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# XIRCOM, INC.
PS-CEM-28B2/PS-CEM-28BC/PS-CEM-28BT
Card Type Fax, Modem (synchronous/asynchronous),
Network Interface Card
Chip Set Unidentified
Cache 64KB
Network Transfer Rate 10Mbps
Maximum Modem Rate 28.8Kbps
Maximum Fax Rate 14.4Kbps
Data Bus PCMCIA Type II
Fax Class Class I & II
Data Modulation AT&T V.32terbo
Protocol
Bell 103A/212A
ITU-T V.22, V.22bis, V.23, V.32,
V.32bis, V.34
Fax Modulation ITU-T V.17, V.27ter, V.29
Protocol
Error MNP5, V.42bis
Correction/Compression
Topology Linear Bus, Star
Wiring Type Unshielded twisted pair(PS-CEM-28BC,
PS-CEM-28BT)
RG-58A/U 50ohm coaxial(PS-CEM-28B2,
PS-CEM-28BC)
Boot ROM Not available
V1804/N1435
Proprietary AT Command Set
+------------------------------------------------------------+
| AUTO-RELIABLE FALLBACK CHARACTER |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %An [cmds] |
|--------------+---------------------------------------------|
| Default: | 13 |
|--------------+---------------------------------------------|
| Range: | 0-127 |
|--------------+---------------------------------------------|
| Unit: | ASCII |
|--------------+---------------------------------------------|
| Description: | Sets the character used as the |
| | auto-reliable fallback character. %A0 will |
| | disable this function. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AUTO FALLBACK |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Gn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects auto fallback |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í %G0 | Fallback disabled |
|--------------+---------------------------------------------|
| %G1 | Fallback enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AUTO-RELIABLE TIME BUFFER |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Cn [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls the handling of incoming data |
| | during auto-reliable time period |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í \CO | Data is discarded |
|--------------+---------------------------------------------|
| \C1 | Data is buffered for 4 seconds or 200 |
| | characters |
|--------------+---------------------------------------------|
| \C2 | Data is discarded, sets to normal mode and |
| | switches to normal mode when &An received |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AUTO-RETRAIN |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT %En |
|--------------+---------------------------------------------|
| Description: | Selects auto-retrain mode |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %E0 | Auto-retrain disabled |
|--------------+---------------------------------------------|
| í %E1 | Auto-retrain enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BLACKLIST |
|------------------------------------------------------------|
| Type: | Read only |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S140? [cmds] |
|--------------+---------------------------------------------|
| Description: | Contains the maximum number of call |
| | attempts before number is blacklisted |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BREAK SEND |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Bn [cmds] |
|--------------+---------------------------------------------|
| Default: | 3 |
|--------------+---------------------------------------------|
| Range: | 1-9 |
|--------------+---------------------------------------------|
| Unit: | .1 second |
|--------------+---------------------------------------------|
| Description: | Sends break to modem |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BREAK TYPE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Kn [cmds] |
|--------------+---------------------------------------------|
| Description: | Configures action of break signal |
|------------------------------------------------------------|
| Command | Break from | Modem | Break |
| | DTE | receives \B | received |
| | | | from remote |
| | | | modem |
|---------------+---------------+--------------+-------------|
| \K0 | Online | Break sent | Buffers |
| | command mode | to remote | cleared, |
| | enabled, send | modem and | break sent |
| | no break to | buffers | to DTE |
| | remote modem | cleared | |
|---------------+---------------+--------------+-------------|
| \K1 | Break sent to | Break sent | Buffers |
| | remote modem | to remote | cleared, |
| | and buffers | modem and | break sent |
| | cleared | buffers | to DTE |
| | | cleared | |
|---------------+---------------+--------------+-------------|
| \K2 | Online | Send break | Break sent |
| | command mode | to remote | immediately |
| | enabled, send | modem | to DTE |
| | no break to | immediately | |
| | remote modem | | |
|---------------+---------------+--------------+-------------|
| \K3 | Send break to | Send break | Break sent |
| | remote modem | to remote | immediately |
| | immediately | modem | to DTE |
| | | immediately | |
|---------------+---------------+--------------+-------------|
| \K4 | Online | Send break | Break sent |
| | command mode | with | with |
| | enabled, send | transmitted | received |
| | no break to | data | data to the |
| | remote modem | | DTE |
|---------------+---------------+--------------+-------------|
| í \K5 | Send break | Send break | Break sent |
| | with | with | with |
| | transmitted | transmitted | received |
| | data | data | data to the |
| | | | DTE |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CALLING TONE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] -Cn [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls whether the DTE will allow the |
