP for V.22bis |
|------+-------+---------------------------------------------|
| 2 | 0 | Enable ARQ/MNP for V.32/V.32bis/V.32terbo |
| | | |
| | 1 | Enable ARQ/MNP for V.32/V.32bis/V.32terbo |
|------+-------+---------------------------------------------|
| 3 | 0 | Enable MNP handshake |
| | | |
| | 1 | Disable MNP handshake |
|------+-------+---------------------------------------------|
| 4 | 0 | Enable MNP level 4 |
| | | |
| | 1 | Disable MNP level 4 |
|------+-------+---------------------------------------------|
| 5 | 0 | Enable MNP level 3 |
| | | |
| | 1 | Disable MNP level 3 |
|------+-------+---------------------------------------------|
| 6 | 0 | MNP compatibility |
| | | |
| | 1 | MNP incompatibility |
|------+-------+---------------------------------------------|
| 7 | 0 1 | Enable V.42 operation |
| | | |
| | | Disable V.42 operation |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TEST MODES |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S16=n [cmds] |
|--------------+---------------------------------------------|
| Unit: | Bit-mapped |
|--------------+---------------------------------------------|
| Description: | Controls touch tone dialing test. |
|--------------+---------------------------------------------|
| Bit | Value | Function |
|------+-------+---------------------------------------------|
| 0 | 0 | Reserved |
|------+-------+---------------------------------------------|
| 1 | 0 | Touch tone dialing test not in progress |
| | | |
| | 1 | Touch tone dialing test in progress |
|------+-------+---------------------------------------------|
| 2 | 0 | Test pattern generation not in progress |
| | | |
| | 1 | Test pattern generation in progress |
|------+-------+---------------------------------------------|
| 3-7 | 0 | Reserved |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INACTIVITY TIMER |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format | AT [cmds] S19=n [cmds] |
|--------------+---------------------------------------------|
| Unit: | 10 seconds |
|--------------+---------------------------------------------|
| Description: | Maximum duration of DTE and DCE inactivity |
| | allowed prior to initiating hang-up |
| | process. |
|------------------------------------------------------------|
| Note: S19=0 disables the timer and allows indefinite |
| inactivity. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BREAK LENGTH |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format | AT [cmds] S21=n [cmds] |
|--------------+---------------------------------------------|
| Unit: | 10ms |
|--------------+---------------------------------------------|
| Description: | Sets duration of breaks sent from the modem |
| | to the computer |
|------------------------------------------------------------|
| Note: Applies to MNP or V.42 mode only. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL CHARACTER - XON |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S22=n [cmds] |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | ASCII |
|--------------+---------------------------------------------|
| Description: | Sets the character used to represent XON |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL CHARACTER - XOFF |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S23=n [cmds] |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | ASCII |
|--------------+---------------------------------------------|
| Description: | Sets the character used to represent XOFF |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S27 |
|------------------------------------------------------------|
| Format | AT [cmds] S27=n [cmds] |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | Bit-mapped |
|--------------+---------------------------------------------|
| Description: | Enables/disables modulation protocols |
|--------------+---------------------------------------------|
| Bit | Value | Function |
|------+-------+---------------------------------------------|
| 0 | 0 | Disable ITU-T modulation at 300bps for |
| | | overseas calls: in V.21 mode, the modem |
| | 1 | answers both overseas and domestic calls, |
| | | but only originates V.21 calls |
| | | |
| | | Enable ITU-T modulation at 300bps for |
| | | overseas calls: in V.21 mode, the modem |
| | | answers both overseas and domestic calls, |
| | | but only originates V.21 calls |
|------+-------+---------------------------------------------|
| 1 | 0 | Disable unencoded modulation in V.32 mode |
| | | |
| | 1 | Enable unencoded modulation in V.32 mode |
|------+-------+---------------------------------------------|
| 2 | 0 | Enable V.32 modulation |
| | | |
| | 1 | Disable V.32 modulation |
|------+-------+---------------------------------------------|
| 3 | 0 | Enable 2100Hz answer tone |
| | | |
| | 1 | Disable 2100Hz answer tone |
|------+-------+---------------------------------------------|
| 4 | 0 | Disable V.23 fallback mode |
| | | |
| | 1 | Enable V.23 fallback mode |
|------+-------+---------------------------------------------|
| 5 | 0 | Enable V.32bis mode |
| | | |
| | 1 | Disable V.32bis mode |
|------+-------+---------------------------------------------|
| 6 | 0 | Reserved |
|------+-------+---------------------------------------------|
| 7 | 0 1 | Enable codes |
| | | |
| | | Disable codes and enters software |
| | | compatibility mode |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONNECTION TIME |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format | AT [cmds] S28=n [cmds] |
|--------------+---------------------------------------------|
| Unit: | .1 second |
|--------------+---------------------------------------------|
