U.S. ROBOTICS, INC.
SPORTSTER VI 28.8DSVD
Card Type | Fax, Modem (asynchronous), Voice |
Chip Set | U.S. Robotics |
I/O Options | Digital SVD |
Maximum Data Rate | 28.8Kbps |
Maximum Fax Rate | 14.4Kbps |
Data Bus | 8-bit ISA |
Fax Class | Class I & II |
Data Modulation Protocol | Bell 103/212A ITU-T V.21, V.22, V.22bis, V.23, V.32, V.32bis, V.34 Rockwell V.FC |
Fax Modulation Protocol | Unidentified |
Error Correction/Compression | MNP5, V.42, V.42bis |
CONNECTIONS | ||||||
Function | Label | Function | Label | |||
Line in | CN1 | Line out | CN2 |
SERIAL PORT ADDRESS | ||||
Setting | JP1/A | JP1/B | JP1/C | JP1/D |
COM1 (3F8h) | Closed | Open | Open | Open |
í COM2 (2F8h) | Open | Closed | Open | Open |
COM3 (3E8h) | Open | Open | Closed | Open |
COM4 (2E8h) | Open | Open | Open | Closed |
INTERRUPT | |||||
Setting | JP2/A | JP2/B | JP2/C | JP2/D | JP2/E |
2 | Closed | Open | Open | Open | Open |
í 3 | Open | Closed | Open | Open | Open |
4 | Open | Open | Closed | Open | Open |
5 | Open | Open | Open | Closed | Open |
7 | Open | Open | Open | Open | Closed |
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 | ITU-T V.25 answer sequence enabled |
B1 | Bell answer sequence enabled |
ATTENTION | |
Type: | Immediate |
Format: | AT [cmds] |
Description: | Tells the modem that a command follows or use alone to test OK result code |
BAUD RATE | ||
Type: | Register | |
Format: | AT [cmds] S54=n [cmds] | |
Default: | 0 | |
Range: | 0-255 | |
Unit: | Bit-mapped | |
Description: | Controls baud rate | |
Bit | Value | Function |
0 | í 01 | 2400 baud rate enabled 2400 baud rate disabled |
1 | í 01 | 2743 baud rate enabled 2743 baud rate disabled |
2 | í 01 | 2800 baud rate enabled 2800 baud rate disabled |
3 | í 01 | 3000 baud rate enabled 3000 baud rate disabled |
4 | í 01 | 3200 baud rate enabled 3200 baud rate disabled |
5 | í 01 | 3429 baud rate enabled 3429 baud rate disabled |
6 | í 01 | Call indicate during V.34 operation enabled Call indicate during V.34 operation disabled |
7 | í 01 | V.8 during V.34 operation enabled V.8 during V.34 operation disabled |
BIT-MAPPED REGISTER S13 | ||
Format | AT [cmds] S13=n [cmds] | |
Default: | 0 | |
Range: | 0-89 | |
Unit: | Bit-mapped | |
Description: | Controls DTR reset, DTR dialing, reset dialing, and MNP3. | |
Bit | Value | Function |
0 | í 01 | DTR normal Reset on low DTR |
1, 2 | í 00 | Not used |
3 | í 01 | DTR dialing disabled DTR dialing enabled |
4 | í 01 | Reset dialing disabled Reset dialing enabled, dials number from position 0 in NVRAM |
5 | í 0 | Not used |
6 | í 01 | MNP 3 enabled MNP 3 disabled |
BIT-MAPPED REGISTER S15 | ||
Format | AT [cmds] S15=n [cmds] | |
Default: | 0 | |
Range: | 0-24 | |
Unit: | Bit-mapped | |
Description: | Controls non-error-correcting mode buffer, and MNP4. | |
Bit | Value | Function |
0 - 2 | í 0 | Not used |
3 | í 01 | Non-error-correcting mode transmit buffer set to 1.5KB Non-error-correcting mode transmit buffer set to 128 bytes |
4 | í 01 | MNP 4 enabled MNP 4 disabled |
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 9600 result codes. | |
Bit | Value | Function |
0 | í 01 | V.21 disabled V.21 enabled |
1 | í 01 | V.32 non-trellis coding disabled V.32 non-trellis coding enabled |
2 | í 01 | V.32 modulation enabled V.32 modulation disabled |
3 | í 01 | 2100Hz answer tone enabled 2100Hz answer tone disabled |
5, 4 | í 0001 10 11 | V.42 detect, LAPM and MNP enabled MNP disabled V.42 detect and LAPM disabled LAPM enabled without detection phase |
6 | í 0 | Not used |
7 | í 01 | Actual result codes displayed Force 9600 result codes |
BIT-MAPPED REGISTER S56 | ||
Format: | AT [cmds] S56=n [cmds] | |
Default: | 0 | |
Range: | 0-223 | |
Unit: | Bit-mapped | |
Description: | Controls non-linear coding, TX level deviation, pre-emphasis, pre-coding, shaping, V.34, and V.FC | |
Bit | Value | Function |
