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# 3COM CORPORATION
COURIER V.32TERBO FAX WITH ASL
Card Type Fax, Modem (asynchronous)
Chip Set U.S. Robotics
Maximum Data Rate 28.8Kbps
Maximum Fax Rate 14.4Kbps
Data Bus Unidentified
Fax Class Unidentified
Data Modulation Bell 103/212A
Protocol
ITU-T V.21, V.22, V.22bis, V.32,
V.32bis, V.32terbo
Fax Modulation Unidentified
Protocol
Error MNP5, V.42, V.42bis
Correction/Compression
54155
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Setting | Label | Position |
|----------------------------------------+--------+----------|
| í DTR normal | SW1/1 | Off |
|----------------------------------------+--------+----------|
| DTR forced high | SW1/1 | On |
|----------------------------------------+--------+----------|
| í Verbal result codes | SW1/2 | Off |
|----------------------------------------+--------+----------|
| Numeric result codes | SW1/2 | On |
|----------------------------------------+--------+----------|
| í Enable result codes displayed | SW1/3 | On |
|----------------------------------------+--------+----------|
| Disable result codes displayed | SW1/3 | Off |
|----------------------------------------+--------+----------|
| í Local echo enabled | SW1/4 | Off |
|----------------------------------------+--------+----------|
| Local echo disabled | SW1/4 | On |
|----------------------------------------+--------+----------|
| í Auto answer disabled | SW1/5 | On |
|----------------------------------------+--------+----------|
| Auto answer enabled | SW1/5 | Off |
|----------------------------------------+--------+----------|
| í CD signal normal | SW1/6 | Off |
|----------------------------------------+--------+----------|
| CD signal forced high | SW1/6 | On |
|----------------------------------------+--------+----------|
| í Result codes displayed during both | SW1/7 | Off |
| answer and originate mode | | |
|----------------------------------------+--------+----------|
| Result codes displayed in originate | SW1/7 | On |
| mode only | | |
|----------------------------------------+--------+----------|
| í Smart mode enabled | SW1/8 | On |
|----------------------------------------+--------+----------|
| Dumb mode enabled | SW1/8 | Off |
|----------------------------------------+--------+----------|
| í Normal operation enabled | SW1/9 | On |
|----------------------------------------+--------+----------|
| Escape sequence enabled | SW1/9 | Off |
|----------------------------------------+--------+----------|
| í Restore NVRAM defaults | SW1/10 | Off |
|----------------------------------------+--------+----------|
| Restore factory defaults | SW1/10 | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SEND/RECEIVE PIN ASSIGNMENT |
|------------------------------------------------------------|
| Setting | Quad Switch |
|-----------------------------+------------------------------|
| í Normal | Off |
|-----------------------------+------------------------------|
| Not used | On |
+------------------------------------------------------------+
Proprietary AT Command Set
+------------------------------------------------------------+
| ABORT |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | Any key |
|--------------+---------------------------------------------|
| Description: | Aborts answering/originating a call; modem |
| | hangs up. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ANSWER |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] A |
|--------------+---------------------------------------------|
| Description: | Enables manual answer mode, the modem goes |
| | off-hook; pressing any key will abort. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ANSWER SEQUENCE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] Bn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects the answer sequence the modem will |
| | use |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í B0 | V.32 mode/ITU-T answer sequence enabled |
|--------------+---------------------------------------------|
| B1 | HST mode/Bell answer tone enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ATTENTION |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] |
|--------------+---------------------------------------------|
| Description: | Tells the modem that a command follows or |
| | use alone to test OK result code |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT MAPPED REGISTERS |
|------------------------------------------------------------|
| Register | Default |
|------------------------------+-----------------------------|
| S51 | 0 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S13 |
|------------------------------------------------------------|
| Format | AT [cmds] S13=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | Bit-mapped |
|--------------+---------------------------------------------|
| Description: | Controls DTR reset, DTR dialing, reset |
| | dialing, HST modulation, and MNP3. |
|--------------+---------------------------------------------|
| Bit | Value | Function |
|------+-------+---------------------------------------------|
| 0 | í 0 | DTR normal |
| | | |
| | 1 | Reset on low DTR |
|------+-------+---------------------------------------------|
| 1 | í 0 | Normal auto answer operation |
| | | |
| | 1 | When ring is received, enter originate and |
| | | listen for answer tone |
|------+-------+---------------------------------------------|
| 2 | í 0 | Pause 250msec. Before displaying result |
| | | codes |
| | 1 | |
| | | Immediate result code display |
|------+-------+---------------------------------------------|
| 3 | í 0 | DTR dialing disabled |
| | | |
| | 1 | DTR dialing enabled |
|------+-------+---------------------------------------------|
| 4 | í 0 | Reset dialing disabled |
| | | |
| | 1 | Reset dialing enabled |
|------+-------+---------------------------------------------|
| 5 | í 0 | HST modulation enabled |
| | | |
| | 1 | HST modulation disabled |
|------+-------+---------------------------------------------|