| | modem to send a calling tone |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í -C0 | Disable calling tone |
|--------------+---------------------------------------------|
| -C1 | Enable calling tone |
+------------------------------------------------------------+
+------------------------------------------------------------+
| COMPRESSION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT %Cn |
|--------------+---------------------------------------------|
| Description: | Selects MNP 5 data compression |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %C0 | Data compression disabled |
|--------------+---------------------------------------------|
| í %C1 | Data compression enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONNECT MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Nn [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets connect mode |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \N0 | Normal mode enabled |
|--------------+---------------------------------------------|
| \N2 | Auto-reliable MNP mode enabled |
|--------------+---------------------------------------------|
| í \N3 | Auto-reliable V.42 mode enabled |
|--------------+---------------------------------------------|
| \N4 | Reliable mode enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONVERT TO MNP MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Z [cmds] |
|--------------+---------------------------------------------|
| Description: | Switches to normal mode from MNP mode |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONVERT TO RELIABLE MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Y [cmds] |
|--------------+---------------------------------------------|
| Description: | Initiates reliable MNP5 mode link |
+------------------------------------------------------------+
+------------------------------------------------------------+
| COUNTRY CODES |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S133=n [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects country specific operating |
| | configuration |
|------------------------------------------------------------|
| Command | Function |
|---------------------------+--------------------------------|
| í S133=0 | USA |
|---------------------------+--------------------------------|
| S133=1 | United Kingdom |
|---------------------------+--------------------------------|
| S133=2 | Germany |
|---------------------------+--------------------------------|
| S133=3 | France |
|---------------------------+--------------------------------|
| S133=4 | Belgium |
|---------------------------+--------------------------------|
| S133=5 | The Netherlands |
+------------------------------------------------------------+
+------------------------------------------------------------+
| COUNTRY CODES (CONTINUED) |
|------------------------------------------------------------|
| S133=6 | Italy |
|------------+-----------------------------------------------|
| S133=7 | Spain |
|------------+-----------------------------------------------|
| S133=8 | Austria |
|------------+-----------------------------------------------|
| S133=9 | Switzerland |
|------------+-----------------------------------------------|
| S133=10 | Portugal |
|------------+-----------------------------------------------|
| S133=11 | Sweden |
|------------+-----------------------------------------------|
| S133=12 | Norway |
|------------+-----------------------------------------------|
| S133=13 | Denmark |
|------------+-----------------------------------------------|
| S133=14 | Finland |
|------------+-----------------------------------------------|
| S133=15 | Cyprus |
|------------+-----------------------------------------------|
| S133=16 | Czechoslovakia |
|------------+-----------------------------------------------|
| S133=17 | Greece |
|------------+-----------------------------------------------|
| S133=18 | Hungary |
|------------+-----------------------------------------------|
| S133=19 | Poland |
|------------+-----------------------------------------------|
| S133=20 | Russia |
|------------+-----------------------------------------------|
| S133=21 | Turkey |
|------------+-----------------------------------------------|
| S133=22 | Luxembourg |
|------------+-----------------------------------------------|
| S133=23 | Iceland |
|------------+-----------------------------------------------|
| S133=25 | Egypt |
|------------+-----------------------------------------------|
| S133=26 | India |
|------------+-----------------------------------------------|
| S133=27 | Kenya |
|------------+-----------------------------------------------|
| S133=28 | South Africa |
|------------+-----------------------------------------------|
| S133=29 | Morocco |
|------------+-----------------------------------------------|
| S133=48 | Abu Dhabi |
|------------+-----------------------------------------------|
| S133=49 | Australia |
|------------+-----------------------------------------------|
| S133=50 | Bangladesh |
|------------+-----------------------------------------------|
| S133=51 | China |
|------------+-----------------------------------------------|
| S133=52 | Hong Kong |
|------------+-----------------------------------------------|
| S133=53 | Indonesia |
|------------+-----------------------------------------------|
| S133=54 | Japan |
|------------+-----------------------------------------------|