0 | í 01 | Non linear coding enabled Non linear coding disabled |
1 | í 01 | TX level deviation enabled TX level deviation disabled |
2 | í 01 | Pre-emphasis enabled Pre-emphasis disabled |
3 | í 01 | Pre-coding enabled Pre-coding disabled |
4 | í 01 | Shaping enabled Shaping disabled |
5 | í 0 | Not used |
6 | í 01 | V.34 enabled V.34 disabled |
7 | í 01 | V.FC enabled V.FC disabled |
BREAK LENGTH | |
Type: | Register |
Format: | AT [cmds] S21=n [cmds] |
Default: | 10 |
Range: | Unidentified |
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 |
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 | MNP5 data compression disabled |
COMPRESSION AND ERROR CORRECTION | ||
Format | AT [cmds] S51=n [cmds] | |
Default: | 0 | |
Range: | 0-7 | |
Unit: | Bit-mapped | |
Description: | Selects compression and error correction for specific modulations | |
Bit | Value | Function |
0 | í 01 | MNP/V.42 disabled during V.22 operation MNP/V.42 disabled during V.22 operation |
1 | í 01 | MNP/V.42 disabled during V.22bis operation MNP/V.42 disabled during V.22bis operation |
2 | í 01 | MNP/V.42 disabled during V.32bis operation MNP/V.42 disabled during V.32bis operation |
CONNECTION SPEED LOWER LIMIT | |
Type: | Configuration |
Format: | AT [cmds] &Un [cmds] |
Description: | Sets minimum required connection speed |
Note: 16.8 - 28.8bps for 28.8 models | |
Command | Function |
í &U0 | Variable |
&U1 | 300bps |
&U2 | 1200bps |
&U3 | 2400bps |
&U4 | 4800bps |
&U5 | 7200bps |
&U6 | 9600bps |
&U7 | 12Kbps |
&U8 | 14.4Kbps |
&U9 | 16.8Kbps |
&U10 | 19.2Kbps |
&U11 | 21.6Kbps |
&U12 | 24Kbps |
&U13 | 26.4Kbps |
&U14 | 28.8Kbps |
CONNECTION SPEED UPPER LIMIT | |
Type: | Configuration |
Format: | AT [cmds] &Nn [cmds] |
Description: | Sets maximum required connection speed, modem will hang up if it cannot connect. |
Note: 16.8 - 28.8bps for 28.8 models | |
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 | 19.2Kbps |
&N11 | 21.6Kbps |
&N12 | 24Kbps |
&N13 | 26.4Kbps |
&N14 | 28.8Kbps |
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 |
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 |
&D3 | Modem is initialized after DTR goes off |
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. During voice-only, if a voice/data session is needed use ATD to start. During voice/data or data-only, ADT is ignored, the connection exists. |
Command | Function |
í P | Pulse dialing enabled |
T | Tone dialing enabled |
, | Dialing paused for 2 seconds to a maximum amount of time specified in S8 register |
; | Modem returned to command state after dialing. Can only be placed at the end of the dial command. |
! | Flash function initiated |
/ | 125 ms delay before proceeding with dial string |
W | Dialing resumed following dial tone detection of second dial tone |
@ | Wait for quiet answer, then procedes to execute the rest of the dial string. |
R | Answer mode enabled; originate mode disabled following handshake initiation. |
# and * | Extended touch tone pad tones |
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 |
DIGITAL SIMULTANEOUS VOICE/DATA | ||
Type: | Configuration | |
Format: | AT [cmds] -Sxxx [cmds] | |
Description: | Controls DSVD operation the modem will operate in | |
Command | Function | |
-SSE? | Displays current digital simultaneous voice/data mode | |
í -SSE=0 | Digital simultaneous voice/data mode disabled | |
-SSE=1 | Digital simultaneous voice/data mode enabled |
DISCONNECT BUFFER DELAY | |
Type: | Register |
Format | AT [cmds] S38=n [cmds] |
Default: | 0 |
Range: | Unidentified |
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. |
DTR CHANGE THRESHOLD | |
Type: | Register |
Format | AT [cmds] S25=n [cmds] |
Default: | 5 |
Range: | Unidentified |
Unit: | .01 second |
Description: | Sets maximum time a change in the DTR signal will be ignored |