| 6 | í 0 | MNP 3 enabled |
| | | |
| | 1 | MNP 3 disabled |
|------+-------+---------------------------------------------|
| 7 | í 0 | Hardware reset disabled |
| | | |
| | 1 | Hardware reset enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S15 |
|------------------------------------------------------------|
| Format: | AT [cmds] S15=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | Bit-mapped |
|--------------+---------------------------------------------|
| Description: | Controls HST high frequency equalization, |
| | online fallback, back channel, |
| | non-error-correcting mode buffer, MNP4, |
| | BS/DEL switch, MNP compliance, and Custom |
| | applications. |
|--------------+---------------------------------------------|
| Bit | Value | Function |
|------+-------+---------------------------------------------|
| 0 | í 0 | HST high frequency equalization enabled |
| | | |
| | 1 | HST high frequency equalization disabled |
|------+-------+---------------------------------------------|
| 1 | í 0 | Online fallback enabled |
| | | |
| | 1 | Online fallback disabled |
|------+-------+---------------------------------------------|
| 2 | í 0 | 300bps back channel enabled |
| | | |
| | 1 | 300bps back channel disabled |
|------+-------+---------------------------------------------|
| 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 | Use backspace key for delete disabled |
| | | |
| | 1 | Use backspace key for delete enabled |
|------+-------+---------------------------------------------|
| 6 | í 0 | MNP normal |
| | | |
| | 1 | MNP adjusted for non compliant modems |
|------+-------+---------------------------------------------|
| 7 | í 0 | Custom applications only disabled |
| | | |
| | 1 | Custom applications only enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S27 |
|------------------------------------------------------------|
| Format: | AT [cmds] S27=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0-191 |
|--------------+---------------------------------------------|
| Unit: | Bit-mapped |
|--------------+---------------------------------------------|
| Description: | Controls V.21, V.32 encoding and |
| | modulation, V.42 answer tone and handshake, |
| | and Unusual software incompatibility. |
|--------------+---------------------------------------------|
| Bit | Value | Function |
|------+-------+---------------------------------------------|
| 0 | í 0 | V.21 disabled |
| | | |
| | 1 | V.21 enabled |
|------+-------+---------------------------------------------|
| 1 | í 0 | V.32 trellis coding disabled |
| | | |
| | 1 | V.32 trellis coding enabled |
|------+-------+---------------------------------------------|
| 2 | í 0 | V.32 modulation enabled |
| | | |
| | 1 | V.32 modulation disabled |
|------+-------+---------------------------------------------|
| 3 | í 0 | 2100Hz answer tone enabled |
| | | |
| | 1 | 2100Hz answer tone disabled |
|------+-------+---------------------------------------------|
| 4 | í 0 | MNP handshake enabled |
| | | |
| | 1 | MNP handshake disabled |
|------+-------+---------------------------------------------|
| 5 | í 0 | V.42 detection phase enabled |
| | | |
| | 1 | V.42 detection phase disabled |
|------+-------+---------------------------------------------|
| 6 | í 0 | Not used |
|------+-------+---------------------------------------------|
| 7 | í 0 | Unusual software incompatibility disabled |
| | | |
| | 1 | Unusual software incompatibility enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S32 |
|------------------------------------------------------------|
| Format | AT [cmds] S34=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0-63 |
|--------------+---------------------------------------------|
| Unit: | Bit-mapped |
|--------------+---------------------------------------------|
| Description: | Controls V.23/V.32/V.32bis modulations. |
| | Change LED and enable MI/MIC. |
|--------------+---------------------------------------------|
| Bit | Value | Function |
|------+-------+---------------------------------------------|
| 0 | í 0 | V.32bis enabled |
| | | |
| | 1 | V.32bis disabled |
|------+-------+---------------------------------------------|
| 1 | í 0 | Enhanced V.32 enabled |
| | | |
| | 1 | Enhanced V.32 disabled |
|------+-------+---------------------------------------------|
| 2 | í 0 | Quick V.32 retrain enabled |
| | | |
| | 1 | Quick V.32 retrain disabled |
|------+-------+---------------------------------------------|
| 3 | í 0 | V.23 disabled |
| | | |
| | 1 | V.23 enabled |
|------+-------+---------------------------------------------|
| 4 | í 0 | Do not change MR LED to represent DSR |
| | | |
| | 1 | Change MR LED to represent DSR |
|------+-------+---------------------------------------------|
| 5 | í 0 | Disable MI/MIC |
| | | |
| | 1 | Enable MI/MIC |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BREAK LENGTH |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S21=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 10 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | .01 second |
|--------------+---------------------------------------------|
| 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 | Empty buffer only |
|--------------+---------------------------------------------|
| í &Y1 | Empties buffer and break is sent |
| | immediately |
|--------------+---------------------------------------------|
| &Y2 | Do not empty buffer and break is sent |
| | immediately |
|--------------+---------------------------------------------|
| &Y3 | Do not empty buffer or send break |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CARRIER DETECT (CD) |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Cn [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls the CD signal |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &C0 | Modem does not respond to CD signal |
|--------------+---------------------------------------------|
| í &C1 | CD signal normal |
+------------------------------------------------------------+
