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# PHILIPS CONSUMER ELECTRONICS, CO.
PCA14EM (USA)
Card Type Modem
Chip Set Unidentified
I/O Options Line out, line in, 25-pin DTE port,
power
Maximum Modem Rate 57.6Kbps
Maximum Fax Rate 14.4Kbps
Data Modulation Bell 103/212A
Protocol
ITU-T V.22, V.22bis, V.32, V.32bis
Fax Modulation ITU-T V.17, V.27ter, V.29
Protocol
Error MNP5, V.42, V.42bis
Correction/Compression
Fax Class Class I & II
Data Bus External
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|------------------------------------------------------------|
| Line out (RJ-11) | CN1 | Power | CN4 |
|----------------------------+---------+--------------+------|
| Line in (RJ-11) | CN2 | Power switch | SW1 |
|----------------------------+---------+--------------+------|
| 25-pin DTE port | CN3 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAGNOSTIC LED(S) |
|------------------------------------------------------------|
| LED | Color | Status | Condition |
|-----+------------------+-----------+-----------------------|
| MR | Unidentified | On | Power is on |
|-----+------------------+-----------+-----------------------|
| MR | Unidentified | Off | Power is off |
|-----+------------------+-----------+-----------------------|
| TR | Unidentified | On | DTR signal is high |
|-----+------------------+-----------+-----------------------|
| TR | Unidentified | Off | DTR signal is low |
|------------------------------------------------------------|
| SD | Unidentified | On | Modem is |
| | | | transmitting data |
|-------------+-----------------+-----+----------------------|
| SD | Unidentified | Off | Modem is not |
| | | | transmitting data |
|-------------+-----------------+-----+----------------------|
| RD | Unidentified | On | Modem is receiving |
| | | | data |
|-------------+-----------------+-----+----------------------|
| RD | Unidentified | Off | Modem is not |
| | | | receiving data |
|-------------+-----------------+-----+----------------------|
| OH | Unidentified | On | Modem is off hook |
|-------------+-----------------+-----+----------------------|
| OH | Unidentified | Off | Modem is on hook |
|------------------------------------------------------------|
| CD | Unidentified | On | Carrier signal |
| | | | detected or error |
| | | | correction |
| | | | negotiation completed |
|-----+------------------+-----------+-----------------------|
| CD | Unidentified | Off | Carrier signal not |
| | | | detected |
|-----+------------------+-----------+-----------------------|
| AA | Unidentified | On | Auto-answer enabled |
|-----+------------------+-----------+-----------------------|
| AA | Unidentified | Off | Auto-answer disabled |
|-----+------------------+-----------+-----------------------|
| AA | Unidentified | Blinking | Incoming ring |
| | | | detected |
|-----+------------------+-----------+-----------------------|
| HS | Unidentified | On | Mdem is connected at |
| | | | 14.4Kbps |
|-----+------------------+-----------+-----------------------|
| HS | Unidentified | Off | Modem is not |
| | | | connected or |
| | | | connected at speed |
| | | | lower than 14.4Kbps |
|-----+------------------+-----------+-----------------------|
| TST | Unidentified | On | Normal operation; no |
| | | | error detected |
|-----+------------------+-----------+-----------------------|
| TST | Unidentified | Off | Error detected and |
| | | | corrected |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SUPPORTED COMMAND SET |
|------------------------------------------------------------|
| Basic AT Commands |
|------------------------------------------------------------|
| AT, ‘+++’, A/ |
|------------------------------------------------------------|
| A, E, H, M, P, T, V, X, Y, Z |
|------------------------------------------------------------|
| &C, &G, &M, &R, &T, &V, &W, &X, &Y, &Z |
|------------------------------------------------------------|
| Extended AT Commands |
|------------------------------------------------------------|
| %A, %C |
|------------------------------------------------------------|
| \A, \B, \C, \E, \G, \J, \K, \O, \Q, \T, \U, \X, \Y, \Z |
|------------------------------------------------------------|
| S Registers |
|------------------------------------------------------------|
| S0, S1, S2, S3, S4, S5, S6, S7, S8, S9,S10, S11, S12, S18, |
| S25, S26 |
|------------------------------------------------------------|
| |
|------------------------------------------------------------|
| Note: See MHI Help File for full command documentation. |
+------------------------------------------------------------+
PROPRIETARY AT COMMAND SET
+------------------------------------------------------------+
| AUTO-FALLBACK/FALL-FORWARD |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &En [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls fallback/fall-forward |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í &E0 | Auto-fallback/fall-forward disabled |
|--------------+---------------------------------------------|
| &E1 | Auto-fallback/fall-forward enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| COMMUNICATION PROTOCOLS |
