PRACTICAL PERIPHERALS, INC.
PM144MT II
Modem Type | Data (synchronous/asynchronous)/Fax |
Maximum Data Rate | 14.4Kbps |
Maximum Fax Rate | 14.4Kbps |
Data Bus | External |
Fax Class | Class I & II |
Data Modulation Protocol | Bell 103A/212A ITU-T V.21, V.22, V.22bis, V.32, V.32bis Rockwell V.FC |
Fax Modulation Protocol | ITU-T V.17, V.27ter, V.29 |
Error Correction/Compression | MNP5, V.42, V.42bis |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Line out | CN1 | DC power | CN4 |
Line in | CN2 | Power switch | SW1 |
RS-232/422 | CN3 |
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 |
RX | Red | On | Modem is receiving data |
RX | Red | Off | Modem is not receiving data |
TX | Red | On | Modem is transmitting data |
TX | Red | Off | Modem is not transmitting data |
CD | Red | On | Carrier signal detected |
CD | Red | Off | Carrier signal not detected |
CD | Red | Blinking | Modem is retraining |
OH | Red | On | Modem is off-hook |
OH | Red | Off | Modem is on-hook |
HS | Red | On | Modem is operating at 4800bps or faster |
HS | Red | Off | Modem is operating at slower than 4800bps |
TR | Red | On | DTR signal is high |
TR | Red | Off | DTR signal is low |
MR | Red | On | Power is on |
MR | Red | Off | Power is off |
Proprietary AT Command Set
COMMAND SET | |
Type: | Configuration |
Format: | AT [cmds] %DUMBn [cmds] |
Example: | AT %DUMB1 <CR> |
Description: | Disables the AT command set. |
Note: | The AT command set is always active for the first 20 seconds after the modem is powered up. AT%DUMB0 can be entered during this time period to re-enable the command set. |
Command | Function |
» %DUMB0 | Command set enabled. |
%DUMB1 | Command set disabled. |
EXTENDED RING | |||
Format: | AT [cmds] S101=n [cmds] | ||
Example: | ATS101=40 <CR> | ||
Default: | 0 | ||
Range: | 0 - 255 | ||
Unit: | Bit-mapped | ||
Description: | Selects the response to extended ring types. | ||
Bit | Value | Function | |
0 | » 0 1 | Do not respond to ring type A. Respond to ring type A. | |
1 | » 0 1 | Do not respond to ring type B. Respond to ring type B. | |
2 | » 0 1 | Do not respond to ring type C. Respond to ring type C. | |
3 | » 0 1 | Do not respond to ring type D. Respond to ring type D. | |
4 | » 0 1 | Do not respond to ring type E. Respond to ring type E. | |
5 | » 0 1 | Do not respond to ring type F. Respond to ring type F. | |
6 | » 0 1 | Do not respond to ring type G. Respond to ring type G. | |
7 | » 0 1 | Report RING for all ring types. Report RING n where n is the ring type. |
REDIAL | |
Type: | Immediate |
Format: | AT [cmds] DL |
Example: | AT M1 DL <CR> |
Description: | Redials the last number dialed. |
REPORT INFORMATION | |
Type: | Immediate |
Format: | AT [cmds] In |
Example: | AT I1 &W <CR> |
Description: | Displays modem properties. |
Command | Function |
I0 | Reports modem model and speed. |
I1 | Reports checksum number. |
I2 | Reports checksum result. |
I3 | Reports firmware version. |
I4 | Reports current command settings. |
V.22 PROBE REJECT TIME | |
Type: | Register |
Format: | AT [cmds] S97=n [cmds] |
Example: | ATS97=15 <CR> |
Default: | 30 |
Range: | 15-70 |
Unit: | .1 second |
Description: | Sets the time for which the modem will reject the V.22/V.22bis probe signal when in V.32 mode. |