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# AT&T PARADYNE
DATAPORT 3710
Modem Type Data (synchronous/asynchronous)/Fax
Maximum Data Rate 14.4Kbps
Maximum Fax Rate 14.4Kbps
Data Bus External
Fax Class Class I & II
Data Modulation Bell 103A/212A
Protocol
ITU-T V.21, V.22, V.22bis, V.23, V.32,
V.32bis
Fax Modulation ITU-T V.17, V.21CH2, V.27ter, V.29
Protocol
Error MNP5, V.42, V.42bis
Correction/Compression
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| Line out | CN1 | DC power | CN4 |
|------------------+----------+-------------------+----------|
| Line in | CN2 | Power switch | SW1 |
|------------------+----------+-------------------+----------|
| RS-232/422 | CN3 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAGNOSTIC LED(S) |
|------------------------------------------------------------|
| LED | Color | Status | Condition |
|-----+-------+--------+-------------------------------------|
| EC | Red | On | Error correction enabled |
|-----+-------+--------+-------------------------------------|
| EC | Red | Off | Error correction disabled |
|-----+-------+--------+-------------------------------------|
| HS | Red | On | Modem is operating at highest |
| | | | configured speed |
|-----+-------+--------+-------------------------------------|
| HS | Red | Off | Modem is operating at less than |
| | | | highest configured speed |
|-----+-------+--------+-------------------------------------|
| CD | Red | On | Carrier signal detected |
|-----+-------+--------+-------------------------------------|
| CD | Red | Off | Carrier signal not detected |
|-----+-------+--------+-------------------------------------|
| OH | Red | On | Modem is off-hook |
|-----+-------+--------+-------------------------------------|
| OH | Red | Off | Modem is on-hook |
|-----+-------+--------+-------------------------------------|
| RD | Red | On | Modem is receiving data |
|-----+-------+--------+-------------------------------------|
| RD | Red | Off | Modem is not receiving data |
|-----+-------+--------+-------------------------------------|
| SD | Red | On | Modem is transmitting data |
|-----+-------+--------+-------------------------------------|
| SD | Red | Off | Modem is not transmitting data |
|-----+-------+--------+-------------------------------------|
| TR | Red | On | DTR signal is high |
|-----+-------+--------+-------------------------------------|
| TR | Red | Off | DTR signal is low |
|-----+-------+--------+-------------------------------------|
| MR | Red | On | DSR signal is high |
|-----+-------+--------+-------------------------------------|
| MR | Red | Off | DSR signal is low |
+------------------------------------------------------------+
Proprietary AT Command Set
+------------------------------------------------------------+
| AT COMMAND RESPONSE |
|------------------------------------------------------------|
| Type: | Regtster |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S84=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S84=0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Sets the response to AT commands. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » S84=0 | Normal operation |
|--------------+---------------------------------------------|
| S84=1 | Execute valid commands, suppress error |
| | codes. |
|--------------+---------------------------------------------|
| S84=2 | Ignore configuration commands, always |
| | return OK error code. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AUTO BAUD |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S78=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S78=0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Allows modem to connect at remote modem’s |
| | modulation during V.32bis connection. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » S78=0 | Auto baud enabled. |
|--------------+---------------------------------------------|
| S78=1 | Auto baud disabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AUTO-RELIABLE TIME BUFFER CONFIGURATION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Cn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \C1 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Controls the handling of incoming data |
| | during auto-reliable time period. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » \CO | Data is discarded. |
|--------------+---------------------------------------------|
| \C1 | Data is buffered. |
|--------------+---------------------------------------------|
| \C2 | Data is discarded, resets to \C1 on receipt |
| | of autoreliable fallback character. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AUTO-RELIABLE FALLBACK CHARACTER |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %An [cmds] |
|--------------+---------------------------------------------|
| Example: | AT%A20<CR> |
|--------------+---------------------------------------------|
| Default: | 13 |
|--------------+---------------------------------------------|
| Range: | 0-127 |
|--------------+---------------------------------------------|
| Unit: | ASCII |
|--------------+---------------------------------------------|
| Description: | Sets the character used as the |
| | auto-reliable fallback character. %A0 will |
| | disable this function. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BREAK TYPE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Kn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \K5 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Selects response to DTE break command. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \K0 | Send break, clear buffer, enter command |
| | mode. |
|--------------+---------------------------------------------|
| \K1 | Send break, clear buffer. |
|--------------+---------------------------------------------|
| \K2 | Send break, send data, enter command mode. |
|--------------+---------------------------------------------|
| \K3 | Send break. send data. |
|--------------+---------------------------------------------|
| \K4 | Send data, send break, enter command mode. |
|--------------+---------------------------------------------|
| » \K5 | Send data, send break. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CELLULAR ENHANCEMENTS |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S91=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S91=0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Configures modem to enhanced cellular mode |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » S91=0 | Disabled |
|--------------+---------------------------------------------|