| S133=55 | Korea |
|------------+-----------------------------------------------|
| S133=56 | Malaysia |
|------------+-----------------------------------------------|
| S133=57 | New Zealand |
|------------+-----------------------------------------------|
| S133=58 | Philippines |
|------------+-----------------------------------------------|
| S133=59 | Singapore |
|------------+-----------------------------------------------|
| S133=96 | Argentina |
|------------+-----------------------------------------------|
| S133=97 | Bolivia |
|------------+-----------------------------------------------|
| S133=98 | Brazil |
|------------+-----------------------------------------------|
| S133=99 | Chile |
|------------+-----------------------------------------------|
| S133=100 | Columbia |
|------------+-----------------------------------------------|
| S133=101 | Costa Rica |
|------------+-----------------------------------------------|
| S133=102 | Guatemala |
|------------+-----------------------------------------------|
| S133=103 | Mexico |
|------------+-----------------------------------------------|
| S133=104 | Nicaragua |
|------------+-----------------------------------------------|
| S133=105 | Paraguay |
|------------+-----------------------------------------------|
| S133=106 | Peru |
|------------+-----------------------------------------------|
| S133=107 | Uruguay |
+------------------------------------------------------------+
+------------------------------------------------------------+
| COUNTRY CODES (CONTINUED) |
|------------------------------------------------------------|
| S133=108 | Venezuela |
|------------+-----------------------------------------------|
| S133=128 | Kuwait |
|------------+-----------------------------------------------|
| S133=129 | Oman |
|------------+-----------------------------------------------|
| S133=130 | Saudi Arabia |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CREDIT CARD BONG TONE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S121=n [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects credit card bong tone |
|------------------------------------------------------------|
| Command | Function |
|-------------------------+----------------------------------|
| S121=0 | AT&T |
|-------------------------+----------------------------------|
| S121=1 | MCI |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DISPLAY CONNECT SPEED |
|------------------------------------------------------------|
| Type: | Read only |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S37=n [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays current DCE speed |
|------------------------------------------------------------|
| Command | Function |
|------------------------+-----------------------------------|
| S37=5 | 1200bps |
|------------------------+-----------------------------------|
| S37=6 | 2400bps |
|------------------------+-----------------------------------|
| S37=7 | 4800bps |
|------------------------+-----------------------------------|
| S37=8 | 7200bps |
|------------------------+-----------------------------------|
| S37=9 | 9600bps |
|------------------------+-----------------------------------|
| S37=10 | 12.0Kbps |
|------------------------+-----------------------------------|
| S37=11 | 14.4Kbps |
|------------------------+-----------------------------------|
| S37=12 | 19.2Kbps |
|------------------------+-----------------------------------|
| S37=15 | 28.8Kbps |
|------------------------+-----------------------------------|
| S37=26 | 16.8Kbps |
|------------------------+-----------------------------------|
| S37=29 | 24.0Kbps |
|------------------------+-----------------------------------|
| S37=33 | 21.6Kbps |
|------------------------+-----------------------------------|
| S37=34 | 26.4Kbps |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ERRONEOUS CALL RETRY |
|------------------------------------------------------------|
| Type: | Read only |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S145? [cmds] |
|--------------+---------------------------------------------|
| Description: | Contains value for erroneous call retry |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ERRONEOUS CALL DELAY |
|------------------------------------------------------------|
| Type: | Read only |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S146? [cmds] |
|--------------+---------------------------------------------|
| Description: | Contains value for erroneous call delay |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FAST RETRY |
|------------------------------------------------------------|
| Type: | Read only |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S141? [cmds] |
|--------------+---------------------------------------------|
| Description: | Enable/disable status for fast retry for |
| | trouble calls |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FEATURE NEGOTIATION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S48=n [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls feature negotiation with remote |
| | modem |
|------------------------------------------------------------|
| Command | Function |
|---------------------+--------------------------------------|
| S48=0 | No negotiation |
|---------------------+--------------------------------------|
| S48=7 | Feature negotiation enabled |
|---------------------+--------------------------------------|