|------------------------------------------------------------|
| Type: | Configuration |
|----------------------------+-------------------------------|
| Format: | AT [cmds] Bn [cmds] |
|----------------------------+-------------------------------|
| Description: | Selects the communication |
| | protocol for data calls |
|------------------------------------------------------------|
| Command | Speed(s) | Mode(s) |
|-----------+-----------------------------+------------------|
| B0 | 300bps | V.21 |
| | | |
| | 1200bps | V.22 |
| | | |
| | 2400bps | V.22bis, V.22, |
| | | Bell 212A |
| | 4800bps, 9600bps | |
| | | V.32, V.22bis, |
| | 14.4kbps | V.22, Bell 212A |
| | | |
| | 19.2Kbps,28.8Kbps,38.4Kbps, | V.32bis, V.32, |
| | | V.22bis, V.22, |
| | 57.6kbps | Bell 212A |
| | | |
| | | V.32bis, V.32, |
| | | V.22bis, V.22, |
| | | Bell 212A |
|-----------+-----------------------------+------------------|
| » B1 | 300bps | Bell 103 |
| | | |
| | 1200bps | Bell 212A |
| | | |
| | 2400bps | V.22bis, V.22, |
| | | Bell 212A |
| | 4800bps, 9600bps | |
| | | V.32, V.22bis, |
| | 14.4kbps | V.22, Bell 212A |
| | | |
| | 19.2Kbps,28.8Kbps,38.4Kbps, | V.32bis, V.32, |
| | | V.22bis, V.22, |
| | 57.6kbps | Bell 212A |
| | | |
| | | V.32bis, V.32, |
| | | V.22bis, V.22, |
| | | Bell 212A |
|-----------+-----------------------------+------------------|
| B2 | Any speed | V.32bis, V.32, |
| | | V.22bis, V.22, |
| | | Bell 212A |
|-----------+-----------------------------+------------------|
| B3 | Any speed | V.23 |
|-----------+-----------------------------+------------------|
| B4 | Any speed | V.21 at 300bps |
|-----------+-----------------------------+------------------|
| B5 | Any speed | V.22 at 1200bps |
|-----------+-----------------------------+------------------|
| B6 | Any speed | V.22bis at |
| | | 2400bps |
|-----------+-----------------------------+------------------|
| B7 | Any speed | V.32 at 4800bps |
|-----------+-----------------------------+------------------|
| B8 | Any speed | V.32 at 9600bps |
|-----------+-----------------------------+------------------|
| B9 | Any speed | V.32bis at |
| | | 14.4kbps |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DATA SET READY (DSR) |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Sn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects DSR options |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í &S0 | DSR forced high |
|--------------+---------------------------------------------|
| &S1 | DSR high only while modem is handshaking or |
| | connected |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DATA TERMINAL READY (DTR) |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Dn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects modem response to DTR |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &D0 | DTR ignored |
|--------------+---------------------------------------------|
| &D1 | DTR toggle causes online command mode |
|--------------+---------------------------------------------|
| í &D2 | DTR toggle causes modem to go on-hook |
|--------------+---------------------------------------------|
| &D3 | Modem reset on DTR toggle |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
|--------------+---------------------------------------------|
| DP | Pulse dialing enabled |
|--------------+---------------------------------------------|
| DR | Answer mode enabled; originate mode |
| | disabled following handshake initiation. |
|--------------+---------------------------------------------|
| DS=n | Dial stored telephone number n |
|--------------+---------------------------------------------|
| DT | Tone dialing enabled/Pulse dialing disabled |
|--------------+---------------------------------------------|
| DW | Dialing resumed following dial tone |
| | detection |
|--------------+---------------------------------------------|
| D@ | 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. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FACTORY DEFAULT PROFILE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &F [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets values in active profile to values |
| | found in the default profile |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í &F0 | Recalls factory defaults with V.42bis error |
| | correction and hardware flow control |
| | enabled |
|--------------+---------------------------------------------|
| &F1 | Recalls factory defaults with software flow |
| | control enabled |
|--------------+---------------------------------------------|
| &F2 | Recalls factory defaults with V.42bis error |
| | correction and hardware flow control |
| | enabled |
|--------------+---------------------------------------------|
| &F3 | Recalls factory defaults with software flow |
| | control enabled. DTR ignored |
|--------------+---------------------------------------------|
| &F4 | Recalls factory defaults with V.42bis error |
| | correction and hardware flow control |
| | enabled. DTR ignored |
|--------------+---------------------------------------------|
| &F5 | Recalls factory defaults with V.42bis error |
| | correction and hardware flow control |
| | disabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| HELP SCREEN |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Hn [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays Help screens on all available |
| | commands |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LINE TYPE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Ln [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects line type |
|--------------+---------------------------------------------|
| Command | Line Type |
|--------------+---------------------------------------------|
| í &L0 | Switched line (PSTN/Dial-up) |
|--------------+---------------------------------------------|
| &L1 | Leased line |
|--------------+---------------------------------------------|
| &L2 | Power-on leased line |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ON-LINE |
|------------------------------------------------------------|
| Type: | Immediate |
|---------------+--------------------------------------------|
| Format: | AT [cmds] On [cmds] |
|---------------+--------------------------------------------|
| Description: | Controls on-line command (data |
| | transmission) state options. |
|------------------------------------------------------------|
| Note: The O command must be placed at the end of the |
| command string. |
|------------------------------------------------------------|
| Command | Function |
|---------------+--------------------------------------------|
| O0 | On-line command mode with no retraining |
| | enabled |
|---------------+--------------------------------------------|
| O1 | On-line command mode with retraining |
| | enabled |
|---------------+--------------------------------------------|
| O2 | On-line command mode with retraining and |
| | fall-forward enabled |
|---------------+--------------------------------------------|
| O3 | On-line command mode with retraining and |
| | fall-back enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ORIGINATE-ONLY |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &On [cmds] |
|--------------+---------------------------------------------|
| Description: | Enable/disable originate-only mode |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í &O0 | Originate-only mode disabled |
|--------------+---------------------------------------------|
| &O1 | Originate-only mode enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PULSE DIALING RATIO |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Pn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects pulse dial make/break ratio |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í &P0 | 39/61ms at 10pps (North America) |
|--------------+---------------------------------------------|
| &P1 | 33/67ms at 10pps (Europe) |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REPORT INFORMATION |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] In [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays information requested |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| I0 | Reports product ID code |
|--------------+---------------------------------------------|
| I1 | Reports ROM checksum |
|--------------+---------------------------------------------|
| I2 | Tests and reports ROM checksum |
|--------------+---------------------------------------------|
| I3 | Reports modem’s V.42bis ID |
|--------------+---------------------------------------------|
| I4 | Reports modem’s internal ID |
+------------------------------------------------------------+
+------------------------------------------------------------+
| RESULT CODES |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] Qn [cmds] |
|--------------+---------------------------------------------|
| Description: | Enables modem to send result codes to the |
| | DTE |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| Q0 | Result code sending enabled |
|--------------+---------------------------------------------|
| Q1 | Result code sending disabled |
|--------------+---------------------------------------------|
| Q2 | Result code sending enabled in originate |
| | mode |
+------------------------------------------------------------+
EXTENDED AT COMMAND SET
+------------------------------------------------------------+
| SPEAKER VOLUME |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] Ln [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls speaker volume |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| L0 | Low volume setting |
|--------------+---------------------------------------------|
| L1 | Low volume setting |
|--------------+---------------------------------------------|
| í L2 | Medium volume setting |
|--------------+---------------------------------------------|
| L3 | Highest volume setting |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AUTO-RETRAIN |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %En [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls auto-retrain mode |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %E0 | Auto-retrain disabled |
|--------------+---------------------------------------------|