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 at 1200bps or higher |
Command | Function |
&M0 | Normal mode only |
í &M4 | Auto-detect mode |
&M5 | ARQ mode only |
ESCAPE CHARACTER RESPONSE | |
Type: | Register |
Format: | AT [cmds] S14=n [cmds] |
Description: | Controls reaction to escape character |
Command | Function |
í S14=0 | Normal operation |
S14=1 | When +++ is received, modem goes on hook, enters command state and sends NO CARRIER result code. |
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 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 values in active profile to values found in the default profile, which are READ-ONLY. | |
Command | Function | |
&F0 | Generic template | |
&F1 | Hardware flow control template | |
&F2 | Software flow control template |
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 pass-through enabled |
&I2 | XON/XOFF pass-through disabled |
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 |
&R1 | Modem ignores RTS |
í &R2 | Received data to DTE when RTS is on |
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 |
HELP SCREEN - CONTROLS | ||
Type: | Immediate | |
Format: | <Ctrl> C K or S | |
Description: | Cancel or starts/restarts help screens | |
Command | Function | |
<Ctrl> C | Display of help screen canceled | |
<Ctrl> K | Display of help screen canceled | |
<Ctrl> S | Starts/restarts help screens |
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 |
Note: H0, during voice-only, has no effect; during data-only or voice/data, disconnect data transmission and change voice from digitized to full analog. | |
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: | Unidentified |
Unit: | 1 minute |
Description: | Sets the length of time that the modem does not receive information before it disconnects. |
Note: S19=0 disables the timer. |
LIST AMPERSAND COMMANDS | |
Type: | Immediate |
Format: | AT [cmds] &$ [cmds] |
Description: | Displays ampersand (&) commands |
LIST DIAL COMMANDS | |
Type: | Immediate |
Format: | AT [cmds] D$ [cmds] |
Description: | Displays dial commands |
LIST S-REGISTERS | |
Type: | Immediate |
Format: | AT [cmds] S$ [cmds] |
Description: | Displays the S-registers |
LOCK SERIAL PORT | |
Type: | Configuration |
Format: | AT [cmds] &Bn [cmds] |
Description: | Sets operation of serial port speed |
Command | Function |
&B0 | Serial speed follows connect speed |
í &B1 | Serial speed locked |
&B2 | Serial speed locked in ARQ mode only |
MAPPING | |||||
Format: | AT [cmds] S55=n [cmds] | ||||
Default: | 0 | ||||
Range: | 0-15 | ||||
Description: | Controls all Map options | ||||
Bit | Value | Function | |||
0 | í 01 | 8S-2D map enabled 8S-2D map disabled | |||
1 | í 01 | 16S-4D map enabled 16S-4D map disabled | |||
2 | í 01 | 32S-2D map enabled 32S-2D map disabled | |||
3 | í 01 | 64S-4D map enabled 64S-4D map disabled |
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 |
ON-LINE HELP | |
Type: | Immediate |
Format: | AT [cmds] $ [cmds] |
Description: | On-line help; displays basic command list |
PHONE STATUS | ||
Type: | Immediate | |
Format: | AT [cmds] -SHP=? [cmds] | |
Description: | Displays the status of the phone connected to the ‘Phone’ jack | |
Value | Meaning | |
0 | On-hook (hung-up) | |
1 | Off-hook (picked-up) |
POWER-UP/HARD RESET CONFIGURATIONS | |
Type: | Configuration |
Format: | AT [cmds] Yn [cmds] |
Description: | On power-up modem uses default profiles |
Command | Function |
í Y0 | Use default setting 0 saved in non-volatile RAM |
Y1 | Use default setting 1 saved in non-volatile RAM |
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) |
REPEAT PREVIOUS COMMAND | |
Type: | Immediate |
Format: | A/ |
Description: | Repeats previous command, mainly used for re-dial |
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 4-digit product code |
I1 | Reports ROM checksum |
