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# AT&T PARADYNE
COMSPHERE 3820PLUS
Modem Type Data (synchronous/asynchronous)
Maximum Data Rate 28.8Kbps
Data Bus External
Data Modulation AT&T V.32terbo, V.34, Point to Point
Protocol diagnostic, Trellis Multipoint
Bell 103A/212A
ITU-T V.21, V.22, V.22bis, V23,
V.27bis, V.27ter, V.29, V.32, V.33,
V.32bis, V.34
Error MNP5, V.42, V.42bis
Correction/Compression
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|----------------------+----------+---------------+----------|
| Switched line | CN1 | Power switch | SW1 |
|----------------------+----------+---------------+----------|
| Leased line | CN2 | Scroll left | CN6 |
|----------------------+----------+---------------+----------|
| RS-232/422 | CN3 | Scroll right | CN7 |
|----------------------+----------+---------------+----------|
| DC power | CN4 | Go up one | CN8 |
| | | level | |
|----------------------+----------+---------------+----------|
| Network Management | CN5 | Go to top | CN9 |
| (proprietary) | | level | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAGNOSTIC LED(S) |
|------------------------------------------------------------|
| LED | Color | Status | Condition |
|----------+--------+----------+-----------------------------|
| PWR | Green | On | Power is on |
|----------+--------+----------+-----------------------------|
| PWR | Green | Off | Power is off |
|----------+--------+----------+-----------------------------|
| ALRM | Red | Blinking | Major alarm detected in a |
| | | | remote 392x series modem |
|----------+--------+----------+-----------------------------|
| ALRM | Red | Off | Normal operation |
|----------+--------+----------+-----------------------------|
| DIAG | Green | On | Modem is receiving |
| | | | diagnostic messages |
|----------+--------+----------+-----------------------------|
| DIAG | Green | Off | Modem is not receiving |
| | | | diagnostic messages |
|----------+--------+----------+-----------------------------|
| DTR/108 | Green | On | DTR signal is high |
|----------+--------+----------+-----------------------------|
| DTR/108 | Green | Off | DTR signal is low |
|----------+--------+----------+-----------------------------|
| RTS/105 | Green | On | RTS signal is high |
|----------+--------+----------+-----------------------------|
| RTS/105 | Green | Off | RTS signal is low |
|----------+--------+----------+-----------------------------|
| CTS/106 | Green | On | CTS signal is high |
|----------+--------+----------+-----------------------------|
| CTS/106 | Green | Off | CTS signal is low |
|----------+--------+----------+-----------------------------|
| TXD/103 | Green | On | Modem is receiving data |
| | | | from DTE |
|----------+--------+----------+-----------------------------|
| TXD/103 | Green | Off | Modem is not receiving data |
| | | | from DTE |
|----------+--------+----------+-----------------------------|
| LSD/109 | Green | On | Carrier signal detected |
|----------+--------+----------+-----------------------------|
| LSD/109 | Green | Off | Carrier signal not detected |
|----------+--------+----------+-----------------------------|
| RXD/104 | Green | On | Modem is transmitting data |
| | | | to DTE |
|----------+--------+----------+-----------------------------|
| RXD/104 | Green | Off | Modem is not transmitting |
| | | | data to DTE |
|----------+--------+----------+-----------------------------|
| SQ | Yellow | Blinking | Line signal is degraded or |
| | | | data path is being blocked |
|----------+--------+----------+-----------------------------|
| SQ | Yellow | Off | Normal operation |
|----------+--------+----------+-----------------------------|
| TEST/142 | Yellow | On | Test connection established |
|----------+--------+----------+-----------------------------|
| TEST/142 | Yellow | Blinking | Modem is upgrading firmware |
|----------+--------+----------+-----------------------------|
| TEST/142 | Yellow | Off | No test connection |
| | | | established |
|----------+--------+----------+-----------------------------|
| RATE | Yellow | On | Modem is connected at less |
| | | | than configured speed |
|----------+--------+----------+-----------------------------|
| RATE | Yellow | Off | Modem is connected at |
| | | | configured speed |
|----------+--------+----------+-----------------------------|
| DIAL | Yellow | On | Modem is establishing a |
| | | | switched line connection |
|----------+--------+----------+-----------------------------|
| DIAL | Yellow | Blinking | Switched line connection |
| | | | established |
|----------+--------+----------+-----------------------------|
| DIAL | Yellow | Off | No switched line connection |
+------------------------------------------------------------+
Proprietary AT Command Set
+------------------------------------------------------------+
| ANTISTREAMING |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S72=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S72=0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Selects antistreaming option |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í 72=0 | Disabled |
|--------------+---------------------------------------------|
| í S72=1 | 10 seconds |
|--------------+---------------------------------------------|
| í S72=2 | 30 seconds |
|--------------+---------------------------------------------|
| í S72=3 | 1 minute |
|--------------+---------------------------------------------|
| í S72=4 | 2 minutes |
|--------------+---------------------------------------------|
| í S72=5 | 3 minutes |
|--------------+---------------------------------------------|
| í S72=6 | 5 minutes |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AT COMMAND RESPONSE |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S84=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S84=0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Sets the response to AT commands. |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í S84=0 | Normal operation |
|--------------+---------------------------------------------|
| í S84=1 | Execute valid commands, suppress error |
| | codes. |
|--------------+---------------------------------------------|