| í %E1 | Auto-retrain enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CLEAR-DOWN SIGNAL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Dn [cmds] |
|--------------+---------------------------------------------|
| Description: | Enables/disables clear down signal to |
| | expidate disconnection |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %D0 | Clear-down signal disabled |
|--------------+---------------------------------------------|
| í %D1 | Clear-down signal enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONNECT MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Nn [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls the type of connection the modem |
| | will operate in |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \N0 | Normal mode enabled |
|--------------+---------------------------------------------|
| \N1 | Direct mode enabled |
|--------------+---------------------------------------------|
| \N2 | MNP reliable mode enabled |
|--------------+---------------------------------------------|
| \N3 | Auto-reliable mode enabled |
|--------------+---------------------------------------------|
| \N4 | V.42 reliable mode enabled |
|--------------+---------------------------------------------|
| \N5 | V.42/MNP mode enabled |
|--------------+---------------------------------------------|
| í \N6 | V.42/MNP/Normal mode enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| EXTENDED RESULT CODES |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Vn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects extended result codes |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \V0 | DCE speed displayed; extended result codes |
| | disabled |
|--------------+---------------------------------------------|
| í \V1 | DCE speed displayed; extended result codes |
| | enabled |
|--------------+---------------------------------------------|
| \V2 | DTE speed displayed; extended result codes |
| | disabled |
|--------------+---------------------------------------------|
| \V3 | DTE speed displayed; extended result codes |
| | enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PASSWORD SELECTION |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \P=n [cmds] |
|--------------+---------------------------------------------|
| Unit: | ASCII |
|--------------+---------------------------------------------|
| Description: | Stores passwords in modem’s NVRAM. Password |
| | is a case sensitive 7 digit string. Modem |
| | is factory set with no password stored. |
| | \P=? displays password |
+------------------------------------------------------------+
+------------------------------------------------------------+
| POWER-ON AUTO CONNECT |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Pn [cmds] |
|--------------+---------------------------------------------|
| Description: | Enables/disables power-on auto connect |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %P0 | Power-on auto connect disabled |
|--------------+---------------------------------------------|
| í %P1 | Power-on auto connect enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SECURITY CALLBACK |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Sn [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls password check and callback |
| | security features |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í %S0 | Password check and callback security |
| | features disabled |
|--------------+---------------------------------------------|
| %S1 | Password check and callback security |
| | features enabled |
|--------------+---------------------------------------------|
| %S2 | Password check enabled. Callback disabled |
+------------------------------------------------------------+
S(status) -REGISTERS
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S14 |
|------------------------------------------------------------|
| Format: | AT [cmds] S14=n [cmds] |
|--------------+---------------------------------------------|
| Range: | 0-174 |
|--------------+---------------------------------------------|
| Unit: | Bit-mapped |
|--------------+---------------------------------------------|
| Description: | Controls echo, result codes and display, |
| | dial mode, and answer/originate mode. |
|--------------+---------------------------------------------|
| Bit | Value | Function |
|------+-------+---------------------------------------------|
| 0 | í 0 | Command echo disabled |
| | | |
| | 1 | Command echo enabled |
|------+-------+---------------------------------------------|
| 1 | 00 | Result codes enabled |
| | | |
| | 01 | Result codes disabled |
| | | |
| | 11 | Result code sending enabled in originate |
| | | mode |
|------+-------+---------------------------------------------|
| 2 | 0 | Not used |
|------+-------+---------------------------------------------|
| 3 | 0 | Display result codes in numeric format |
| | | |
| | í 1 | Display result codes in verbose format |
|------+-------+---------------------------------------------|
| 4 | í 0 | Smart mode |
| | | |
| | 1 | Dumb mode |
|------+-------+---------------------------------------------|
| 5 | 0 | Tone dial enabled |
| | | |
| | 1 | Pulse dial enabled |
