PRACTICAL PERIPHERALS, INC.
PC144MT II/MC144MT 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  | 
| 
 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 in  | 
 CN1  | 
 RS-232/422  | 
 CN4  | 
| 
 Line out  | 
 CN2  | 
 Power switch  | 
 SW1  | 
| 
 DC Power  | 
 CN3  | ||
| 
 DIAGNOSTIC LED(S)  | |||
| 
 LED  | 
 Color  | 
 Status  | 
 Condition  | 
| 
 AA  | 
 Red  | 
 On  | 
 Auto-answer enabled  | 
| 
 AA  | 
 Red  | 
 Off  | 
 Auto-answer disabled  | 
| 
 AA  | 
 Red  | 
 Blinking  | 
 Line 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 connected at 4800bps or faster  | 
| 
 HS  | 
 Red  | 
 Off  | 
 Modem connected at less than 4800bps  | 
| 
 TR  | 
 Red  | 
 On  | 
 DTR signal is high  | 
| 
 TR  | 
 Red  | 
 Off  | 
 DTR signal is low  | 
| 
 MR  | 
 Red  | 
 On  | 
 Power on  | 
| 
 MR  | 
 Red  | 
 Off  | 
 Power off  | 
Proprietary Command Set
| 
 COMMAND SET DISABLE  | |
| 
 Type:  | 
 Configuration  | 
| 
 Format:  | 
 AT [cmds] %DUMBn [cmds]  | 
| 
 Example:  | 
 AT %DUMB0 &W <CR> | 
| 
 Description:  | 
 Stops modem from responding to commands.  | 
| Command | 
 Function  | 
| » %DUMB0 | 
 Command set enabled.  | 
| %DUMB1 | 
 Command set disabled.  | 
| 
 REDIAL  | |
| 
 Type:  | 
 Immediate  | 
| 
 Format:  | 
 AT [cmds] DL  | 
| 
 Example:  | 
 AT M0 DL <CR> | 
| 
 Description:  | 
 Redials the last number called.  | 
| 
 REPORT INFORMATION  | |
| 
 Type:  | 
 Immediate  | 
| 
 Format:  | 
 AT [cmds] In [cmds]  | 
| 
 Example:  | 
 AT IO <CR> | 
| 
 Description:  | 
 Commands modem to display information requested.  | 
| 
 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.  |