| S48=128 | Feature negotiation disabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Gn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects modem port flow control |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í \G0 | Flow control disabled |
|--------------+---------------------------------------------|
| \G1 | Flow control enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL TYPE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Qn [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets type of flow control used by modem |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \Q0 | Flow control disabled |
|--------------+---------------------------------------------|
| \Q1 | XON/XOFF flow control enabled |
|--------------+---------------------------------------------|
| \Q2 | Unidirectional hardware flow control |
| | enabled |
|--------------+---------------------------------------------|
| í \Q3 | Bidirectional hardware flow control enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL TYPE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Kn [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets type of flow control used by modem |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &K0 | Local flow control disabled |
|--------------+---------------------------------------------|
| &K1 | Not used |
|--------------+---------------------------------------------|
| &K2 | Not used |
|--------------+---------------------------------------------|
| í &K3 | CTS/RTS flow control enabled |
|--------------+---------------------------------------------|
| &K4 | XON/XOFF flow control enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| HELP SCREEN BORDER |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S120=n [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects help screen display option |
|------------------------------------------------------------|
| Command | Function |
|---------------+--------------------------------------------|
| S120=0 | Surround help screen text with ASCII |
| | character border |
|---------------+--------------------------------------------|
| S120=1 | Do not surround help screen text with |
| | ASCII character border |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INACTIVITY TIMER |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Tn [cmds] |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0-90 |
|--------------+---------------------------------------------|
| Unit: | 1 minute |
|--------------+---------------------------------------------|
| Description: | Sets the length of time that the modem does |
| | not receive information before it |
| | disconnects |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INEFFECTIVE CALL DELAY |
|------------------------------------------------------------|
| Type: | Read only |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S144? [cmds] |
|--------------+---------------------------------------------|
| Description: | Contains value for ineffective call delay |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INEFFECTIVE CALL RETRY |
|------------------------------------------------------------|
| Type: | Read only |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S143? [cmds] |
|--------------+---------------------------------------------|
| Description: | Contains value for ineffective call fast |
| | retry |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INITIATE MNP RELIABLE MODE |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \O [cmds] |
|--------------+---------------------------------------------|
| Description: | Initiates MNP reliable mode from normal or |
| | direct mode |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INTERNATIONAL USAGE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %TEn [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls country specific settings |
|------------------------------------------------------------|
| Command | Function |
|------------------+-----------------------------------------|
| í %TE=0 | International usage disabled |
|------------------+-----------------------------------------|
| %TE=1 | S register 133 enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MAXIMUM BLOCK SIZE FOR TRANSMISSION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \An [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets the maximum transmittable block size |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \A0 | MNP block size is 64 characters |
|--------------+---------------------------------------------|
| \A1 | MNP block size is 128 characters |
|--------------+---------------------------------------------|
| \A2 | MNP block size is 192 characters |
|--------------+---------------------------------------------|
| í \A3 | MNP block size is 256 characters |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PSEUDO DTE SPEED |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S122=n [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets DTE speed used by CONNECT message. Has |
| | not effect on modem operation |
|------------------------------------------------------------|
| Command | Function |
|-----------------------------+------------------------------|
| S122=0 | CONNECT |
|-----------------------------+------------------------------|
| S122=1 | CONNECT 1200 |
|-----------------------------+------------------------------|
| S122=2 | CONNECT 2400 |
|-----------------------------+------------------------------|
| S122=3 | CONNECT 4800 |
|-----------------------------+------------------------------|
| S122=4 | CONNECT 7200 |