| í 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. |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í S78=0 | Auto baud enabled. |
|--------------+---------------------------------------------|
| í S78=1 | Auto baud disabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AUTO-RELIABLE FALLBACK CHARACTER |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %An [cmds] |
|--------------+---------------------------------------------|
| Example: | AT%A20<CR> |
|--------------+---------------------------------------------|
| Default: | 15 |
|--------------+---------------------------------------------|
| Range: | 0-127 |
|--------------+---------------------------------------------|
| Unit: | ASCII |
|--------------+---------------------------------------------|
| Description: | Sets the character used as the |
| | auto-reliable fallback character. %A0 will |
| | disable this function. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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. |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í \CO | Data is discarded. |
|--------------+---------------------------------------------|
| í \C1 | Data is buffered. |
|--------------+---------------------------------------------|
| í \C2 | Data is discarded, resets to \C1 on receipt |
| | of autoreliable fallback character. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BREAK TYPE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Kn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \K5 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Selects response to DTE break command. |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í \K0 | Send break, clear buffer, enter command |
| | mode. |
|--------------+---------------------------------------------|
| í \K1 | Send break, clear buffer |
|--------------+---------------------------------------------|
| í \K2 | Send break, send data, enter command mode. |
|--------------+---------------------------------------------|
| í \K3 | Send break. send data, |
|--------------+---------------------------------------------|
| í \K4 | Send data, send break, enter command mode. |
|--------------+---------------------------------------------|
| í \K5 | Send data, send break. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BUFFER REDUCED ASYNCRONOUS |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S97=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S97=0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Limits asynchronous buffer size to a 20 |
| | character maximum |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í S97=0 | Buffer size limit disabled. |
|--------------+---------------------------------------------|
| í S97=1 | Buffer size limit enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BUSY OUT ON LOW DTR |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S69=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S69=0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Modem goes off hook on low DTR (use only in |
| | PBX mode). |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í S69=0 | Busy out disabled. |
|--------------+---------------------------------------------|
| í S69=1 | Busy out enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CALLBACK SECURITY |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S67=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S67=0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Enables callback security option |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í S67=0 | Disabled |
|--------------+---------------------------------------------|
| í S67=1 | Enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CD SIGNAL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Cn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT &C3 I4 <CR> |
|--------------+---------------------------------------------|
| Description: | Configures the behavior of the carrier |
| | detect signal. |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í &C0 | CD forced high. |
|--------------+---------------------------------------------|
| í &C1 | CD normal. |
|--------------+---------------------------------------------|
| í &C2 | CD forced high except during handshaking |
| | and disconnecting. |
|--------------+---------------------------------------------|
| í &C3 | CD follows DTR |
|--------------+---------------------------------------------|
| í &C4 | CD follows remote RTS signal. |
|--------------+---------------------------------------------|
| í &C5 | CD Follows DTR signal. Forced low on |
| | disconnect. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CELLULAR ENHANCEMENTS |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S91=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S91=0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Configures modem to enhanced cellular mode |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í S91=0 | Disabled |
|--------------+---------------------------------------------|
| í S91=1 | Enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| COMPRESSION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT %Cn |
|--------------+---------------------------------------------|
| Example: | AT I2 %C1 L3 <CR> |
|--------------+---------------------------------------------|
| Description: | Selects data compression. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %C0 | Data compression disabled. |
|--------------+---------------------------------------------|
| %C1 | Data compression enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CTS SIGNAL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Dn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \D0<CR> |
|--------------+---------------------------------------------|
| Description: | Selects the function of the CTS signal. |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í \D0 | CTS forced high. |
|--------------+---------------------------------------------|
| í \D1 | CTS normal. |
|--------------+---------------------------------------------|
| í \D2 | CTS interrupted for 2 seconds on |
| | disconnect. |
|--------------+---------------------------------------------|
| í \D3 | CTS follows DTR. |