+------------------------------------------------------------+
| COMPRESSION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Kn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects data compression |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &K0 | Data compression disabled |
|--------------+---------------------------------------------|
| í &K1 | Auto enabled/disable data compression |
|--------------+---------------------------------------------|
| &K2 | Data compression enabled |
|--------------+---------------------------------------------|
| &K3 | V.42bis data compression enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONNECTION SPEED |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Nn [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets required connection speed, modem will |
| | hang up if it cannot connect. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í &N0 | Variable |
|--------------+---------------------------------------------|
| &N1 | 300bps |
|--------------+---------------------------------------------|
| &N2 | 1200bps |
|--------------+---------------------------------------------|
| &N3 | 2400bps |
|--------------+---------------------------------------------|
| &N4 | 4800bps |
|--------------+---------------------------------------------|
| &N5 | 7200bps |
|--------------+---------------------------------------------|
| &N6 | 9600bps |
|--------------+---------------------------------------------|
| &N7 | 12Kbps |
|--------------+---------------------------------------------|
| &N8 | 14.4Kbps |
|--------------+---------------------------------------------|
| &N9 | 16.8Kbps |
|--------------+---------------------------------------------|
| &N10 | 21.6Kbps |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DATA SET READY (DSR) |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Sn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects DSR options |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í &S0 | DSR forced high |
|--------------+---------------------------------------------|
| &S1 | DSR controlled by modem |
|--------------+---------------------------------------------|
| &S2 | DSR toggled, CTS follows CD |
|--------------+---------------------------------------------|
| &S3 | DSR toggled |
|--------------+---------------------------------------------|
| &S4 | Modem sends DTE DSR signal following CD |
| | signal |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DATA TERMINAL READY (DTR) |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Dn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects modem response to DTR |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &D0 | Modem does not respond to DTR |
|--------------+---------------------------------------------|
| &D1 | Modem goes to command mode after DTR |
| | toggles |
|--------------+---------------------------------------------|
| í &D2 | Modem uses DTR as normal |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CTS/RTS - DELAY |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S26=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 1 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | .1 second |
|--------------+---------------------------------------------|
| Description: | Sets the length of time between RTS and CTS |
| | signal sending |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAL |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] D<#> [cmds] |
|--------------+---------------------------------------------|
| Example: | ATDT 443-3388,,,1111; |
|--------------+---------------------------------------------|
| 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 |
|--------------+---------------------------------------------|
| í P | Pulse dialing enabled |
|--------------+---------------------------------------------|
| T | Tone dialing enabled |
|--------------+---------------------------------------------|
| , | Dialing paused for 2 seconds |
|--------------+---------------------------------------------|
| ; | Modem returned to command state after |
| | dialing. Can only be placed at the end of |
| | the dial command. |
|--------------+---------------------------------------------|
| " | Dials letters as if they were numbers; |
| | ATDT"GOMICRO" |
|--------------+---------------------------------------------|
| ! | Flash function initiated |
|--------------+---------------------------------------------|
| @ | Dial, wait for quiet answer, then continue |
| | to execute the rest of the dial string |
|--------------+---------------------------------------------|
| W | Dial, wait for second dial tone, then |
| | continue to execute the rest of the dial |
| | string |
|--------------+---------------------------------------------|
| R | Answer mode enabled; originate mode |
| | disabled following handshake initiation. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAL - LAST NUMBER |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] DL [cmds] |
|--------------+---------------------------------------------|
| Description: | Re-dial last number dialed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAL - STORED NUMBER |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] DSn [cmds] |
|--------------+---------------------------------------------|
| Description: | Dial stored number from memory location n |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DISCONNECT BUFFER DELAY |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format | AT [cmds] S38=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | 1 second |
|--------------+---------------------------------------------|
| Description: | Sets maximum duration allowed during |
| | buffered data calls for modem to perform |
| | clearing functions after losing |
| | carrier-signal or receiving a clear call |
| | signal from the remote modem and before |
| | initiating hang-up process. A value of 0 |
| | will allow the modem to hanging-up after |
