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# E-TECH RESEARCH, INC.
E288MX (REV. 1.1)
Modem Type Data (synchronous/asynchronous)/Fax
Maximum Data Rate 28.8Kbps
Maximum Fax Rate 14.4Kbps
Data Bus External
Fax Class Class I & II
Data Modulation Bell 103A/212A
Protocol
ITU-T V.21, V.22, V.22bis, V.23, V.32,
V.32bis, V.34
AT&T V.32terbo
Fax Modulation ITU-T V.17, V.21CH2, V.27ter, V.29
Protocol
Error MNP5, V.42, V.42bis
Correction/Compression
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| Line out | CN1 | DC power | CN4 |
|------------------+----------+-------------------+----------|
| Line in | CN2 | Volume | R1 |
|------------------+----------+-------------------+----------|
| RS-232/422 | CN3 | Power switch | SW1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAGNOSTIC LED(S) |
|------------------------------------------------------------|
| LED | Color | Status | Condition |
|------+-------+----------+----------------------------------|
| TD | Red | On | DTE is transmitting data |
|------+-------+----------+----------------------------------|
| TD | Red | Off | DTE is not transmitting data |
|------+-------+----------+----------------------------------|
| RD | Red | On | Modem is receiving data |
|------+-------+----------+----------------------------------|
| RD | Red | Off | Modem is not receiving data |
|------+-------+----------+----------------------------------|
| DTR | Red | On | DTR signal is high |
|------+-------+----------+----------------------------------|
| DTR | Red | Off | DTR signal is low |
|------+-------+----------+----------------------------------|
| CTS | Red | On | CTS signal is high |
|------+-------+----------+----------------------------------|
| CTS | Red | Off | CTS signal is low |
|------+-------+----------+----------------------------------|
| DCD | Red | On | Carrier signal detected |
|------+-------+----------+----------------------------------|
| DCD | Red | Off | Carrier signal not detected |
|------+-------+----------+----------------------------------|
| OH | Red | On | Modem is off-hook |
|------+-------+----------+----------------------------------|
| OH | Red | Off | Modem is on-hook |
|------+-------+----------+----------------------------------|
| AA | Red | On | Auto-answer enabled |
|------+-------+----------+----------------------------------|
| AA | Red | Off | Auto-answer disabled |
|------+-------+----------+----------------------------------|
| AA | Red | Blinking | Phone is ringing |
|------+-------+----------+----------------------------------|
| LL | Red | On | Operating in lease-line mode |
|------+-------+----------+----------------------------------|
| LL | Red | Off | Not operating in Lease-line mode |
|------+-------+----------+----------------------------------|
| PWR | Red | On | Power is on |
|------+-------+----------+----------------------------------|
| PWR | Red | Off | Power is off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| JUMPER SELECTION |
|------------------------------------------------------------|
| Function | JP6 | JP7 | JP8 | JP9 |
|--------------------+--------+----------+----------+--------|
| Switched | Open | Not used | Not used | Closed |
|--------------------+--------+----------+----------+--------|
| Lease Line - | Closed | Open | Closed | Open |
| originating | | | | |
|--------------------+--------+----------+----------+--------|
| Lease Line - | Closed | Closed | Closed | Open |
| answering | | | | |
+------------------------------------------------------------+
Proprietary AT Command Set
+------------------------------------------------------------+
| AUTO FALL FORWARD/FALLBACK |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Gn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT %G1 &W <CR> |
|--------------+---------------------------------------------|
| Description: | Selects auto fallback. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %G0 | Fallback disabled. |
|--------------+---------------------------------------------|
| » %G1 | Fallback enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AUTO-RELIABLE FALLBACK CHARACTER |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %An [cmds] |
|--------------+---------------------------------------------|
| Example: | AT%A20<CR> |
|--------------+---------------------------------------------|
| Default: | 13 |
|--------------+---------------------------------------------|
| Range: | 0-127 |
|--------------+---------------------------------------------|
| Unit: | ASCII |
|--------------+---------------------------------------------|
| Description: | Sets the character used as the |
| | auto-reliable fallback character. %A0 will |
| | disable this function. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AUTO-RELIABLE TIME BUFFER CONFIGURATION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Cn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \C1 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Controls the handling of incoming data |
| | during auto-reliable time period. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » \CO | Data is discarded. |
|--------------+---------------------------------------------|
| \C1 | Data is buffered. |
|--------------+---------------------------------------------|
| \C2 | Data is discarded, sets to normal mode and |
| | sends auto-reliable character to serial |