|--------------+---------------------------------------------|
| í \D4 | CTS follows RTS |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DISCONNECT BUFFER DELAY |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S49=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S49=0<CR> |
|--------------+---------------------------------------------|
| Default: | 10 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | 1 second |
|--------------+---------------------------------------------|
| Description: | Selects how long the modem will continue to |
| | transmit data in transmit buffer after |
| | receipt of disconnect signal |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DISCONNECT IMMEDIATELY |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| 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. |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í S85=0 | Disabled. |
|--------------+---------------------------------------------|
| í S85=1 | Enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DISCONNECT ON LOSS OF CURRENT |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S65=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S65=0<CR> |
|--------------+---------------------------------------------|
| Description: | Causes the modem to disconnect if the |
| | telephone line’s current drops. |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í S65=0 | Disconnect after 8ms if current is lost. |
|--------------+---------------------------------------------|
| í S65=1 | Disconnect after 90ms if current is lost. |
|--------------+---------------------------------------------|
| í S65=2 | Disabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DTE RATE CONTROL |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S61=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S61=0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Sets result of DTE CT111 rate control |
| | signal. |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í S61=0 | Disabled. |
|--------------+---------------------------------------------|
| í S61=1 | Fallback 1. |
|--------------+---------------------------------------------|
| í S61=2 | Fallback 2. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Gn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \G1 &K3<CR> |
|--------------+---------------------------------------------|
| Description: | Selects modem port flow control. |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í \G0 | Flow control disabled. |
|--------------+---------------------------------------------|
| í \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. |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í \Q0 | Flow control disabled. |
|--------------+---------------------------------------------|
| í \Q1 | Bidirectional XON/XOFF flow control |
| | enabled. |
|--------------+---------------------------------------------|
| Í \Q2 | CTS flow control by DCE enabled. |
|--------------+---------------------------------------------|
| í \Q3 | Bidirectional CTS/RTS flow control enabled. |
|--------------+---------------------------------------------|
| í \Q4 | XON/XOFF flow control by DTE enabled. |
|--------------+---------------------------------------------|
| í \Q5 | XON/XOFF flow control by DCE enabled. |
|--------------+---------------------------------------------|
| í \Q6 | RTS flow control by DTE enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INACTIVITY TIMER |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| 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. |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í \A0 | Maximum frame size is 64 |
|--------------+---------------------------------------------|
| í \A1 | Maximum frame size is 128 |
|--------------+---------------------------------------------|
| í \A2 | Maximum frame size is 192 |
|--------------+---------------------------------------------|
| í \A3 | Maximum frame size is 256 |
|--------------+---------------------------------------------|
| í \A4 | Maximum frame size is 32 |
|--------------+---------------------------------------------|
| í \A5 | Maximum frame size is 16 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LEASED LINE AUTO-RETRAIN |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S82=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S82=0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Allows modem to retrain to compensate for |
| | bad line quality in V.32bis or V.32terbo |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í S82=0 | Retrain enabled. |
|--------------+---------------------------------------------|
| í S82=1 | Retrain disabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LEASED LINE BACKUP SPECIAL STANDBY |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S98=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S98=0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Allows leased line dial backup using a |
| | third modem. |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í S98=0 | Disabled |
|--------------+---------------------------------------------|
| í S98=1 | Enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LEASED LINE DIAL BACKUP |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S46=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S46=0 &F1<CR> |
|--------------+---------------------------------------------|
| Description: | Automatically establishes switched line |
| | connection if leased line fails |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í S46=0 | Disabled. |
|--------------+---------------------------------------------|
| í S46=1 | Enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LEASED LINE BACKUP RECOVERY DELAY |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S47=n &F1 [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S47=0 &F1 <CR> |
|--------------+---------------------------------------------|
| Description: | After leased line failure, modem attempts |
| | to reconnect after specified delay. |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í S46=0 | Disabled. |
|--------------+---------------------------------------------|
| í S46=1 | 15 minute delay. |
