3Com 980/000048/001 manual Modem Specification, Interface PIN Assignments

A	MODEM SPECIFICATION AND
	INTERFACE PIN ASSIGNMENTS

Transmitter / Receiver Specifications

Modulation

CCITT V.34 (33600, 31200, 28800, 26400, 24000, 21600, 19200, 16800, 14400, 12000, 9600, 7200, 4800, 2400 bps)

Non-proprietary V.32terbo (19200, 16800, 14400, 12000, 9600, 7200, 4800 bps)

CCITT V.32bis (14400, 12000, 9600, 7200, 4800 bps)

CCITT V.32 (9600, 4800 bps)

CCITT V.22bis (2400 bps)

CCITT V.22 (1200 bps)

CCITT V.21 (300 bps)

Bell 212A (1200 bps)

Bell 103J (300 bps)

Operation

2-wire or 4-wire synchronous/asynchronous private line, or 2-wire PSTN operation.

Output level

Selectable 0 dBm to -15 dBm. 600 ohms impedance. (UK versions set to -9 dBm for PSTN operation or -13 dBm for private wire.)