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# PROMETHEUS PRODUCTS, INC.
PC CYBERPORT PRO 288EV (PC288EV)
MAC CYBERPORT PRO 288EV (M288EV)
Card Type Fax, Modem (synchronous/asynchronous),
Voice
Chip Set Unidentified
I/O Options Speakerphone, Voice-mail
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
Fax Modulation ITU-T V.17, V.21CH2, V.27ter, V.29,
Protocol V.33
Error MNP5, V.42, V.42bis
Correction/Compression
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|------------------------------------------------------------|
| Line out | CN1 | RS-232/422 | CN5 |
|----------------------------+---------+--------------+------|
| Line in | CN2 | DC power | CN6 |
|----------------------------+---------+--------------+------|
| Speaker out | CN3 | Power switch | SW1 |
|----------------------------+---------+--------------+------|
| Microphone in | CN4 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAGNOSTIC LED(S) |
|------------------------------------------------------------|
| LED | Color | Status | Condition |
|-----+-------+----------+-----------------------------------|
| AA | Red | On | Auto-answer enabled |
|-----+-------+----------+-----------------------------------|
| AA | Red | Off | Auto-answer disabled |
|-----+-------+----------+-----------------------------------|
| AA | Red | Blinking | Phone is ringing |
|-----+-------+----------+-----------------------------------|
| CD | Red | On | Carrier signal detected |
|-----+-------+----------+-----------------------------------|
| CD | Red | Off | Carrier signal not detected |
|-----+-------+----------+-----------------------------------|
| OH | Red | On | Modem is off-hook |
|-----+-------+----------+-----------------------------------|
| OH | Red | Off | Modem is on-hook |
|-----+-------+----------+-----------------------------------|
| IO | Red | On | Modem is transmitting or |
| | | | receiving data |
|-----+-------+----------+-----------------------------------|
| IO | Red | Off | Modem is not transmitting or |
| | | | receiving data |
|-----+-------+----------+-----------------------------------|
| MR | Red | On | Power is on |
|-----+-------+----------+-----------------------------------|
| MR | Red | Off | Power is off |
+------------------------------------------------------------+
Proprietary AT Command Set
+------------------------------------------------------------+
| ASYNCHRONOUS - CONNECT MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Nn [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets the type of connection used for |
| | asynchronous operation |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \N0 | Wire mode enabled |
|--------------+---------------------------------------------|
| \N1 | Direct V.14 asynchronous mode enabled |
|--------------+---------------------------------------------|
| \N2 | MNP reliable mode enabled |
|--------------+---------------------------------------------|
| \N3 | Auto-reliable mode enabled |
|--------------+---------------------------------------------|
| \N4 | V.42 reliable mode enabled |
|--------------+---------------------------------------------|
| \N5 | V.42 auto-reliable mode or MNP mode enabled |
|--------------+---------------------------------------------|
| \N6 | V.13 - simulated controlled carrier mode |
| | enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AUTO-FALLBACK/FALL-FORWARD |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &An [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects auto-fallback/fall-forward |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &A0 | Auto-fallback/fall-forward disabled |
|--------------+---------------------------------------------|
| &A1 | Auto-fallback/fall-forward enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AUTO-RELIABLE FALLBACK CHARACTER |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %An [cmds] |
|--------------+---------------------------------------------|
| Default: | Unidentified |
|--------------+---------------------------------------------|
| Range: | 0-127 |
|--------------+---------------------------------------------|
| Unit: | ASCII |
|--------------+---------------------------------------------|
| Description: | Sets the character used as the |
| | auto-reliable fallback character; %A0 will |
| | disable this function. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BREAK TYPE |
|------------------------------------------------------------|
| Type: | Configuration |
|---------------+--------------------------------------------|
| Format: | AT [cmds] \Kn [cmds] |
|---------------+--------------------------------------------|
| Description: | Configures action of break signal |
|------------------------------------------------------------|
| Command | Function |
|-----------+------------------------------------------------|
| \K0 | Break sent to remote modem and buffered |
| | cleared |
|-----------+------------------------------------------------|
| \K1 | Break sent to remote modem and buffered saved |
|-----------+------------------------------------------------|
| \K2 | Timed break to remote modem and buffered saved |
|-----------+------------------------------------------------|
| \K3 | Break ignored |
|-----------+------------------------------------------------|
| \K4 | Timed break until no break character and |
| | buffered saved |
|-----------+------------------------------------------------|
| \K5 | Timed break until no break character and |
| | buffered saved |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BUSY OUT |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Bn [cmds] |
|--------------+---------------------------------------------|
| Description: | Sends busy signal when modem is in a test |
| | mode. |
|------------------------------------------------------------|
| Command | Function |
|---------------+--------------------------------------------|
| %B0 | Do not send busy signal when modem is in |
| | test mode |
|---------------+--------------------------------------------|
| %B1 | Send busy signal on loss of DTR |
|---------------+--------------------------------------------|
| %B2 | Send busy signal when modem is in analog |
| | loopback |
|---------------+--------------------------------------------|
| %B3 | Send busy signal when modem is in analog |
| | loopback or on loss of RTS or DTR |
|---------------+--------------------------------------------|