| S91=1 | Enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CD SIGNAL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Cn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT &C3 &B0<CR> |
|--------------+---------------------------------------------|
| Description: | Configures the behavior of the carrier |
| | detect signal. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » &C0 | CD forced high. |
|--------------+---------------------------------------------|
| &C1 | CD normal. |
|--------------+---------------------------------------------|
| &C2 | Blink on disconnect. |
|--------------+---------------------------------------------|
| &C3 | CD follows DTR. |
|--------------+---------------------------------------------|
| &C4 | Simulated control carrier. |
|--------------+---------------------------------------------|
| &C5 | CD follows DTR, forced low on disconnect. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| COMPRESSION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT %Cn |
|--------------+---------------------------------------------|
| Example: | AT &B0 %C1 &I2<CR> |
|--------------+---------------------------------------------|
| Description: | Selects V.42 and MNP data compression. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %C0 | Data compression disabled. |
|--------------+---------------------------------------------|
| » %C1 | Data compression enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONNECT MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Nn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \N1 DT555-1212<CR> |
|--------------+---------------------------------------------|
| Description: | Sets connect mode. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \N0 | Normal mode enabled. |
|--------------+---------------------------------------------|
| \N1 | Direct mode enabled. |
|--------------+---------------------------------------------|
| \N2 | MNP mode only enabled. |
|--------------+---------------------------------------------|
| \N3 | MNP mode with fallback to normal mode |
| | enabled. |
|--------------+---------------------------------------------|
| \N4 | LAP-M mode only enabled. |
|--------------+---------------------------------------------|
| \N5 | LAP-M mode with fallback to normal mode |
| | enabled. |
|--------------+---------------------------------------------|
| \N6 | V.42/MNP only enabled. |
|--------------+---------------------------------------------|
| » \N7 | V.42/MNP with fallback to normal mode |
| | enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONNECTION SPEED UPPER LIMIT |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Bn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT %B14400<CR> |
|--------------+---------------------------------------------|
| Description: | Selects the current DCE speed. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %B300 | Select V.21 or Bell103 at 300bps speed. |
|--------------+---------------------------------------------|
| %B1200 | Select V.22,V.23 or Bell 212A at 1200bps |
| | speed. |
|--------------+---------------------------------------------|
| %B2400 | Select V.22 at 2400bps speed. |
|--------------+---------------------------------------------|
| %B4800 | Select v.32/V.32bis at 4800bps speed. |
|--------------+---------------------------------------------|
| %B7200 | Select V.32bis at 7200bps speed. |
|--------------+---------------------------------------------|
| %B9600 | Select V.32bis/V.32 at 9600bps speed. |
|--------------+---------------------------------------------|
| %B12000 | Select V.32bis at 12Kbps speed. |
|--------------+---------------------------------------------|
| » %B14400 | Select V.32bis at 14.4Kbps speed. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CTS SIGNAL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Dn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \D0<CR> |
|--------------+---------------------------------------------|
| Description: | Selects the function of the CTS signal. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » \D0 | CTS forced high. |
|--------------+---------------------------------------------|
| \D1 | CTS normal. |
|--------------+---------------------------------------------|
| \D2 | CTS interrupted for 2 seconds on |
| | disconnect. |
|--------------+---------------------------------------------|
| \D3 | CTS follows DTR. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DISCONNECT IMMEDIATELY |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S85=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S85=0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Disconnect immediately on receipt of |
| | disconnect signal from DTE or diagnostic |
| | control panel. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » S85=0 | Disabled. |
|--------------+---------------------------------------------|
| S85=1 | Enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FAX DISABLE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S79=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S79=1 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Enables V.17 fax capability |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| S79=0 | Disable |
|--------------+---------------------------------------------|
| » S79=1 | Enable |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Gn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \G1 &K3<CR> |
|--------------+---------------------------------------------|
| Description: | Selects modem port flow control. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » \G0 | Flow control disabled. |
|--------------+---------------------------------------------|
| \G1 | Flow control enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL TYPE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Qn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \Q5<CR> |
|--------------+---------------------------------------------|
| Description: | Sets type of flow control used by modem. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \Q0 | Flow control disabled. |
|--------------+---------------------------------------------|
| \Q1 | Bidirectional XON/XOFF flow control |
| | enabled. |
|--------------+---------------------------------------------|
| \Q2 | CTS flow control by DCE enabled. |
|--------------+---------------------------------------------|
| » \Q3 | Bidirectional CTS/RTS flow control enabled. |
|--------------+---------------------------------------------|
| \Q4 | XON/XOFF flow control by DCE enabled. |
|--------------+---------------------------------------------|
| \Q5 | XON/XOFF flow control by DTE enabled. |
|--------------+---------------------------------------------|