|--------------+---------------------------------------------|
| í S46=2 | 60 minute delay. |
|--------------+---------------------------------------------|
| í S46=3 | 4 hour delay |
|--------------+---------------------------------------------|
| í S46=4 | 2 minute delay (test) |
|--------------+---------------------------------------------|
| í S46=6 | Adv 30 minutes |
|--------------+---------------------------------------------|
| í S46=5 | Adv 15 minutes |
|--------------+---------------------------------------------|
| í S46=7 | Adv 60 minutes |
|--------------+---------------------------------------------|
| í S46=8 | Adv 2 minutes (test) |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LEASED LINE DISCONNECT LEVEL |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S48=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S48=0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Sets level carrier signal drops to before |
| | disconnect. |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í S48=0 | Disconnect at -43dBm |
|--------------+---------------------------------------------|
| í S48=1 | Disconnect at -26dBm |
|--------------+---------------------------------------------|
| í S48=2 | Disconnect at -33dBm |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LEASED LINE SPEED |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S44=n [cmds] |
|--------------+---------------------------------------------|
| Example: | ATS44=6<CR> |
|--------------+---------------------------------------------|
| Default: | 27 |
|--------------+---------------------------------------------|
| Description: | Sets maximum leased line speed |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í S44=1 | 14.4Kbps V.32bis |
|--------------+---------------------------------------------|
| í S44=2 | 12.0Kbps V.32bis |
|--------------+---------------------------------------------|
| í S44=3 | 9600bps V.32 |
|--------------+---------------------------------------------|
| í S44=4 | 7200bps V.32bis |
|--------------+---------------------------------------------|
| í S44=5 | 4800bps V.32 |
|--------------+---------------------------------------------|
| í S44=6 | 2400bps V.22bis |
|--------------+---------------------------------------------|
| í S44=11 | 14.4Kbps V.33 |
|--------------+---------------------------------------------|
| í S44=12 | 12.0KbpsV.33 |
|--------------+---------------------------------------------|
| í S44=13 | 9600bps V.29 |
|--------------+---------------------------------------------|
| í S44=14 | 7200bps V.29 |
|--------------+---------------------------------------------|
| í S44=15 | 4800bps V.29 |
|--------------+---------------------------------------------|
| í S44=16 | 4800bps V.27bis |
|--------------+---------------------------------------------|
| í S44=17 | 2400bps V.27bis |
|--------------+---------------------------------------------|
| í S44=18 | 19.2Kbps V.32terbo |
|--------------+---------------------------------------------|
| í S44=19 | 16.8Kbps V.32terbo |
|--------------+---------------------------------------------|
| í S44=20 | 19.2Kbps TMp |
|--------------+---------------------------------------------|
| í S44=21 | 14.4Kbps TMp |
|--------------+---------------------------------------------|
| í S44=22 | 9600bps TMp |
|--------------+---------------------------------------------|
| í S44=23 | 7200bps TMp |
|--------------+---------------------------------------------|
| í S44=24 | 4800bps TMp |
|--------------+---------------------------------------------|
| í S44=25 | 2400bps TMp |
|--------------+---------------------------------------------|
| í S44=26 | 33.6Kbps |
|--------------+---------------------------------------------|
| í S44=27 | 31.2Kbps |
|--------------+---------------------------------------------|
| í S44=28 | 28.8Kbps V.34 |
|--------------+---------------------------------------------|
| í S44=29 | 26.4Kbps V.34 |
|--------------+---------------------------------------------|
| í S44=30 | 24.0Kbps V.34 |
|--------------+---------------------------------------------|
| í S44=31 | 21.6Kbps V.34 |
|--------------+---------------------------------------------|
| í S44=32 | 19.2Kbps V.34 |
|--------------+---------------------------------------------|
| í S44=33 | 16.8Kbps V.34 |
|--------------+---------------------------------------------|
| í S44=34 | 14.4Kbps V.34 |
|--------------+---------------------------------------------|
| í S44=35 | 12.0Kbps V.34 |
|--------------+---------------------------------------------|
| í S44=36 | 9600bps V.34 |
|--------------+---------------------------------------------|
| í S44=37 | 7200bps V.34 |
|--------------+---------------------------------------------|
| í S44=38 | 4800bps V.34 |
|--------------+---------------------------------------------|
| í S44=39 | 2400bps V.34 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LEASED LINE TRANSMISSION LEVEL |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S45=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S45=15<CR> |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0 - 15 |
|--------------+---------------------------------------------|
| Unit: | -1 dBm |
|--------------+---------------------------------------------|
| Description: | Sets the signal level for transmission when |
| | in leased line mode. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LINE TYPE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Ln [cmds] |
|--------------+---------------------------------------------|
| Example: | AT &L0 H1 DT555-1212<CR> |
|--------------+---------------------------------------------|
| Description: | Selects line type. |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í &L0 | Switched line. |
|--------------+---------------------------------------------|
| í &L1 | 2-wire originate mode leased line. |
|--------------+---------------------------------------------|
| í &L2 | 4-wire originate mode leased line. |
|--------------+---------------------------------------------|
| í &L3 | 2-wire answer mode leased line. |
|--------------+---------------------------------------------|