| %B4 | Send busy signal on loss of RTS |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CHARACTER ABORT |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Kn [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls character abort |
|------------------------------------------------------------|
| Command | Function |
|----------------+-------------------------------------------|
| %K0 | 2 second delay until character abort |
|----------------+-------------------------------------------|
| %K1 | Character abort disabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CHARACTER LENGTH |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Bn [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls character length |
|------------------------------------------------------------|
| Command | Function |
|---------------+--------------------------------------------|
| \B0 | 6N1 |
|---------------+--------------------------------------------|
| \B1 | 7N1 |
|---------------+--------------------------------------------|
| \B2 | 7P1, control is set by \P command for |
| | parity type |
|---------------+--------------------------------------------|
| \B3 | 8N1 |
|---------------+--------------------------------------------|
| \B4 | 7P2, control is set by \P command for |
| | parity type |
|---------------+--------------------------------------------|
| \B5 | 8P1, control is set by \P command for |
| | parity type |
+------------------------------------------------------------+
+------------------------------------------------------------+
| COMPRESSION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Cn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects data compression |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %C0 | Data compression disabled |
|--------------+---------------------------------------------|
| %C1 | Transmit and receive path enabled |
|--------------+---------------------------------------------|
| %C2 | Transmit path enabled in V.42bis |
|--------------+---------------------------------------------|
| %C3 | Receive path enabled in V.42bis |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONNECT MESSAGE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Vn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects connect message type reporting |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \V0 | CONNECT reported as VF speed upon data |
| | mode, link message after link negotiation |
|--------------+---------------------------------------------|
| \V1 | CONNECT reported as DTE speed after link |
| | negotiation |
|--------------+---------------------------------------------|
| \V2 | CONNECT reported as VF speed after link and |
| | MNP negotiation |
|--------------+---------------------------------------------|
| \V3 | CONNECT reported as DTE speed after |
| | protocol negotiation |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DATA CARRIER DETECT (DCD) |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Cn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects the DCD options |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &C0 | DCD enabled |
|--------------+---------------------------------------------|
| &C1 | Real mode enabled; follow modem energy |
| | detection. |
|--------------+---------------------------------------------|
| &C2 | DCD enabled after carrier signal detected |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DATA SET READY (DSR) - TEST MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Dn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects DSR options in test mode |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %D0 | DSR forced high during analog loopback |
|--------------+---------------------------------------------|
| %D1 | DSR low during this test |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAL |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] D<#> [cmds] |
|--------------+---------------------------------------------|
| Description: | Dials telephone number according to any |
| | modifiers included in the string |
|--------------+---------------------------------------------|
| Note: | Any combination of modifiers can be used to |
| | produce the desired dial functions in |
| | sequence. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| ! or & | Flash function initiated. Modem commanded |
| | to go off-hook for ½ second before |
| | returning on-hook. |
|--------------+---------------------------------------------|
| , or < | Dialing paused for amount of time specified |
| | in S8 register |
|--------------+---------------------------------------------|
| :n | Redial for n times until data mode is |
| | established |
|--------------+---------------------------------------------|
| ; | Modem returned to Command state after |
| | dialing. The semicolon can only be placed |
| | at the end of the dial command. |
|--------------+---------------------------------------------|
| @ | Wait for Quite Answer function enabled. |
| | Modem waits until a "quiet answer," a |
| | ring-back signal followed by silence up to |
| | the time specified in S7, is received prior |
| | to executing the rest of the dial string. |
|--------------+---------------------------------------------|
| Ln | Link to cell n when modem cannot establish |
| | data mode |
|--------------+---------------------------------------------|
| P | Pulse dialing enabled |
|--------------+---------------------------------------------|
| R | Answer mode enabled; originate mode |
| | disabled following handshake initiation. |
|--------------+---------------------------------------------|
| S | Dial stored telephone number |
|--------------+---------------------------------------------|
| T | Tone dialing enabled/Pulse dialing disabled |
|--------------+---------------------------------------------|
| W | Dialing resumed following dial tone |
| | detection; for amount of time specified in |
| | S6 register |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DTE INTERFACE-CONTROLLED TEST |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %En [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls DTE interface-controlled tests |
|------------------------------------------------------------|
| Command | Function |
|----------------+-------------------------------------------|
| %E0 | Tests controlled by DTE interface pins |
| | disabled |
|----------------+-------------------------------------------|
| %E1 | Tests controlled by DTE interface pins |
| | enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DTE SPEED |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format | AT [cmds] \Tn [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets the maximum allowable DTE speed |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \T0 | Autobaud |
|--------------+---------------------------------------------|
| \T1 | Last AT speed |
|--------------+---------------------------------------------|
| \T2 | 300bps |
|--------------+---------------------------------------------|
| \T3 | 1200bps |
|--------------+---------------------------------------------|
| \T4 | 2400bps |
|--------------+---------------------------------------------|
| \T5 | 4800bps |
|--------------+---------------------------------------------|
| \T6 | 7200bps |
|--------------+---------------------------------------------|
| \T7 | 9600bps |
|--------------+---------------------------------------------|
| \T8 | 12.0Kbps |
|--------------+---------------------------------------------|
| \T9 | 14.4Kbps |
|--------------+---------------------------------------------|
| \T10 | 16.8Kbps |
|--------------+---------------------------------------------|
| \T11 | 19.2Kbps |
|--------------+---------------------------------------------|
| \T12 | 21.6Kbps |
|--------------+---------------------------------------------|
| \T13 | 24Kbps |
|--------------+---------------------------------------------|
| \T14 | 26.4Kbps |
|--------------+---------------------------------------------|
| \T15 | 28.8Kbps |
|--------------+---------------------------------------------|
| \T16 | 38.4Kbps |
|--------------+---------------------------------------------|
| \T17 | 57.6Kbps |
|--------------+---------------------------------------------|
| \T18 | 76.8Kbps |
|--------------+---------------------------------------------|
| \T19 | 115.2Kbps |
|--------------+---------------------------------------------|
| \T20 | 128Kbps |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DTR DIALING |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Zn [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls DTR dialing |
|------------------------------------------------------------|
| Command | Function |
|----------------+-------------------------------------------|
| %Z0 | DTR is ignored |
|----------------+-------------------------------------------|
| %Z1=n | Dial from cell n |
|----------------+-------------------------------------------|
| %Z2 | Go off-hook and attempt to handshake |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FIXED PROFILES |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Fn [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls active profile to values found in |
| | fixed profile |
|------------------------------------------------------------|
| Command | Function |
|-------------------+----------------------------------------|
| &F0 | PSTN, asynchronous, V.42, V.42bis |
|-------------------+----------------------------------------|
| &F1 | PSTN, synchronous |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Gn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects modem port flow control |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \G0 | Flow control disabled |
|--------------+---------------------------------------------|
| \G1 | XON/XOFF signals trapped by local modem |
|--------------+---------------------------------------------|
| \G2 | Flow control enabled in transmit path |
|--------------+---------------------------------------------|
| \G3 | Transmit and receive path enabled with |
| | pass-through |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 | Bi-directional XON/XOFF flow control |
| | enabled |
|--------------+---------------------------------------------|
| \Q2 | CTS flow control by DCE enabled |
|--------------+---------------------------------------------|
| \Q3 | Bi-directional RTS/CTS flow control enabled |
|--------------+---------------------------------------------|
| \Q4 | Unidirectional XON/XOFF flow control by DCE |
| | enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| HANDSHAKE MODE - PSTN |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Hn [cmds] |
|--------------+---------------------------------------------|
| Description: | Set the handshake mode when originating |
|------------------------------------------------------------|
| Command | Function |
|----------------+-------------------------------------------|
| &H0 | GDC fast auto (28.8Kbps - 300bps) |
|----------------+-------------------------------------------|
| &H1 | GDC fast only (28.8Kbps - 9600bps) |
|----------------+-------------------------------------------|
| &H2 | V.32bis automatic (14.4Kbps - 300bps) |
|----------------+-------------------------------------------|
| &H3 | V.32bis only (14.4Kbps - 4800bps) |
|----------------+-------------------------------------------|
| &H4 | V.32 automatic (9600bps - 300bps) |
|----------------+-------------------------------------------|
| &H5 | V.32 only (9600bps - 4800bps) |
|----------------+-------------------------------------------|
| &H6 | V.22bis only (2400bps - 1200bps) |
|----------------+-------------------------------------------|
| &H7 | V.22 only (1200bps) |
|----------------+-------------------------------------------|
| &H8 | Bell 212A only (1200bps) |
|----------------+-------------------------------------------|
| &H9 | Bell 103 only (300bps) |
|----------------+-------------------------------------------|
| &H10 | V.21 only (300bps) |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MESSAGE RESPONSE SPEED |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format | AT [cmds] %Rn [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets the maximum allowable message speed |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %R0 | Autobaud |
|--------------+---------------------------------------------|
| %R1 | Speed of last connection |
|--------------+---------------------------------------------|
| %R2 | 300bps |
|--------------+---------------------------------------------|
| %R3 | 1200bps |
|--------------+---------------------------------------------|
| %R4 | 2400bps |
|--------------+---------------------------------------------|
| %R5 | 4800bps |
|--------------+---------------------------------------------|
| %R6 | 7200bps |
|--------------+---------------------------------------------|
| %R7 | 9600bps |
|--------------+---------------------------------------------|
| %R8 | 12.0Kbps |
|--------------+---------------------------------------------|