| Description: | Sets V.32 duration |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| S28=0 | Eliminates the V.32 answer tone for a |
| | faster connection |
|--------------+---------------------------------------------|
| S28=8 | Times are in .1 second |
|--------------+---------------------------------------------|
| S28=255 | Disable connections except V.32 at 9600bps |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FALLBACK TIMER |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format | AT [cmds] S29=n [cmds] |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | .01 second |
|--------------+---------------------------------------------|
| Description: | Sets the duration of the V.21 answer mode |
| | fallback timer |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S32 |
|------------------------------------------------------------|
| Format: | AT [cmds] S32=n [cmds] |
|-----------------+------------------------------------------|
| Range: | 0-255 |
|-----------------+------------------------------------------|
| Description: | Select setup for 28.8 and higher speed |
| | modems |
|------------------------------------------------------------|
| Bit | Value | Function |
|-----------+-------------+----------------------------------|
| 0 | 0 | Disable V.8 call indicate |
| | | |
| | 1 | Enable V.8 call indicate |
|-----------+-------------+----------------------------------|
| 1 | 0 | Disable V.8 mode |
| | | |
| | 1 | Enable V.8 mode |
|-----------+-------------+----------------------------------|
| 2 | 0 | Enable V.FC modulation |
| | | |
| | 1 | Disable V.FC modulation |
|-----------+-------------+----------------------------------|
| 3 | 0 | Enable V.34 modulation |
| | | |
| | 1 | Disable V.34 modulation |
|-----------+-------------+----------------------------------|
| 4 | 0 | Enable V.34+ modulation |
| | | |
| | 1 | Disable V.34+ modulation |
|-----------+-------------+----------------------------------|
| 5-7 | 0 | Reserved |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S33 |
|------------------------------------------------------------|
| Format: | AT [cmds] S33=n [cmds] |
|----------------+-------------------------------------------|
| Range: | 0-255 |
|----------------+-------------------------------------------|
| Description: | Disable/enable data rates |
|------------------------------------------------------------|
| Bit | Value | Function |
|----------+--------+----------------------------------------|
| 0 | 0 | Enable 2400 symbol rate |
| | | |
| | 1 | Disable 2400 symbol rate |
|----------+--------+----------------------------------------|
| 1 | 0 | Enable 2743 symbol rate |
| | | |
| | 1 | Disable 2743 symbol rate |
|----------+--------+----------------------------------------|
| 2 | 0 | Enable 2800 symbol rate |
| | | |
| | 1 | Disable 2800 symbol rate |
|----------+--------+----------------------------------------|
| 3 | 0 | Enable 3000 symbol rate |
| | | |
| | 1 | Disable 3000 symbol rate |
|----------+--------+----------------------------------------|
| 4 | 0 | Enable 3200 symbol rate |
| | | |
| | 1 | Disable 3200 symbol rate |
|----------+--------+----------------------------------------|
| 5 | 0 | Enable 3429 symbol rate |
| | | |
| | 1 | Disable 3429 symbol rate |
|----------+--------+----------------------------------------|
| 6 | 0 | Reserved |
|----------+--------+----------------------------------------|
| 7 | 0 | Enable shaping |
| | | |
| | 1 | Disable shaping |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S34 |
|------------------------------------------------------------|
| Format: | AT [cmds] S34=n [cmds] |
|----------------+-------------------------------------------|
| Range: | 0-255 |
|----------------+-------------------------------------------|
| Description: | Disable/enable trellis encoding |
|------------------------------------------------------------|
| Bit | Value | Function |
|----------+-------+-----------------------------------------|
| 0 | 0 | Enable 8S-2D trellis encoding |
| | | |
| | 1 | Disable 8S-2D trellis encoding |
|----------+-------+-----------------------------------------|
| 1 | 0 | Enable 16S-4D trellis encoding |
| | | |
| | 1 | Disable 16S-4D trellis encoding |
|----------+-------+-----------------------------------------|
| 2 | 0 | Enable 32S-2D trellis encoding |
| | | |
| | 1 | Disable 32S-2D trellis encoding |
|----------+-------+-----------------------------------------|
| 3 | 0 | Enable 64S-4D trellis encoding |
| | | |
| | 1 | Disable 64S-4D trellis encoding |
|----------+-------+-----------------------------------------|
| 4 | 0 | Reserved |
|----------+-------+-----------------------------------------|
| 5 | 0 | Enable TX level deviation |
| | | |
| | 1 | Disable TX level deviation |
|----------+-------+-----------------------------------------|
| 6 | 0 | Enable pre-emphasis |
| | | |
| | 1 | Disable pre-emphasis |
|----------+-------+-----------------------------------------|
| 7 | 0 | Enable pre-coding |
| | | |
| | 1 | Disable pre-coding |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S41 |
|------------------------------------------------------------|
| Format: | AT [cmds] S41=n [cmds] |
|----------------+-------------------------------------------|
| Range: | 0-255 |
|----------------+-------------------------------------------|
| Description: | Enable/disable distinctive ring |
|------------------------------------------------------------|
| Bit | Value | Function |
|----------+----------+--------------------------------------|
| 0 | 0 | Disable distinctive ring |
| | | |
| | 1 | Enable distinctive ring |
|----------+----------+--------------------------------------|
| 1-7 | 0 | Reserved |
+------------------------------------------------------------+