| | port. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AUTO SLEEP TIMER |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format | AT [cmds] S46=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S46= 100<CR> |
|--------------+---------------------------------------------|
| Default: | 255 |
|--------------+---------------------------------------------|
| Range: | 0 - 255 |
|--------------+---------------------------------------------|
| Unit: | .1 second |
|--------------+---------------------------------------------|
| Description: | Maximum duration of DTE and DCE inactivity |
| | allowed prior to initiating low-power sleep |
| | mode. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BREAK SEND |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Bn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \B3 &W<CR> |
|--------------+---------------------------------------------|
| Range: | 0 - 9 |
|--------------+---------------------------------------------|
| Unit: | 100 ms |
|--------------+---------------------------------------------|
| Description: | Sends break to modem. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BREAK TYPE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Kn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \K1 <CR> |
|--------------+---------------------------------------------|
| Description: | Configures action of break signal. |
|------------------------------------------------------------|
| Command | In normal or | In direct | Break |
| | reliable | mode, break | received |
| | mode, break | from DTE | from remote |
| | from DTE | | modem |
|---------------+---------------+--------------+-------------|
| \K0 | Online | Send break | Buffers |
| | command mode | immediately | cleared, |
| | enabled, send | and enter | break sent |
| | no break to | command | to remote |
| | remote modem. | state. | modem. |
|---------------+---------------+--------------+-------------|
| \K1 | Break sent to | Send break | Buffers |
| | remote modem | to remote | cleared, |
| | and buffered | modem | break sent |
| | cleared. | immediately. | to remote |
| | | | modem. |
|---------------+---------------+--------------+-------------|
| \K2 | Online | Send break | Break sent |
| | command mode | immediately | immediately |
| | enabled, send | and enter | to DTE. |
| | no break to | command | |
| | remote modem. | state. | |
|---------------+---------------+--------------+-------------|
| \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 | immediately | to remote |
| | enabled, send | and enter | modem when |
| | no break to | command | data |
| | remote modem. | state. | received. |
|---------------+---------------+--------------+-------------|
| \K5 | Send break | Send break | Break sent |
| | with | to remote | to remote |
| | transmitted | modem | modem when |
| | data. | immediately. | data |
| | | | received. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| COMMAND SET |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Vn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT %V0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Selects V.25bis or AT command sets. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » %V0 | AT command set enabled. |
|--------------+---------------------------------------------|
| %V1 | V.25bis command set enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| COMPRESSION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT %Cn |
|--------------+---------------------------------------------|
| Example: | AT *EC0 %C3 *AP0<CR> |
|--------------+---------------------------------------------|
| Description: | Contols data compression. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %C0 | Data compression disabled. |
|--------------+---------------------------------------------|
| %C1 | MNP 5 enabled. |
|--------------+---------------------------------------------|
| %C2 | V.42bis enabled. |
|--------------+---------------------------------------------|
| » %C3 | MNP 5 and V.42bis enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DATA COMPRESSION CONTROL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] $Cn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT $C1 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Controls data compression. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| $C0 | Data compression disabled. |
|--------------+---------------------------------------------|
| » $C1 | MNP 5 and V.42bis enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAL STORE NUMBER |
|------------------------------------------------------------|
| Type: | Configuration |
|------------------------+-----------------------------------|
| Format: | AT [cmds] DSn [cmds] |
|------------------------+-----------------------------------|
| Example: | AT DS1 &W<CR> |
|------------------------+-----------------------------------|
| Description: | Dial stored number |
|------------------------------------------------------------|
| Note: n = 0 - 3, only three phone numbers can be in the |
| nonvolatile memory. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DTE RATE STATUS |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S62=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S62=16 <CR> |
|--------------+---------------------------------------------|