I2 | Reports RAM checksum |
I3 | Reports product type |
I4 | Reports current command settings |
I5 | Reports NVRAM settings |
I6 | Reports link diagnostics |
I7 | Reports product configuration |
RESULT CODES | |
Type: | Configuration |
Format: | AT [cmds] Qn [cmds] |
Description: | Enables modem to send result codes to the DTE |
Command | Function |
í 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 |
SELECT CALL PROGRESS RESULT CODES | |
Type: | Configuration |
Format: | AT [cmds] Xn [cmds] |
Description: | Enables selection of tone detection and associated result code format options |
Command | Function |
X0 | Busy and dial tone detection disabled; result codes 0-4 enabled. |
X1 | Busy and dial tone detection disabled; result codes 0-5, 10-107 enabled |
X2 | Busy tone detection disabled, dial tone detection enabled; result codes 0-6, 10-107 enabled; also adaptive dialing, wait for second dial tone, and fast dialing enabled. |
X3 | Busy tone detection enabled, dial tone detection disabled; result codes 0-5, 7-107 enabled; also adaptive dialing, and wait for answer enabled. |
X4 | Busy and dial tone detection enabled; result codes 0-107 enabled; also adaptive dialing, wait for second dial tone, wait for answer, and fast dialing enabled. |
Note: Valid numeric result codes; 0-8, 10, 13, 18, 20, 21, 25, 43, 85, 91, 99, 103, and 107. |
SOFT RESET | |
Type: | Immediate |
Format: | AT [cmds] Zn [cmds] |
Description: | Restores modem profiles previously saved in non-volatile RAM |
Command | Function |
í Z0 | Restore setting used by ATY command |
Z1 | Restore setting 0 |
Z2 | Restore setting 1 |
Z3 | Restore factory setting 0 (AT&F0) |
Z4 | Restore factory setting 1 (AT&F1) |
Z5 | Restore factory setting 2 (AT&F2) |
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. |
SPEAKER VOLUME | |
Type: | Configuration |
Format: | AT [cmds] Ln [cmds] |
Description: | Controls speaker volume |
Command | Function |
L0 | Low volume setting |
L1 | Low volume setting |
í L2 | Medium volume setting |
L3 | Highest volume setting |
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 | |
Note: See the section on S-registers for detailed listing of commonly used S-registers. | ||
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] &Wn [cmds] |
Description: | Writes the values for the active profile into the non-volatile RAM templates |
Command | Function |
&W0 | Write the active profile to stored profile 0 |
&W1 | Write the active profile to stored profile 1 |
STORE TELEPHONE NUMBER | ||
Type: | Configuration | |
Format: | AT [cmds] &Zn=(phone # & modifiers) | |
Description: | Writes selected telephone numbers into the non-volatile memory at location n | |
Note: The characters described in the D command are valid for use in the &Z command. | ||
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 | |
&ZL? | Displays last executed dial string |
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 | |
í &T5 | Remote digital loopback prohibited | |
&T6 | Remote digital loopback initiated | |
&T7 | Remote digital loopback w/ self-test and error detector in progress | |
&T8 | Local analog loopback w/ self-test and error detector in progress |
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 DIALING TEST | |
Type: | Register |
Format: | AT [cmds] S16=n [cmds] |
Description: | Selects the tone dialing test |
Command | Function |
í S16=0 | Tone dialing test disabled |
S16=2 | Tone dialing test enabled |
V.32 AND V.32bis MODULATIONS | ||
Format | AT [cmds] S34=n [cmds] | |
Default: | 0 | |
Range: | 0-13 | |
Unit: | Bit-mapped | |
Description: | Controls V.32 and V.32bis modulations. | |
Bit | Value | Function |
0 | í 01 | V.32bis enabled V.32bis disabled |
1 | í 0 | Not used |
2 | í 01 | Quick V.32 retrain enabled Quick V.32 retrain disabled |
3 | í 01 | V.23 modulation disabled V.23 modulation enabled |