| \Q6 | RTS flow control by DTE enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INACTIVITY TIMER |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Tn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT\T20<CR> |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | 1 minute |
|--------------+---------------------------------------------|
| Description: | Sets the length of time that the modem does |
| | not receive information before it |
| | disconnects. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LAP-M FRAME SIZE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \An [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \A3 %C1<CR> |
|--------------+---------------------------------------------|
| Description: | Sets the maximum frame size for V.42 and |
| | MNP connections. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \A0 | Maximum frame size is 64 |
|--------------+---------------------------------------------|
| \A1 | Maximum frame size is 128 |
|--------------+---------------------------------------------|
| \A2 | Maximum frame size is 192 |
|--------------+---------------------------------------------|
| » \A3 | Maximum frame size is 256 |
|--------------+---------------------------------------------|
| \A4 | Maximum frame size is 32 |
|--------------+---------------------------------------------|
| \A5 | Maximum frame size is 16 |
|------------------------------------------------------------|
| Note: Maximum V.42 frame size is 128. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LAP-M FRAME WINDOW |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S89=n [cmds] |
|--------------+---------------------------------------------|
| Example: | ATS89=6<CR> |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 1-9 |
|--------------+---------------------------------------------|
| Unit: | 1 frame (beginning with 0=6 frames) |
|--------------+---------------------------------------------|
| Description: | Sets the number of frames used in V.42 and |
| | V.42bis transmissions |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LINE SPEED |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S41=n [cmds] |
|--------------+---------------------------------------------|
| Example: | ATS41=6<CR> |
|--------------+---------------------------------------------|
| Default: | 1 |
|--------------+---------------------------------------------|
| Description: | Sets maximum line speed |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » S41=1 | 14.4Kbps V.32bis |
|--------------+---------------------------------------------|
| S41=2 | 12.0Kbps V.32bis |
|--------------+---------------------------------------------|
| S41=3 | 9600bps V.32bis, V.32 |
|--------------+---------------------------------------------|
| S41=4 | 7200bps V.32bis |
|--------------+---------------------------------------------|
| S41=5 | 4800bps V.32bis, V.32 |
|--------------+---------------------------------------------|
| S41=6 | 2400bps V.22bis |
|--------------+---------------------------------------------|
| S41=7 | 1200bps V.22 |
|--------------+---------------------------------------------|
| S41=8 | 1200bps 212A |
|--------------+---------------------------------------------|
| S41=10 | 0-300bps V21 |
|--------------+---------------------------------------------|
| S41=11 | 0-300bps 103j |
|--------------+---------------------------------------------|
| S41=12 | 1200/75bps V.23 |
|--------------+---------------------------------------------|
| S41=13 | 75/1200bps V.23 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LOCK SERIAL PORT |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S90=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S90=0<CR> |
|--------------+---------------------------------------------|
| Description: | Sets operation of serial port speed. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| S90=0 | Disabled. |
|--------------+---------------------------------------------|
| S90=1 | Serial speed follows connect speed. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TRANSMISSION LEVEL |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &In [cmds] |
|--------------+---------------------------------------------|
| Example: | AT &I26 &W<CR> |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | -10dBm to -.25dBm |
|--------------+---------------------------------------------|
| Unit: | -1 dBm |
|--------------+---------------------------------------------|
| Description: | Sets the signal level for transmission |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TRANSMISSION LEVEL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &J0 [cmds] |
|--------------+---------------------------------------------|
| Example: | AT &J0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Sets permissive mode |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.32bis AUTO-RETRAIN |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S76=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S76=0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Selects action the modem will take during |
| | bad line quality on 32bis connection. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » S76=0 | Auto retrain enabled. |
|--------------+---------------------------------------------|
| S76=1 | Auto retrain disabled. |
|--------------+---------------------------------------------|
| S76=2 | Auto retrain started at 4800bps. |
|--------------+---------------------------------------------|
| S76=3 | Auto retrain started at 9600bps |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.32bis TRAIN |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S43=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S43=0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Sets train length. Cellular setting is |
| | short. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » S43=0 | Long |
|--------------+---------------------------------------------|
| S43=1 | Short |
+------------------------------------------------------------+
+------------------------------------------------------------+
| XON/XOFF PASS-THROUGH |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Xn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \X7 O<CR> |
|--------------+---------------------------------------------|
| Description: | Selects whether XON/XOFF signals are sent |
| | to remote modem. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » \X0 | XON/XOFF signals trapped by local modem. |
|--------------+---------------------------------------------|
| \X1 | XON/XOFF passed through local modem. |
+------------------------------------------------------------+