| Description: | Selects DTE rate. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| 0 | 300bps. |
|--------------+---------------------------------------------|
| 1 | 600bps. |
|--------------+---------------------------------------------|
| 2 | 1200bps. |
|--------------+---------------------------------------------|
| 3 | 2400bps. |
|--------------+---------------------------------------------|
| 4 | 4800bps. |
|--------------+---------------------------------------------|
| 5 | 7200bps. |
|--------------+---------------------------------------------|
| 6 | 9600bps. |
|--------------+---------------------------------------------|
| 7 | 12Kbps. |
|--------------+---------------------------------------------|
| 8 | 14.4Kbps. |
|--------------+---------------------------------------------|
| 9 | 16.8Kbps. |
|--------------+---------------------------------------------|
| 10 | 19.2Kbps. |
|--------------+---------------------------------------------|
| 11 | 21.6Kbps. |
|--------------+---------------------------------------------|
| 12 | 24Kbps. |
|--------------+---------------------------------------------|
| 13 | 26.4Kbps. |
|--------------+---------------------------------------------|
| 14 | 28.8Kbps. |
|--------------+---------------------------------------------|
| 15 | 38.4Kbps. |
|--------------+---------------------------------------------|
| » 16 | 57.6Kbps. |
|--------------+---------------------------------------------|
| 17 | 115.2Kbps. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DTE SPEED OPTION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Jn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \J0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Controls the speed of the DTE. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » \J0 | DCE and DTE rates are independent. |
|--------------+---------------------------------------------|
| \J1 | DTE rate adjusts to DCE rate after |
| | connection. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ERROR CORRECTION CONTROL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] $En [cmds] |
|--------------+---------------------------------------------|
| Example: | AT $E3 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Selects error correction mode. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| $E0 | Normal mode. |
|--------------+---------------------------------------------|
| $E1 | MNP auto-reliable mode. |
|--------------+---------------------------------------------|
| $E2 | MNP reliable mode. |
|--------------+---------------------------------------------|
| » $E3 | LAPM, MNP, or normal reliable mode. |
|--------------+---------------------------------------------|
| $E4 | LAPM mode reliable mode only. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FAX/DATA MODE |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S50=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S50=0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Choose data or FAX mode. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » 0 | Data mode enabled. |
|--------------+---------------------------------------------|
| 1 | FAX mode enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Gn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \G1 &K3<CR> |
|--------------+---------------------------------------------|
| Description: | Selects modem port flow control. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \G0 | Flow control disabled. |
|--------------+---------------------------------------------|
| \G1 | Flow control enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] $Fn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT $F4 A<CR> |
|--------------+---------------------------------------------|
| Description: | Select flow control used by modem. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| $F0 | XON/XOFF software flow control enabled. |
|--------------+---------------------------------------------|
| $F1 | XON/XOFF pass-through flow control enabled. |
|--------------+---------------------------------------------|
| $F4 | Hardware CTS/RTS flow control enabled. |
|--------------+---------------------------------------------|
| $F5 | Flow control disabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL TYPE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Qn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \Q2<CR> |
|--------------+---------------------------------------------|
| Description: | Sets type of flow control used by modem. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \Q0 | Flow control disabled. |
|--------------+---------------------------------------------|
| \Q1 | XON/XOFF software flow control enabled. |
|--------------+---------------------------------------------|
| \Q2 | CTS flow control by DCE enabled. |
|--------------+---------------------------------------------|
| » \Q3 | CTS/RTS hardware flow control enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| IDENTIFICATION |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] In [cmds] |
|--------------+---------------------------------------------|
| Example: | AT I3 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Displays several options. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| I0 | Display product - identification code. |
|--------------+---------------------------------------------|
| I2 | Display ROM checksum. |
