Cabletron Systems CSMIM-T1 manual T19=n Bit Mapped Register, T22=n DSR Timer

Chapter 7: AT Commands and Registers

:T19=n Bit Mapped Register

Where n is an integer from 0 to 255 (see below for the valid values for n). Default is 1.

This command controls MNP link control as follows:

Table 7-15 MNP Link Control

Bit	Function
Position
0	0	Modem keeps a non-MNP10 1200 bps connection if no
		MNP link activity is received from the remote modem.
	1	Modem disconnects a non-MNP10 1200 bps connection if
		no MNP link activity is received from the remote modem
		for two minutes.

:T22=n DSR Timer

Where n is an integer from 0 to 255 (in increments of 12.5 milliseconds). Default is 34 (425 milliseconds).

After DCD and/or CTS drop, :T22 identifies how long the modem waits before DSR is dropped when disconnecting. For example, if \D2 and &C1 are set, when DCD and CTS drop, the modem then waits the amount of time specified by :T22 before dropping DSR.

:T23=n Bit Mapped Register (Table 7-16)

	Table 7-16	:T23 Settings
Bit	Function	Decimal Value
Position
0,1	not used
4	Rate negotiation at	1. At the start of a V.32 connection,
	start-up	makes modem examine line quality
		and set speed accordingly.
		2. Disabled.
6,7	not used

7-56 CSMIM-T1 Hardware Installation Guide