|------+-------+---------------------------------------------|
| 6 | 0 | Restore profile 0 on power-up |
| | | |
| | 1 | Restore profile 1 on power-up |
|------+-------+---------------------------------------------|
| 7 | 0 1 | Answer mode enabled |
| | | |
| | | Originate mode enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S16 |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S16=n [cmds] |
|--------------+---------------------------------------------|
| Range: | 0-125 |
|--------------+---------------------------------------------|
| Unit: | Bit-mapped |
|--------------+---------------------------------------------|
| Description: | Controls loopback tests, clear-down signal, |
| | retraining, and result code sending |
|--------------+---------------------------------------------|
| Bit | Value | Function |
|------+-------+---------------------------------------------|
| 0 | 0 | Remote digital loopback not requested |
| | | |
| | 1 | Remote digital loopback requested |
|------+-------+---------------------------------------------|
| 1 | 0 | Clear-down signal disabled |
| | | |
| | í 1 | Clear-down signal enabled |
|------+-------+---------------------------------------------|
| 2 | 0 | Retraining disabled |
| | | |
| | í 1 | Retraining enabled |
|------+-------+---------------------------------------------|
| 3 | 0 | Not used |
|------+-------+---------------------------------------------|
| 4 | 0 | DCE speed displayed; extended result codes |
| | | disabled |
| | 1 | |
| | | DCE speed displayed; extended result codes |
| | | enabled |
|------+-------+---------------------------------------------|
| 5 | 0 | DTE speed displayed; extended result codes |
| | | disabled |
| | 1 | |
| | | DTE speed displayed; extended result codes |
| | | enabled |
|------+-------+---------------------------------------------|
| 6-7 | 0 | Not used |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S21 |
|------------------------------------------------------------|
| Format | AT [cmds] S21=n [cmds] |
|--------------+---------------------------------------------|
| Range: | 0-253 |
|--------------+---------------------------------------------|
| Unit: | Bit-mapped |
|--------------+---------------------------------------------|
| Description: | Selects operating mode, line type, low DTR |
| | action, and the long space disconnect |
| | function. |
|--------------+---------------------------------------------|
| Bit | Value | Function |
|------+-------+---------------------------------------------|
| 0 | í 0 | Originate-only mode disabled |
| | | |
| | 1 | Originate-only mode enabled |
|------+-------+---------------------------------------------|
| 1 | í 0 | Switched line (PSTN/Dial-up) |
| | | |
| | 1 | Leased line |
|------+-------+---------------------------------------------|
| 2 | í 0 | CTS follows RTS |
| | | |
| | 1 | CTS forced high |
|------+-------+---------------------------------------------|
| 4, 3 | 00 | DTR signal ignored |
| | | |
| | 01 | Modem goes to command mode on low DTR |
| | | |
| | í 10 | Modem disconnects on low DTR; Auto-Answer |
| | | is disabled. |
| | 11 | |
| | | Modem is initialized on low DTR |
|------+-------+---------------------------------------------|
| 5 | 0 | DCD forced high |
| | | |
| | í 1 | DCD normal |
|------+-------+---------------------------------------------|
| 6 | í 0 | DSR forced high |
| | | |
| | 1 | DSR normal |
|------+-------+---------------------------------------------|
| 7 | í 0 | Long space disconnect function disabled |
| | | |
| | 1 | Long space disconnect function enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S22 |
|------------------------------------------------------------|
| Format | AT [cmds] S22=n [cmds] |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | Bit-mapped |
|--------------+---------------------------------------------|
| Description: | Controls speaker volume and controls, |
| | limits results codes, and pulse dial |
| | make/break ratio. |
|--------------+---------------------------------------------|
| Bit | Value | Function |
|------+-------+---------------------------------------------|
| 1, 0 | 00 | Low level volume |
| | | |
| | 01 | Low level volume |
| | | |
| | í 10 | Medium level volume |
| | | |
| | 11 | High level volume |
|------+-------+---------------------------------------------|
| 3, 2 | 00 | Speaker off |
| | | |
| | 01 | Speaker off on carrier |
| | | |
| | í 10 | Speaker always on |
| | | |
| | 11 | Speaker on during handshake |
|------+-------+---------------------------------------------|
| 6 - | 000 | Basic result codes only enabled |
| 4 | | |
| | 100 | Basic and connection speed result codes |
| | | enabled |
| | 101 | |
| | | Basic and connection speed result codes and |
| | 110 | dialtone detection enabled |
| | | |
| | í 111 | All result codes except dialtone detection |
| | | enabled |
| | | |
| | | All result codes enabled |
|------+-------+---------------------------------------------|
| 7 | í 0 | 39/61ms at 10pps (North America) |
| | | |
| | 1 | 33/67ms at 10pps (Europe) |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S23 |
|------------------------------------------------------------|