| | DTR drops. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ECHO |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] En [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls echo function; display keyboard |
| | commands when enabled. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| E0 | Echo function disabled |
|--------------+---------------------------------------------|
| í E1 | Echo function enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ECHO - ON-LINE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] Fn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects whether data sent while in data |
| | mode are echoed |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| F0 | Local echo enabled |
|--------------+---------------------------------------------|
| í F1 | Local echo disabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ERROR CORRECTION MODE (ARQ) |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Mn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects active error correction protocols |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &M0 | Normal mode only |
|--------------+---------------------------------------------|
| &M1 | Asynchronous command mode and synchronous |
| | data mode |
|--------------+---------------------------------------------|
| í &M4 | Normal/ARQ mode |
|--------------+---------------------------------------------|
| &M5 | ARQ mode only |
|--------------+---------------------------------------------|
| &M6 | Character-oriented synchronous |
|--------------+---------------------------------------------|
| &M7 | HDLC synchronous |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ESCAPE SEQUENCE |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | +++AT [cmds] <CR> |
|--------------+---------------------------------------------|
| Description: | Initiates the escape sequence and returns |
| | the modem to the on-line command state if |
| | it receives three escape characters set in |
| | S2 within the time allotted by S12. |
|------------------------------------------------------------|
| Note: Do not precede this command with AT. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| EXTENDED COMMAND SET |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT <prefix> |
|--------------+---------------------------------------------|
| Description: | Shows command help screens for all commands |
| | beginning with the given prefix. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| & | Shows AT& extended command set |
|--------------+---------------------------------------------|
| % | Shows AT% extended command set |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 | ARQ result codes enabled and V.32 result |
| | code added |
|--------------+---------------------------------------------|
| í &A3 | Error control and compression result codes |
| | enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FACTORY DEFAULT PROFILE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Fn [cmds] |
|--------------+---------------------------------------------|
| Description: | Loads factory profile into non-volatile |
| | memory |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL CHARACTER - XOFF |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S23=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 19 |
|--------------+---------------------------------------------|
| Range: | 0-127 |
|--------------+---------------------------------------------|
| Unit: | ASCII |
|--------------+---------------------------------------------|
| 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: | ASCII |
|--------------+---------------------------------------------|
| Description: | Sets the character used to represent XON. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL PASS-THROUGH |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &In [cmds] |
|--------------+---------------------------------------------|
| Description: | Allows modem to act on, then transmit |
| | XON/XOFF characters. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í &I0 | Software flow control disabled |
|--------------+---------------------------------------------|
| &I1 | XON/XOFF passthrough enabled |
|--------------+---------------------------------------------|
| &I2 | XON/XOFF passthrough disabled |
|--------------+---------------------------------------------|
| &I3 | ENQ/ACK enabled in host mode |
|--------------+---------------------------------------------|
| &I4 | ENQ/ACK enabled in terminal mode |
|--------------+---------------------------------------------|
| &I5 | XON/XOFF passthrough disabled in error |
| | correction mode |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL TYPE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Rn [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls receive data hardware flow control |
| | and RTS signals |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &R0 | Delay CTS after RTS. See S26 on length of |
| | time. |
|--------------+---------------------------------------------|
| &R1 | Modem ignores RTS |
|--------------+---------------------------------------------|
| í &R2 | Received data to DTE when RTS is on |
+------------------------------------------------------------+
+------------------------------------------------------------+
| GUARD TIME |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S43=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 100 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | .02 second |
|--------------+---------------------------------------------|
| Description: | Sets guard time for remote access sequence |
+------------------------------------------------------------+
+------------------------------------------------------------+
| GUARD TONE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Gn [cmds] |
|--------------+---------------------------------------------|
| Description: | Commands the modem to transmit a guard tone |
|------------------------------------------------------------|