| í &L4 | 4-wire answer mode leased line. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LOCAL ANALOG LOOPBACK |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S52=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S52=0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Modem executes local analog loopback on |
| | receipt of CT141 signal from DTE |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í S52=0 | Loopback disabled. |
|--------------+---------------------------------------------|
| í S52=1 | Loopback enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LOCK SERIAL PORT |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S90=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S90=0<CR> |
|--------------+---------------------------------------------|
| Description: | Sets operation of serial port speed. |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í S90=0 | Disabled. |
|--------------+---------------------------------------------|
| í S90=1 | Serial speed follows connect speed. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| NETWORK POSITION IDENTIFICATION |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S74=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S74=0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Identifies modem as either tributary or |
| | control |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í S74=0 | Identify as tributary |
|--------------+---------------------------------------------|
| í S74=1 | Identify as control |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.27bis TRAIN TIME |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S70=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S70=0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Selects length of V.27bis train time. |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í S70=0 | Short |
|--------------+---------------------------------------------|
| í S70=1 | Long |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PASSWORD REMOTE ACCESS |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S56=n [cmds] |
|--------------+---------------------------------------------|
| Example: | ATS56=06<CR> |
|--------------+---------------------------------------------|
| Default: | None |
|--------------+---------------------------------------------|
| Range: | 00-99 |
|--------------+---------------------------------------------|
| Unit: | Password digits |
|--------------+---------------------------------------------|
| Description: | Allows entry of the first two digits of |
| | remote access password. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PASSWORD REMOTE ACCESS |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S57=n [cmds] |
|--------------+---------------------------------------------|
| Example: | ATS57=06<CR> |
|--------------+---------------------------------------------|
| Default: | None |
|--------------+---------------------------------------------|
| Range: | 00-99 |
|--------------+---------------------------------------------|
| Unit: | Password digits |
|--------------+---------------------------------------------|
| Description: | Allows entry of the second two digits of |
| | remote access password. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PASSWORD REMOTE ACCESS |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S58=n [cmds] |
|--------------+---------------------------------------------|
| Example: | ATS58=06<CR> |
|--------------+---------------------------------------------|
| Default: | None |
|--------------+---------------------------------------------|
| Range: | 00-99 |
|--------------+---------------------------------------------|
| Unit: | Password digits |
|--------------+---------------------------------------------|
| Description: | Allows entry of the third two digits of |
| | remote access password. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PASSWORD REMOTE ACCESS |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S59=n [cmds] |
|--------------+---------------------------------------------|
| Example: | ATS59=06<CR> |
|--------------+---------------------------------------------|
| Default: | None |
|--------------+---------------------------------------------|
| Range: | 00-99 |
|--------------+---------------------------------------------|
| Unit: | Password digits |
|--------------+---------------------------------------------|
| Description: | Allows entry of the fourth two digits of |
| | remote access password. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REMOTE CONFIGURATION |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S55=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S55=0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Allows remote configuration by 3800 series |
| | modem. |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í S55=0 | Remote configuration enabled. |
|--------------+---------------------------------------------|
| í S55=1 | Remote configuration disabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REMOTE DIGITAL LOOPBACK |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S51=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S51=0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Modem executes remote digital loopback on |
| | receipt of CT140 signal from DTE |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í S51=0 | Loopback disabled. |
|--------------+---------------------------------------------|
| í S51=1 | Loopback enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REPORT INFORMATION |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] In [cmds] |
|--------------+---------------------------------------------|
| Example: | AT I1 O<CR> |
|--------------+---------------------------------------------|
| Description: | Displays modem properties. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| I0 | Reports product code. |
|--------------+---------------------------------------------|
| I1 | Reports firmware 3 digit version number. |
|--------------+---------------------------------------------|
| I2 | Performs EPROM check |
+------------------------------------------------------------+
+------------------------------------------------------------+