| Format | AT [cmds] S23=n [cmds] |
|--------------+---------------------------------------------|
| Range: | 0-189 |
|--------------+---------------------------------------------|
| Unit: | Bit-mapped |
|--------------+---------------------------------------------|
| Description: | Grants/denies remote digital loopback, |
| | controls DTE rate and parity, and sets |
| | guard tone. |
|--------------+---------------------------------------------|
| Bit | Value | Function |
|------+-------+---------------------------------------------|
| 3 - | 0000 | Sets serial port speed to 0-300bps |
| 0 | | |
| | 0001 | Not used |
| | | |
| | 0010 | Sets serial port speed to 1200bps |
| | | |
| | 0011 | Sets serial port speed to 2400bps |
| | | |
| | 0100 | Sets serial port speed to 4800bps |
| | | |
| | 0101 | Not used |
| | | |
| | 0110 | Sets serial port speed to 9600bps |
| | | |
| | 0111 | Not used |
| | | |
| | 1000 | Sets serial port speed to 14.4Kbps |
| | | |
| | 1001 | Sets serial port speed to 19.2Kbps |
| | | |
| | 1010 | Sets serial port speed to 28.8Kbps |
| | | |
| | 1011 | Sets serial port speed to 38.4Kbps |
| | | |
| | 1100 | Sets serial port speed to 57.6Kbps |
|------+-------+---------------------------------------------|
| 5, 4 | í 00 | Parity even |
| | | |
| | 01 | Space Parity |
| | | |
| | 10 | Parity odd |
| | | |
| | 11 | Mark or No Parity |
|------+-------+---------------------------------------------|
| 7, 6 | í 00 | Guard tone disabled |
| | | |
| | 01 | Guard tone 550Hz enabled |
| | | |
| | 10 | Guard tone 1800Hz enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S27 |
|------------------------------------------------------------|
| Format | AT [cmds] S27=n [cmds] |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | Bit-mapped |
|--------------+---------------------------------------------|
| Description: | Selects synchronous/asynchronous mode, |
| | clock source, and DCE speed |
|--------------+---------------------------------------------|
| Bit | Value | Function |
|------+-------+---------------------------------------------|
| 1, 0 | í 00 | Asynchronous mode, serial port speed |
| | | follows connect speed |
| | 01 | |
| | | Asynchronous off-line command mode and |
| | 10 | synchronous connect mode |
| | | |
| | 11 | Asynchronous off-line command mode; modem |
| | | autodials first number in directory, then |
| | | synchronous connect mode |
| | | |
| | | Asynchronous off-line command mode on low |
| | | DTR, synchronous connect mode on high DTR |
|------+-------+---------------------------------------------|
| 3, 2 | í 00 | Local modem generates transmit clock source |
| | | |
| | 01 | Local DTE generates transmit clock source |
| | | |
| | 10 | Remote DCE/DTE generates transmit clock |
| | | source |
|------+-------+---------------------------------------------|
| 7-4 | 0000 | DCE at 300bps |
| | | |
| | 0001 | Not used |
| | | |
| | 0010 | DCE at 1200bps |
| | | |
| | 0011 | DCE at 2400bps |
| | | |
| | 0100 | DCE at 4800bps |
| | | |
| | 0101 | DCE at 7200bps |
| | | |
| | 0110 | DCE at 9600bps |
| | | |
| | 0111 | DCE at 12.0Kbps |
| | | |
| | 1000 | DCE at 14.4Kbps |
| | | |
| | 1001 | DCE at 16.8Kbps |
| | | |
| | 1010 | DCE at 19.2Kbps |
| | | |
| | 1011 | DCE at 21.6Kbps |
| | | |
| | 1100 | DCE at 24.0Kbps |
| | | |
| | 1101 | DCE at 26.4Kbps |
| | | |
| | 1110 | DCE at 28.8Kbps |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S28 |
|------------------------------------------------------------|
| Format | AT [cmds] S28=n [cmds] |
|--------------+---------------------------------------------|
| Range: | Unidentified |
|--------------+---------------------------------------------|
| Unit: | Bit-mapped |
|--------------+---------------------------------------------|
| Description: | Controls power-on auto connect, security |
| | callback, automatic rate negotiation, and |
| | DCE protocol options |
|--------------+---------------------------------------------|
| Bit | Value | Function |
|------+-------+---------------------------------------------|
| 0 | í 0 | Power-on auto connect disabled |
| | | |
| | 1 | Power-on auto connect enabled |
|------+-------+---------------------------------------------|
| 2, 1 | í 00 | Password check and callback disabled |
| | | |
| | 01 | Password check and callback enabled |
| | | |
| | 11 | Password check enabled; callback disabled |
|------+-------+---------------------------------------------|
| 3 | í 0 | Automatic rate negotiation disabled |
| | | |
| | 1 | Automatic rate negotiation enabled |
|------+-------+---------------------------------------------|
| 4-7 | 0000 | CCITT mode |
| | | |
| | í | Bell mode |
| | 0001 | |
| | | Auto scan mode |
| | 0010 | |
| | | CCITT V.23 mode |
| | 0011 | |
| | | 300bps |
| | 0100 | |
| | | 1200bps |
| | 0101 | |
| | | 2400bps |
| | 0110 | |
| | | 4800bps |
| | 0111 | |
| | | 9600bps |
| | 1000 | |
| | | 14.4Kbps |
| | 1001 | |
| | | 16.8Kbps |
| | 1010 | |
| | | 19.2Kbps |
| | 1011 | |
| | | 21.6Kbps |
| | 1100 | |
| | | 24.0Kbps |
| | 1101 | |
| | | 26.4Kbps |
| | 1110 | |
| | | 28.8Kbps |
| | 1111 | |
+------------------------------------------------------------+