| Note: Used primarily for international data |
| transmission |
|------------------------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í &G0 | Guard tone disabled |
|--------------+---------------------------------------------|
| &G1 | 550Hz guard tone enabled |
|--------------+---------------------------------------------|
| &G2 | 1800Hz guard tone enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| HANDSHAKE TIMER |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S28=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 8 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | .1 second |
|--------------+---------------------------------------------|
| Description: | Sets the length of handshake time, so |
| | modems with V.32bis, V.FC and V.34 are |
| | given a chance to connect at 9600bps or |
| | higher. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| HOOK CONTROL |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] Hn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects whether the modem is on-hook or |
| | off-hook |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| H0 | Modem commanded to go on-hook (hang-up) |
|--------------+---------------------------------------------|
| H1 | Modem commanded to go off-hook (pick-up) |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INACTIVITY TIMER |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S19=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0-90 |
|--------------+---------------------------------------------|
| Unit: | 1 minute |
|--------------+---------------------------------------------|
| Description: | Sets the length of time that the modem does |
| | not receive information before it |
| | disconnects. S19=0 will disable. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LINE TYPE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Ln [cmds] |
|--------------+---------------------------------------------|
| Description: | Select the line type |
|------------------------------------------------------------|
| Command | Function |
|----------------+-------------------------------------------|
| í &L0 | Dial-up enabled |
|----------------+-------------------------------------------|
| &L1 | Leased-line enabled |
|----------------+-------------------------------------------|
| &L2 | HST cellular enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LIST AMPERSAND COMMANDS |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &$ [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays ampersand (&) commands |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LIST BASIC COMMANDS |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] $ [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays basic commands |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LIST DIAL COMMANDS |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] D$ [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays dial commands |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LIST PERCENT COMMANDS |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %$ [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays percent (%) commands |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LIST S-REGISTERS |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S$ [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays the S-registers |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LOCAL CONFIGURATION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Cn [cmds] |
|--------------+---------------------------------------------|
| Description: | Set local configuration remotely |
|------------------------------------------------------------|
| Command | Function |
|---------------+--------------------------------------------|
| í %C0 | Defer configuration until call terminated |
|---------------+--------------------------------------------|
| %C1 | Restore original configuration |
|---------------+--------------------------------------------|
| %C2 | Execute configuration immediately |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LOCAL SERIAL PORT SPEED |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Bn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects DTE speed remotely |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %B0 | Sets to 110bps speed |
|--------------+---------------------------------------------|
| %B1 | Sets to 300bps speed |
|--------------+---------------------------------------------|
| %B2 | Sets to 600bps speed |
|--------------+---------------------------------------------|
| %B3 | Sets to 1200bps speed |
|--------------+---------------------------------------------|
| %B4 | Sets to 2400bps speed |
|--------------+---------------------------------------------|
| %B5 | Sets to 4800bps speed |
|--------------+---------------------------------------------|
| %B6 | Sets to 9600bps speed |
|--------------+---------------------------------------------|
| %B7 | Sets to 19.2Kbps speed |
|--------------+---------------------------------------------|
| %B8 | Sets to 38.4Kbps speed |
|--------------+---------------------------------------------|
| %B9 | Sets to 57.6Kbps speed |
|--------------+---------------------------------------------|
| %B10 | Sets to 115.2Kbps speed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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, Variable |
| | in non-ARQ mode. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LOG-ON ATTEMPTS |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S41=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | Attempts |
|--------------+---------------------------------------------|
| Description: | Sets the number of allowable log-on |
| | attemtps for remote access |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ON-LINE |
|------------------------------------------------------------|
| Type: | Immediate |
|---------------+--------------------------------------------|
| Format: | AT [cmds] On [cmds] |
