ZOOM TELEPHONICS, INC.
V.34 I
| 
 Modem Type  | 
 Data (synchronous/asynchronous)/Fax  | 
| 
 Maximum Data Rate  | 
 28.8Kbps  | 
| 
 Maximum Fax Rate  | 
 14.4Kbps  | 
| 
 Data Bus  | 
 8-bit ISA  | 
| 
 Fax Class  | 
 Class I & II  | 
| 
 Data Modulation Protocol  | 
 Bell 103A/212A ITU-T V.21, V.22, V.22bis, V.23, V.32, V.32bis, V.34 Rockwell V.FC  | 
| 
 Fax Modulation Protocol  | 
 ITU-T V.17, V.21CH2, V.27ter, V.29  | 
| 
 Error Correction/Compression  | 
 MNP5, V.42, V.42bis  | 

| 
 CONNECTIONS  | |||
| 
 Purpose  | 
 Location  | 
 Purpose  | 
 Location  | 
| 
 Line out  | 
 CN1  | 
 Diagnostic connector  | 
 CN3  | 
| 
 Line in  | 
 CN2  | 
 Speaker  | 
 CN4  | 
| 
 BASE I/O ADDRESS SELECTION  | |||
| 
 Port  | 
 IRQ  | 
 J1  | 
 J2  | 
| 
 COM1: (3F8h)  | 
 4  | 
 Pins 2 & 3, 5 & 6 closed  | 
 Pins 4 & 5 closed  | 
| 
 COM2: (3E8h)  | 
 3  | 
 Pins 1 & 2, 5 & 6 closed  | 
 Pins 1 & 2 closed  | 
| 
 COM3: (2F8h)  | 
 4  | 
 Pins 2 & 3, 4 & 5 closed  | 
 Pins 4 & 5 closed  | 
| 
 COM4: (2E8h)  | 
 3  | 
 Pins 1 & 2, 4 & 5 closed  | 
 Pins 1 & 2 closed  | 
| 
 COM3: (2F8h)  | 
 2  | 
 Pins 2 & 3, 4 & 5 closed  | 
 Pins 2 & 3 closed  | 
| 
 COM4: (2E8h)  | 
 2  | 
 Pins 1 & 2, 4 & 5 closed  | 
 Pins 2 & 3 closed  | 
| 
 COM3: (3E8h)  | 
 5  | 
 Pins 2 & 3, 4 & 5 closed  | 
 Pins 5 & 6 closed  | 
| 
 COM4: (2E8h)  | 
 5  | 
 Pins 1 & 2, 4 & 5 closed  | 
 Pins 5 & 6 closed  | 
Proprietary AT Command Set
See document V1397 for a full command summary.