Net_Inactivity; Net_Inactivity_Units - Nortel 2000 Software Reference Manual

Chapter 2 Configuration Parameters
Remote Annex Administrator's Guide for UNIX
Book C-80
When disabled, the DSR signal is not required to connect to a slave line,
and DSR is not required to activate a CLI line (see Modem Signals on
page A-99 for details on using need_dsr in conjunction with modem
control). DSR is always considered active on ports that do not have a DSR
signal (ports with partial modem control lines). A Y enables this
parameter, an N disables it. The default is N.

net_inactivity

This asynchronous port parameter defines the amount of time that
network protocols (e.g., SLIP, PPP, ARAP) running on the serial line can
remain inactive before the port is reset. Valid options are 0 to 255; a zero
value indicates off. The default is 0 (off).
Use this parameter in conjunction with net_inactivity_units.
Since the accuracy of the inactivity timer is within five seconds, if
net_inactivity_units is set to seconds, we recommend using a value
for net_inactivity that is a multiple of five.

net_inactivity_units

This asynchronous port parameter defines the units of time used for the
port's inactivity timer. Valid options are minutes or seconds. The default
is minutes.
Use this parameter in conjunction with net_inactivity.
If you are using an ISDN line, it is important to set net_inactivity to a
small value, such as 30, and net_inactivity_units to seconds;
otherwise, you may incur high costs from your ISDN service
provider.
Book C