|---------------+--------------------------------------------|
| Description: | Controls on-line command (data |
| | transmission) mode options. |
|------------------------------------------------------------|
| Note: The O command must be placed at the end of the |
| command string. |
|------------------------------------------------------------|
| Command | Function |
|---------------+--------------------------------------------|
| O0 | On-line command mode with no retraining |
| | enabled |
|---------------+--------------------------------------------|
| O1 | On-line command mode with retraining |
| | enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARITY |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Fn [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets parity and data bits remotely |
|------------------------------------------------------------|
| Command | Function |
|--------------------+---------------------------------------|
| %F0 | No Parity, 8 data bits |
|--------------------+---------------------------------------|
| %F1 | Mark Parity, 7 data bits |
|--------------------+---------------------------------------|
| %F2 | Parity odd, 7 data bits |
|--------------------+---------------------------------------|
| %F3 | Parity even, 7 data bits |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PASSWORD |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | Read: AT [cmds] %Pn? [cmds] |
| | |
| | Write: AT [cmds] %Pn=x [cmds] |
|--------------+---------------------------------------------|
| Description: | Reads or writes a password to memory |
| | location n. n=0-1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PAUSE |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] / [cmds] |
|--------------+---------------------------------------------|
| Description: | Pause for 125 msec |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PULSE DIALING |
|------------------------------------------------------------|
| Type: | Configuration |
|----------------------+-------------------------------------|
| Format: | AT [cmds] P [cmds] |
|----------------------+-------------------------------------|
| Description: | Enables pulse dialing |
|------------------------------------------------------------|
| Note: This command can be duplicated with the P |
| modifier in the D (Dial) command. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PULSE DIALING RATIO |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Pn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects pulse dial make/break ratio |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í &P0 | 39/61ms at 10pps (North America) |
|--------------+---------------------------------------------|
| &P1 | 33/67ms at 10pps (Europe) |
+------------------------------------------------------------+
+------------------------------------------------------------+
| RECONNECT - LEASED-LINE |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S44=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 15 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | 1 second |
|--------------+---------------------------------------------|
| Description: | Sets the length of time the modem senses |
| | loss of carrier before re-establishing a |
| | leased-line conntion |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REMOTE ACCESS ESCAPE CHARACTER |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format | AT [cmds] S42=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 126 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | ASCII |
|--------------+---------------------------------------------|
| Description: | Selects a character used for the remote |
| | access escape sequence |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REPEAT CONTINUALLY |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] > [cmds] |
|--------------+---------------------------------------------|
| Description: | Causes modem to repeat command string |
| | continually or up to 10 dial attempts; |
| | until a keyboard key is pressed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REPEAT PREVIOUS COMMAND CONTINUALLY |
|------------------------------------------------------------|
| Type: | Immediate |
|-----------------+------------------------------------------|
| Format: | AT [cmds] A> [cmds] |
|-----------------+------------------------------------------|
| Description: | Repeat previous command continually |
|------------------------------------------------------------|
| Note: Do not precede this command with AT, or follow |
| it with <CR>. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REPEAT PREVIOUS COMMAND |
|------------------------------------------------------------|
| Type: | Immediate |
|------------------+-----------------------------------------|
| Format: | A/ |
|------------------+-----------------------------------------|
| Description: | Repeat previous command only once |
|------------------------------------------------------------|
| Note: Do not precede this command with AT, or follow |
| it with <CR>. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REPORT INFORMATION |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] In [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays information requested |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| I0 | Reports product code |
|--------------+---------------------------------------------|
| I1 | Reports ROM checksum |
|--------------+---------------------------------------------|
| I2 | Reports RAM checksum |
|--------------+---------------------------------------------|
| I3 | Reports call duration and real time |
|--------------+---------------------------------------------|
| I4 | Reports current command settings |
|--------------+---------------------------------------------|
| I5 | Reports NVRAM settings |
|--------------+---------------------------------------------|
| I6 | Reports link diagnostics |
|--------------+---------------------------------------------|
