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 [Image] 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 & Pins 4 & 5 closed 6 closed COM2: (3E8h) 3 Pins 1 & 2, 5 & Pins 1 & 2 closed 6 closed COM3: (2F8h) 4 Pins 2 & 3, 4 & Pins 4 & 5 closed 5 closed COM4: (2E8h) 3 Pins 1 & 2, 4 & Pins 1 & 2 closed 5 closed COM3: (2F8h) 2 Pins 2 & 3, 4 & Pins 2 & 3 closed 5 closed COM4: (2E8h) 2 Pins 1 & 2, 4 & Pins 2 & 3 closed 5 closed COM3: (3E8h) 5 Pins 2 & 3, 4 & Pins 5 & 6 closed 5 closed COM4: (2E8h) 5 Pins 1 & 2, 4 & Pins 5 & 6 closed 5 closed Proprietary AT Command Set See document V1397 for a full command summary.