|--------------+---------------------------------------------|
| I3 | Display firmware version. |
|--------------+---------------------------------------------|
| I4 | Display OEM string. |
|--------------+---------------------------------------------|
| I5 | Display country code. |
|--------------+---------------------------------------------|
| I9 | Display ROM checksum. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INACTIVITY TIMER |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Tn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT\T20<CR> |
|--------------+---------------------------------------------|
| Default: | Unidentified. |
|--------------+---------------------------------------------|
| Range: | 1-90 |
|--------------+---------------------------------------------|
| Unit: | 1 minute |
|--------------+---------------------------------------------|
| Description: | Sets the length of time that the modem does |
| | not receive information before it |
| | disconnects. |
|--------------+---------------------------------------------|
| Note: | \T0 will disable inactivity timer. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MAXIMUM BLOCK SIZE FOR TRANSMISSION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \An [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \A3 %C1<CR> |
|--------------+---------------------------------------------|
| Description: | Sets the maximum transmittable block size. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \A0 | Maximum MNP block size is 64 characters. |
|--------------+---------------------------------------------|
| \A1 | Maximum MNP block size is 128 characters. |
|--------------+---------------------------------------------|
| \A2 | Maximum MNP block size is 192 characters. |
|--------------+---------------------------------------------|
| » \A3 | Maximum MNP block size is 256 characters. |
|--------------+---------------------------------------------|
| \A4 | Maximum MNP block size is 32 characters. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MODEM PROTOCOL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Nn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \N1 DT555-1212<CR> |
|--------------+---------------------------------------------|
| Description: | Sets connect mode. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \N0 | Normal mode enabled. |
|--------------+---------------------------------------------|
| \N1 | Direct mode enabled. |
|--------------+---------------------------------------------|
| \N2 | MNP reliable mode enabled. |
|--------------+---------------------------------------------|
| » \N3 | MNP, LAP-M, or normal mode enabled. |
|--------------+---------------------------------------------|
| \N4 | LAP-M or MNP reliable enabled. |
|--------------+---------------------------------------------|
| \N5 | LAP-M reliable mode enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| POOR SIGNAL QUALITY REACTION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %En [cmds] |
|--------------+---------------------------------------------|
| Example: | AT %E0<CR> |
|--------------+---------------------------------------------|
| Description: | Configures the modem’s reaction to poor |
| | signal quality. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %E0 | Modem will disconnect during poor signal |
| | quality. |
|--------------+---------------------------------------------|
| » %E1 | Modem retrains during poor signal quality, |
| | disconnect if threshold set in S37 is |
| | exceeded. |
|--------------+---------------------------------------------|
| %E2 | Modem does nothing during poor signal |
| | quality. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PROTOCOL RESULT CODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Vn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \V0 Q0 <CR> |
|--------------+---------------------------------------------|
| Description: | \V responds when conjunction with W0 and W2 |
| | commands. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \V1 | Protocol result code disabled. |
|--------------+---------------------------------------------|
| » \V0 | Protocol result code enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PROTOCOL/SPEED |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S37n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S37=0 <CR> |
|--------------+---------------------------------------------|
| Description: | Selects the current DCE speed. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| 0 | Select last AT speed. |
|--------------+---------------------------------------------|
| 3 | Select 300bps speed. |
|--------------+---------------------------------------------|
| 5 | Select 1200bps speed. |
|--------------+---------------------------------------------|
| 6 | Select 2400bps speed. |
|--------------+---------------------------------------------|
| 7 | Select 4800bps speed. |
|--------------+---------------------------------------------|
| 8 | Select 7200bps speed. |
|--------------+---------------------------------------------|
| 9 | Select 9600bps speed. |
|--------------+---------------------------------------------|
| 10 | Select 12Kbps speed. |
|--------------+---------------------------------------------|
| 11 | Select 14.4Kbps speed. |
|--------------+---------------------------------------------|