| I7 | Reports product configuration |
|--------------+---------------------------------------------|
| I10 | Reports dial security account status |
+------------------------------------------------------------+
+------------------------------------------------------------+
| RESULT CODES |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] Qn [cmds] |
|--------------+---------------------------------------------|
| Description: | Enables modem to send result codes to the |
| | DTE |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| Q0 | Result code sending enabled |
|--------------+---------------------------------------------|
| Q1 | Result code sending disabled |
|--------------+---------------------------------------------|
| Q2 | Result code sending enabled while in |
| | originate mode |
+------------------------------------------------------------+
+------------------------------------------------------------+
| RESULT CODE FORMAT |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] Vn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects word or numeric format for |
| | information-text and result codes |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| V0 | Numeric format enabled |
|--------------+---------------------------------------------|
| í V1 | Verbose (word) format enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SECURITY |
|------------------------------------------------------------|
| Type: | Register |
|-----------------+------------------------------------------|
| Format: | AT [cmds] S53=n [cmds] |
|-----------------+------------------------------------------|
| Default: | 0 |
|-----------------+------------------------------------------|
| Range: | 0-7 |
|-----------------+------------------------------------------|
| Description: | Controls security features |
|------------------------------------------------------------|
| Bit | Value | Function |
|------------------------------------------------------------|
| 0 | í | Dial security disabled |
| | 0 | |
| | | Dial security enabled |
| | 1 | |
|--------------+----+----------------------------------------|
| 1 | í | Password prompting disabled |
| | 0 | |
| | | Password prompting enabled |
| | 1 | |
|--------------+----+----------------------------------------|
| 2 | í | Local access passsword protection |
| | 0 | disabled |
| | | |
| | 1 | Local access passsword protection |
| | | enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SELECT CALL PROGRESS RESULT CODES |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] Xn [cmds] |
|--------------+---------------------------------------------|
| Default: | X7 |
|--------------+---------------------------------------------|
| Description: | Enables selection of tone detection and |
| | associated result code format options |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SOFT RESET |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] Z [cmds] |
|--------------+---------------------------------------------|
| Description: | Restores modem profile previously saved in |
| | non-volatile memory |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SPEAKER MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] Mn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects various speaker options |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| M0 | Speaker disabled |
|--------------+---------------------------------------------|
| í M1 | Speaker enabled until carrier signal |
| | detected |
|--------------+---------------------------------------------|
| M2 | Speaker enabled |
|--------------+---------------------------------------------|
| M3 | Speaker enabled following dialing, then |
| | disabled after carrier signal detected. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| STATUS-REGISTER |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | Read: AT [cmds] Sn? [cmds] |
| | |
| | Write: AT [cmds] Sn=x [cmds] |
|--------------+---------------------------------------------|
| Description: | Writes to or reads from a specified |
| | register |
|------------------------------------------------------------|
| Command | Function |
|---------------+--------------------------------------------|
| Sn.b=x | Write to register bit b using values 0 |
| | (off) and 1 (on) for x |
+------------------------------------------------------------+
+------------------------------------------------------------+
| STORE ACTIVE PROFILE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &W [cmds] |
|--------------+---------------------------------------------|
| Description: | Writes active profile into the non-volatile |
| | memory |
+------------------------------------------------------------+
+------------------------------------------------------------+
| STORE TELEPHONE NUMBER |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Zn=x [cmds] |
|--------------+---------------------------------------------|
| Description: | Writes selected telephone numbers into the |
| | non-volatile memory at location n |
|------------------------------------------------------------|
| Note: The characters described in the D command are |
| valid for use in the &Z command. |
|------------------------------------------------------------|
| Command | Function |
|---------------+--------------------------------------------|
| &Zn=L | Writes last executed dial string into the |
| | non-volatile memory at location n |
|---------------+--------------------------------------------|
| &Zn? | Displays phone number from non-volatile |
| | memory at location n |
|---------------+--------------------------------------------|
| &ZC=x | Writes command string into the |
| | non-volatile memory at location n |
|---------------+--------------------------------------------|
| &ZC? | Displays stored command string |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SYNCHRONOUS CLOCK SOURCE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Xn [cmds] |
|--------------+---------------------------------------------|
