Cabletron Systems CSMIM-T1 manual T2=n Timer for V.21 Mode During Multi-Protocol Answer

Registers

This command requires 1200 bps or higher operation with %F0%L1 set.

Determines how long the modem attempts to establish a V.32, V.22bis, or V.22 connection before attempting to establish a V.21 connection. During this period, the modem sends V.22bis or V.22 carrier.

:T2=n Timer for V.21 Mode During Multi-Protocol Answer

NOTE

Where n is an integer from 0 to 255 representing tenths of a second. Default is 0 (V.23 half-duplex disabled).

This command requires 1200 bps or higher operation with %F0%L1\N3 set.

When the modem is unable to establish a V.32, V.22bis, or a V.22 connection, :T2 determines how long the modem attempts to establish a V.21 connection before attempting a V.23 half-duplex connection. During this period, the modem sends V.21 carrier.

Set :T2=20 (2 seconds) when including V.23 half duplex in the multi-protocol answer modem.

If :T2 is set to 0, V.23 half-duplex connections are not attempted. The modem attempts to establish a connection for the length of time specified by register S7 before hanging up.

:T3=n Timer for V.21 and V.23 Answer Tone Duration

Where n is an integer from 0 to 33 (tenths of a second) Default is 33 (3.3 seconds).

This command requires either V.21 operation (%F0 is set and the modem speed is 300 bps) or V.23 operation (%Fn, where n=1, 2, or 3).

When the answering modem is set for V.21 or V.23 operation, :T3 determines the duration of the V.25 answer tone that is sent to the originating modem. When :T3 is set to 0, no answer tone is sent. All V.21 and V.23 answers begin with two seconds of silence unless :T3 is set to 0.

CSMIM-T1 Hardware Installation Guide 7-51