Cabletron Systems CSMIM-T1 - Manual (Page 182)

Chapter 7: AT Commands and Registers
7-56 CSMIM-T1 Hardware Installation Guide
: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
: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
Position
Function
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.
Bit
Position
Function Decimal Value
0,1 not used
4 Rate negotiation at
start-up 1. At the start of a V.32 connection,
makes modem examine line quality
and set speed accordingly.
2. Disabled.
6,7 not used