| STORED PROFILE |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S88=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S88=0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Loads stored profile on disconnect. |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í S88=0 | Disabled. |
|--------------+---------------------------------------------|
| í S88=231 | Disabled. |
|--------------+---------------------------------------------|
| í S88=1 | Enabled. |
|--------------+---------------------------------------------|
| í S88=232 | Enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SWITCHED LINE SPEED |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S41=n [cmds] |
|--------------+---------------------------------------------|
| Example: | ATS41=6<CR> |
|--------------+---------------------------------------------|
| Default: | 24 |
|--------------+---------------------------------------------|
| Description: | Sets maximum line speed |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í S41=1 | 14.4Kbps V.32bis |
|--------------+---------------------------------------------|
| í S41=2 | 12.0Kbps V.32bis |
|--------------+---------------------------------------------|
| í S41=3 | 9600bps V.32bis |
|--------------+---------------------------------------------|
| í S41=4 | 7200bps V.32bis |
|--------------+---------------------------------------------|
| í S41=5 | 4800bps V.32bis |
|--------------+---------------------------------------------|
| í S41=6 | 2400bps V.22bis |
|--------------+---------------------------------------------|
| í S41=7 | 1200bps V.22 |
|--------------+---------------------------------------------|
| í S41=8 | 1200bps 212A |
|--------------+---------------------------------------------|
| í S41=10 | 0-300bps V21 |
|--------------+---------------------------------------------|
| í S41=11 | 0-300bps 103J |
|--------------+---------------------------------------------|
| í S41=12 | 1200/75bps V.23 |
|--------------+---------------------------------------------|
| í S41=13 | 75/1200bps V.23 |
|--------------+---------------------------------------------|
| í S41=18 | 600/75bps V.23 |
|--------------+---------------------------------------------|
| í S41=19 | 75/600bps V.23 |
|--------------+---------------------------------------------|
| í S41=20 | 19.2Kbps V.32terbo |
|--------------+---------------------------------------------|
| í S41=21 | 16.8Kbps V.32terbo |
|--------------+---------------------------------------------|
| í S41=22 | 33.6Kbps |
|--------------+---------------------------------------------|
| í S41=23 | 31.2Kbps |
|--------------+---------------------------------------------|
| í S41=24 | 28.8Kbps V.34 |
|--------------+---------------------------------------------|
| í S41=25 | 26.4Kbps V.34 |
|--------------+---------------------------------------------|
| í S41=26 | 24.0Kbps V.34 |
|--------------+---------------------------------------------|
| í S41=27 | 21.6Kbps V.34 |
|--------------+---------------------------------------------|
| í S41=28 | 19.2Kbps V.34 |
|--------------+---------------------------------------------|
| í S41=29 | 16.8Kbps V.34 |
|--------------+---------------------------------------------|
| í S41=30 | 14.4Kbps V.34 |
|--------------+---------------------------------------------|
| í S41=31 | 12.0Kbps V.34 |
|--------------+---------------------------------------------|
| í S41=32 | 9600bps V.34 |
|--------------+---------------------------------------------|
| í S41=33 | 7200bps V.34 |
|--------------+---------------------------------------------|
| í S41=34 | 4800bps V.34 |
|--------------+---------------------------------------------|
| í S41=35 | 2400bps V.34 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TRANSMISSION LEVEL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &In [cmds] |
|--------------+---------------------------------------------|
| Example: | AT &I26 &W<CR> |
|--------------+---------------------------------------------|
| Default: | Unidentified |
|--------------+---------------------------------------------|
| Range: | 0-32 |
|--------------+---------------------------------------------|
| Unit: | -1 dBm |
|--------------+---------------------------------------------|
| Description: | Sets the signal level for transmission |
|------------------------------------------------------------|
| Note: 0-9 invalid in North America. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TRELLIS MULTIPOINT TRANSMIT PREEMPHASIS |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S96=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S96=0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Compensates for high frequency attenuation |
| | with amplification |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í S96=0 | Enabled |
|--------------+---------------------------------------------|
| í S96=1 | Disabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TRELLIS MULTIPOINT TRAIN TIME |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S95=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S95=0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Selects train time from tributary to |
| | control modem. |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í S95=0 | 10 milliseconds |
|--------------+---------------------------------------------|
| í S95=1 | 20 milliseconds |
|--------------+---------------------------------------------|
| í S95=2 | 50 milliseconds |
|--------------+---------------------------------------------|
| í S95=3 | 100 milliseconds |
|--------------+---------------------------------------------|
| í S95=4 | 200 milliseconds |
|--------------+---------------------------------------------|
| í S95=5 | 300 milliseconds |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.25bis CODE SET |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S62=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S62=0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Sets coding type used in V.25bis mode. |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í S62=0 | ASCII |
|--------------+---------------------------------------------|