| %R9 | 14.4Kbps |
|--------------+---------------------------------------------|
| %R10 | 16.8Kbps |
|--------------+---------------------------------------------|
| %R11 | 19.2Kbps |
|--------------+---------------------------------------------|
| %R12 | 21.6Kbps |
|--------------+---------------------------------------------|
| %R13 | 24Kbps |
|--------------+---------------------------------------------|
| %R14 | 26.4Kbps |
|--------------+---------------------------------------------|
| %R15 | 28.8Kbps |
|--------------+---------------------------------------------|
| %R16 | 38.4Kbps |
|--------------+---------------------------------------------|
| %R17 | 57.6Kbps |
|--------------+---------------------------------------------|
| %R18 | 76.8Kbps |
|--------------+---------------------------------------------|
| %R19 | 115.2Kbps |
|--------------+---------------------------------------------|
| %R20 | 128Kbps |
+------------------------------------------------------------+
+------------------------------------------------------------+
| OVERSPEED CORRECTION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \An [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls overspeed correction |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \A0 | 1.25% asynchronous overspeed correction |
| | enabled |
|--------------+---------------------------------------------|
| \A1 | 2.5% overspeed correction enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARITY CONTROL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Pn [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls Parity |
|------------------------------------------------------------|
| Command | Function |
|----------------+-------------------------------------------|
| \P0 | Parity even |
|----------------+-------------------------------------------|
| \P1 | Space Parity |
|----------------+-------------------------------------------|
| \P2 | Parity odd |
|----------------+-------------------------------------------|
| \P3 | Mark Parity |
|----------------+-------------------------------------------|
| \P4 | Last AT command (automatic) |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PRE-LINK DATA BUFFER/FALLBACK CONTROL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Cn [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets the handling of pre-link data buffer |
| | and fallback |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \C0 | Time-out and fallback, speed buffer, no |
| | data buffer |
|--------------+---------------------------------------------|
| \C1 | Time-out and fallback, speed buffer, buffer |
| | received data |
|--------------+---------------------------------------------|
| \C2 | Auto-reliable, fallback with fallback |
| | character speed buffer, no receive data |
| | buffer |
|--------------+---------------------------------------------|
| \C3 | Time-out and fallback, V.14, buffer |
| | received data |
|--------------+---------------------------------------------|
| \C4 | Time-out or fallback with fallback |
| | character, V.14, no data buffer |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REPORT INFORMATION |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] In [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays information requested |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| I0 | Reports product code |
|--------------+---------------------------------------------|
| I1 | Reports ROM checksum |
|--------------+---------------------------------------------|
| I2 | Tests and reports ROM checksum |
|--------------+---------------------------------------------|
| I3 | Reports firmware revision level (A-) |
|--------------+---------------------------------------------|
| I4 | Displays settings of all S-registers |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REQUEST STORED NUMBERS |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &V [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays the list of stored numbers; only 4 |
| | can be stored. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| RETRAIN - LINE SIGNAL QUALITY |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Qn [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls retrain function if poor line |
| | quality is detected |
|------------------------------------------------------------|
| Command | Function |
|---------------+--------------------------------------------|
| %Q0 | Retrain disabled |
|---------------+--------------------------------------------|
| %Q1 | 3 retraining attempts enabled, hang-up if |
| | not successful |
|---------------+--------------------------------------------|
| %Q2 | Retrain enabled until line quality is good |
+------------------------------------------------------------+
+------------------------------------------------------------+
| RETRANSMISSION COUNTER |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S70=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 100 |
|--------------+---------------------------------------------|
| Range: | Unidentified |
|--------------+---------------------------------------------|
| Unit: | Unidentified |
|--------------+---------------------------------------------|
| Description: | Counts the number of retries to make a |
| | connection |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIMULATED CONTROLLED CARRIER |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &En [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls simulated controlled carrier |
| | (ITU-T V.13) |
|------------------------------------------------------------|
| Command | Function |
|-----------------+------------------------------------------|
| &E0 | Transmit and receive path enabled |
|-----------------+------------------------------------------|
| &E1 | Transmit path enabled |
|-----------------+------------------------------------------|
| &E2 | Receive path enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SYNCHRONOUS - CONNECT MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Nn [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets the type of protocol used for |
| | synchronous operation |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \M0 | Normal synchronous mode enabled |
|--------------+---------------------------------------------|
| \M1 | V.13 synchronous mode enabled, simulated |
| | controlled carrier |
+------------------------------------------------------------+