| Description: | Select clock source |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SYNCHRONOUS CLOCK SPEED |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Nn [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets synchronous clock speed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TEST MODES |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Tn [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls loopback tests, analog, digital, |
| | remote digital, and self tests. |
|------------------------------------------------------------|
| Command | Function |
|-----------------+------------------------------------------|
| &T0 | Testing disabled |
|-----------------+------------------------------------------|
| &T1 | Local analog loopback enabled |
|-----------------+------------------------------------------|
| &T3 | Local digital loopback enabled |
|-----------------+------------------------------------------|
| &T4 | Remote digital loopback enabled |
|-----------------+------------------------------------------|
| &T5 | Remote digital loopback prohibited |
|-----------------+------------------------------------------|
| &T6 | Remote digital loopback initiated |
|-----------------+------------------------------------------|
| &T7 | Remote digital loopback w/ self-test |
|-----------------+------------------------------------------|
| &T8 | Local analog loopback w/ self-test |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TEST MODES |
|------------------------------------------------------------|
| Type: | Configuration |
|----------------+-------------------------------------------|
| Format: | AT [cmds] S16=n [cmds] |
|----------------+-------------------------------------------|
| Default: | 0 |
|----------------+-------------------------------------------|
| Range: | 0-15 |
|----------------+-------------------------------------------|
| Description: | Controls loopback tests; analog, digital, |
| | dial, and test pattern tests. |
|------------------------------------------------------------|
| Bit | Value | Function |
|---------+--------+-----------------------------------------|
| 0 | í 0 | Local analog loopback disabled |
| | | |
| | 1 | Local analog loopback enabled |
|------------------------------------------------------------|
| 1 | í 0 | Dial test disabled |
| | | |
| | 1 | Dial test enabled |
|-------------+------+---------------------------------------|
| 2 | í 0 | Test pattern disabled |
| | | |
| | 1 | Test pattern enabled |
|-------------+------+---------------------------------------|
| 3 | í 0 | Remote digital loopback not initiated |
| | | |
| | 1 | Remote digital loopback initiated |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TEST TIMER |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format | AT [cmds] S18=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | 1 second |
|--------------+---------------------------------------------|
| Description: | Sets the maximum duration for modem tests |
|------------------------------------------------------------|
| Note: S18=0 disables the timer and allows an |
| indefinite duration. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TONE DIALING |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------------+---------------------------------------|
| Format: | AT [cmds] T [cmds] |
|--------------------+---------------------------------------|
| Description: | Enables tone dialing mode |
|------------------------------------------------------------|
| Note: This command can be duplicated with the T |
| modifier in the D (Dial) command. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TONE RECOGNITION |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %T [cmds] |
|--------------+---------------------------------------------|
| Description: | Enables tone recognition |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VOICE/DATA OPTIONS |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S32=n [cmds] |
|--------------+---------------------------------------------|
| Description: | Select various options the modem will |
| | perform |
|------------------------------------------------------------|
| Command | Function |
|---------------+--------------------------------------------|
| S32=0 | Disabled |
|---------------+--------------------------------------------|
| S32=1 | Modem commanded to go off-hook (pick-up) |
| | in originate mode |
|---------------+--------------------------------------------|
| S32=2 | Modem commanded to go off-hook (pick-up) |
| | in answer mode |
|---------------+--------------------------------------------|
| S32=3 | Re-dial last number dialed |
|---------------+--------------------------------------------|
| S32=4 | Dial stored number at memory location 0 |
|---------------+--------------------------------------------|
| S32=5 | Auto-answer toggle on/off |
|---------------+--------------------------------------------|
| S32=6 | Reset modem |
|---------------+--------------------------------------------|
| S32=7 | Remote digital loopback initiated |
|---------------+--------------------------------------------|
| S32=8 | Busy out phone line toggle |
|---------------+--------------------------------------------|
| í S32=9 | Execute stored command string |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.21 - HANDSHAKE |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S29=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 20 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | .1 second |
|--------------+---------------------------------------------|
| Description: | Sets the length of handshake time for V.21. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.32 - HANDSHAKE |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S28=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 8 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | .1 second |
|--------------+---------------------------------------------|
| Description: | Sets the length of handshake time for V.32. |