| í S62=1 | EBCDIC |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.25bis IDLE CHARACTER |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S63=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S63=0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Sets V.25 idle fill type |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í S63=0 | Fill character is mark. |
|--------------+---------------------------------------------|
| í S63=1 | Fill character is flag. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.25bis NEW LINE CHARACTER |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S64=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S64=0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Sets V.25 new line character. |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í S64=0 | Carriage return and line feed. |
|--------------+---------------------------------------------|
| í S64=1 | Carriage return. |
|--------------+---------------------------------------------|
| í S64=2 | Line feed. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.29 LINK TYPE |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S94=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S94=0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Selects point to point or multipoint |
| | operation |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í S94=0 | Point to point operation |
|--------------+---------------------------------------------|
| í S94=1 | Multipoint operation |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.29 RETRAIN |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S93=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S93=0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Modem transmits training sequence on |
| | receipt of training sequence |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í S93=0 | Enabled |
|--------------+---------------------------------------------|
| í S93=1 | Disabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.29 TRAIN |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S92=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S92=0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Allows retrain based on incoming data or |
| | training sequence. Required for tributary |
| | modem. |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í S92=0 | Disabled |
|--------------+---------------------------------------------|
| í S92=1 | Enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.32bis AUTO-RETRAIN |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| 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. |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í S76=0 | Auto retrain enabled. |
|--------------+---------------------------------------------|
| í S76=1 | Auto retrain disabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.32bis TRAIN |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S43=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S43=0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Sets train length for V.34, V.32terbo, |
| | V.32bis and V32. |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í S43=0 | Long |
|--------------+---------------------------------------------|
| í S43=1 | Short |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.34 SPLIT BAUD MODE |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S14=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S14=0 <CR> |
|--------------+---------------------------------------------|
| Description: | Controls V.34 split baud mode. |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í S14=0 | V.34 split baud mode enabled. |
|--------------+---------------------------------------------|
| í S14=1 | V.34 split baud mode disabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.42bis COMPRESSION CONTROL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] "Hn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT "H3 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Controls V.42bis data compression |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í "H0 | V.42bis disabled. |
|--------------+---------------------------------------------|
| í "H1 | V.42bis when transmitting enabled. |
|--------------+---------------------------------------------|
| í "H2 | V.42bis when receiving enabled. |
|--------------+---------------------------------------------|
| í "H3 | V.42bis when transmitting/receiving |
| | enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.54 DEVICE ADDRESS |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S53=n [cmds] |
|--------------+---------------------------------------------|
| Example: | ATS53=6<CR> |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0-34 |
|--------------+---------------------------------------------|
| Unit: | Device address 0= disabled |
|--------------+---------------------------------------------|
| Description: | Identifies the address of the modem in |
| | loopback test. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.54 DEVICE TYPE |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S54=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S54=0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Identifies modem’s network position. |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í S54=0 | Peripheral |
|--------------+---------------------------------------------|
| í S54=1 | Intermediate |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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. |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| í \X0 | XON/XOFF signals trapped by local modem. |
|--------------+---------------------------------------------|
| í \X1 | XON/XOFF passed through local modem. |
+------------------------------------------------------------+
Proprietary V.25bis Command Set
+------------------------------------------------------------+
| DISPLAY STORED NUMBERS |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | RLNn |
|--------------+---------------------------------------------|
| Example: | RLN2<CR> |
|--------------+---------------------------------------------|
| Description: | Display number in memory location n. If no |
| | number is given, all stored numbers will be |
| | displayed. |
+------------------------------------------------------------+