Avaya Communication Manager Administrator's Manual page 928

Screen Reference
Interface Companding
The entry in this field must match the companding method used by the far-end switch. This field
does not appear for all DS1 circuit packs.
Valid entries
alaw
mulaw
Interworking Message
This field determines what message the server sends when an incoming ISDN trunk call
interworks (is routed over a non-ISDN trunk group).
Valid entries
PROGress
ALERTing
ITN-C7 Long Timers
This field controls the T302 and T303 timers. It only appears if the Signaling Mode field is
isdn-pri.
Valid entries
y
n
928 Administrator Guide for Avaya Communication Manager
Usage
Enter alaw for E-1 service.
Enter mulaw for T-1 service.
Usage
Normally select this value. PROGress asks the public network to cut
through the B-channel and let the caller hear tones such as ringback or
busy tone provided over the non-ISDN trunk.
ALERTing causes the public network in many countries to play ringback
tone to the caller. Select this value only if the DS1 is connected to the
public network, and it is determined that callers hear silence (rather than
ringback or busy tone) when a call incoming over the DS1 interworks to a
non-ISDN trunk.
Usage
Use if you want to increase the length of the long timers.
Leave n if you want to use the default long timers.