|-----------------------------+------------------------------|
| S122=5 | CONNECT 9600 |
|-----------------------------+------------------------------|
| S122=6 | CONNECT 12000 |
|-----------------------------+------------------------------|
| S122=7 | CONNECT 14400 |
|-----------------------------+------------------------------|
| S122=8 | CONNECT 16800 |
|-----------------------------+------------------------------|
| S122=9 | CONNECT19200 |
|-----------------------------+------------------------------|
| S122=10 | CONNECT 21600 |
|-----------------------------+------------------------------|
| S122=11 | CONNECT 24000 |
|-----------------------------+------------------------------|
| S122=12 | CONNECT 26400 |
|-----------------------------+------------------------------|
| S122=13 | CONNECT 28800 |
|-----------------------------+------------------------------|
| S122=14 | CONNECT 38400 |
|-----------------------------+------------------------------|
| S122=15 | CONNECT 57600 |
|-----------------------------+------------------------------|
| S122=16 | CONNECT 115200 |
|-----------------------------+------------------------------|
| S122=17 | CONNECT 230400 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| RESULT CODES |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Vn [cmds] |
|--------------+---------------------------------------------|
| Description: | Adds /ARQ to connect message |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \V0 | Add /ARQ to connect message enabled |
|--------------+---------------------------------------------|
| í \V1 | Add /ARQ to connect message disabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TROUBLE CALL DELAY |
|------------------------------------------------------------|
| Type: | Read only |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S142? [cmds] |
|--------------+---------------------------------------------|
| Description: | Contains value of trouble call delay |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.32 AUTO-RETRAIN |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Bn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects action the modem will take during |
| | bad line quality on V.32/32bis connection |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %B0 | Auto-retrain disabled, hang up on poor line |
| | quality |
|--------------+---------------------------------------------|
| í %B1 | Auto-retrain on line quality problem |
| | enabled |
|--------------+---------------------------------------------|
| %B2 | Modem ignores line quality problems |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.42 DETECTION PHASE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] -Jn [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls V.42 detection |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| -J0 | V.42 detection disabled |
|--------------+---------------------------------------------|
| í -J1 | V.42 detection enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.42bis COMPRESSION CONTROL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] "Hn [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls V.42bis data compression |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| "H0 | V.42bis disabled |
|--------------+---------------------------------------------|
| "H1 | V.42bis when transmitting enabled |
|--------------+---------------------------------------------|
| "H2 | V.42bis when receiving enabled |
|--------------+---------------------------------------------|
| í "H3 | V.42bis when transmitting/receiving enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.42bis DICTIONARY SIZE |
|------------------------------------------------------------|
| Type | Configuration |
|-------------+----------------------------------------------|
| Format | AT [cmds] "Nn [cmds] |
|-------------+----------------------------------------------|
| Default | Unidentified |
|-------------+----------------------------------------------|
| Range | 512-2048 |
|-------------+----------------------------------------------|
| Unit | 1 byte |
|-------------+----------------------------------------------|
| Description | Controls the size of the V.42bis |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.42bis MAXIMUM STRING LENGTH |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] "On [cmds] |
|--------------+---------------------------------------------|
| Default: | 32 |
|--------------+---------------------------------------------|
| Range: | 6 - 250 |
|--------------+---------------------------------------------|
| Unit: | ASCII |
|--------------+---------------------------------------------|
| Description: | Selects string size for V.42bis |
| | compression. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| WAIT FOR MNP LINK |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \U [cmds] |
|--------------+---------------------------------------------|
| Description: | Modem waits in on line mode for an MNP link |
+------------------------------------------------------------+
+------------------------------------------------------------+
| XON/XOFF PASS-THROUGH |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Xn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects whether XON/XOFF signals are sent |
| | to remote modem |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í \X0 | XON/XOFF signals trapped by local modem |
|--------------+---------------------------------------------|
| \X1 | XON/XOFF passed through local modem |