| 12 | Select 16.8Kbps speed. |
|--------------+---------------------------------------------|
| 13 | Select 19.2Kbps speed. |
|--------------+---------------------------------------------|
| 14 | Select 21.6Kbps speed. |
|--------------+---------------------------------------------|
| 15 | Select 24Kbps speed. |
|--------------+---------------------------------------------|
| 16 | Select 26.4Kbps speed. |
|--------------+---------------------------------------------|
| 17 | Select 28.8Kbps speed. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ROUND TRIP DELAY |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S65=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S65=1 <CR> |
|--------------+---------------------------------------------|
| Default: | Unidentified |
|--------------+---------------------------------------------|
| Range: | Unidentified |
|--------------+---------------------------------------------|
| Unit: | 100 ms |
|--------------+---------------------------------------------|
| Description: | Sets the round trip delay. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.42 DETECTION PHASE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] -Jn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT -J1 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Controls V.42 detection. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| -J0 | V.42 detection disabled. |
|--------------+---------------------------------------------|
| » -J1 | V.42 detection enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V42bis COMPRESSION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] "Hn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT "H3 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Controls V.42bis compression. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| "H0 | V.42bis disabled. |
|--------------+---------------------------------------------|
| "H1 | V.42bis while transmit enabled. |
|--------------+---------------------------------------------|
| "H2 | V.42bis while receiving enabled. |
|--------------+---------------------------------------------|
| » "H3 | V.42bis during transmitting and receiving |
| | enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.42bis DICTIONARY SIZE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] "Nn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT "N2 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Controls V.42 dictionary size. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| "N0 | 512 bytes. |
|--------------+---------------------------------------------|
| "N1 | 1024 bytes. |
|--------------+---------------------------------------------|
| » "N2 | 1536 bytes. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.42bis MAXIMUM STRING LENGTH |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] "On [cmds] |
|--------------+---------------------------------------------|
| Example: | AT "O32 <CR> |
|--------------+---------------------------------------------|
| Default: | 32 |
|--------------+---------------------------------------------|
| Range: | 6 - 64 |
|--------------+---------------------------------------------|
| Unit: | Unidentified |
|--------------+---------------------------------------------|
| Description: | Selects string size for V.42bis |
| | compression. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| XON/XOFF PASS-THROUGH |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Xn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \X0 <CR> |
|--------------+---------------------------------------------|
| Description: | Selects whether XON/XOFF signals are sent |
| | to remote modem. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » \X0 | XON/XOFF signals trapped by local modem. |
|--------------+---------------------------------------------|
| \X1 | XON/XOFF passed through local modem. |
+------------------------------------------------------------+
Proprietary V.25bis Command Set
+------------------------------------------------------------+
| COMMAND SET - AT |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | CNL[cmds] |
|--------------+---------------------------------------------|
| Example: | CNL%V0<CR> |
|--------------+---------------------------------------------|
| Description: | Execute an AT command. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REQUEST LISTED NUMBERS |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | RLN |
|--------------+---------------------------------------------|
| Example: | RLN<CR> |
|--------------+---------------------------------------------|
| Description: | Requests the modem to return the list of |
| | stored numbers. If no numbers are stored, |
| | the modem will return LSN. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| STORED NUMBERS LIST |
|------------------------------------------------------------|
| Type: | Result code |
|--------------+---------------------------------------------|
| Format: | LSNxxxx |
|--------------+---------------------------------------------|
| Example: | LSN 443-3388 |
|--------------+---------------------------------------------|
| Description: | Displays stored numbers. xxxx may specify a |
| | memory location, phone number, or status. |
| | If no code was specified with RLN, all |
| | stored numbers are displayed. |
+------------------------------------------------------------+