MAXTECH CORPORATION
14.4 VOICE/FAXMODEM EXTERNAL
| 
 Card Type  | 
 Modem(synchronous/asynchronous)  | 
| 
 Chip Set  | 
 Unidentified  | 
| 
 I/O Options  | 
 Voice  | 
| 
 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.21CH2, V.27ter, V.29  | 
| 
 Error Correction/Compression  | 
 MNP5, V.42, V.42bis  | 

| 
 CONNECTIONS  | ||||||
| 
 Function  | 
 Label  | 
 Function  | 
 Label  | |||
| 
 Line in  | 
 CN1  | 
 DC power  | 
 CN4  | |||
| 
 Line out  | 
 CN2  | 
 Power switch  | 
 SW1  | |||
| 
 RS-232/422  | 
 CN3  | |||||
| 
 USER CONFIGURABLE SETTINGS  | ||
| 
 Setting  | 
 Label  | 
 Position  | 
| 
 í AT commands enabled | 
 JP1  | 
 Pins 2 & 3 closed  | 
| 
 AT commands disabled  | 
 JP1  | 
 Pins 1 & 2 closed  | 
| 
 DIAGNOSTIC LED(S)  | |||
| 
 LED  | 
 Color  | 
 Status  | 
 Condition  | 
| 
 TST  | 
 Red  | 
 On  | 
 Normal operation  | 
| 
 TST  | 
 Red  | 
 Blinking  | 
 Error detected and corrected  | 
| 
 HS  | 
 Red  | 
 On  | 
 Modem is operating at 4800bps or faster  | 
| 
 HS  | 
 Red  | 
 Off  | 
 Modem is operating at slower than 4800bps  | 
| 
 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  | 
| 
 RD  | 
 Red  | 
 On  | 
 Modem is receiving data  | 
| 
 RD  | 
 Red  | 
 Off  | 
 Modem is not receiving data  | 
| 
 SD  | 
 Red  | 
 On  | 
 Modem is transmitting data  | 
| 
 SD  | 
 Red  | 
 Off  | 
 Modem is not transmitting data  | 
| 
 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
See document V1788 for a full command summary.