Avaya Communication Manager Administrator's Manual page 1207

Apply Local Ringback
This field appears for ISDN and H.323 trunk groups when the Carrier Medium field is PRI_BRI.
Valid entries
y/n
BSR Reply-best DISC Cause Value
Servers running Avaya Communication Manager that are polled as resources in a Best Service
Routing application return data to the polling media server or switch in the ISDN DISC
message. Since some cause values do not work over some networks, this field sets the cause
value that your server will return in response to a BSR status poll. If this field is set incorrectly,
incoming status poll calls over this trunk group will be dropped before any data is returned to the
polling server or switch. This field only appears if the UUI IE Treatment field is set to shared.
Valid entries
31 (normal-unspecified)
17 (user-busy)
16 (normal-call-clearing)
!
CAUTION:
In most cases, this field will be set to the appropriate value during installation. If
CAUTION:
you need to change it, your network service provider should be able to help you
choose an appropriate value. Don't change this field without the assistance of
Avaya or your network service provider.
DCS Signaling
Specifies the means used to send the DCS message. This field only appears if the Used for
DCS field entry is y and the Service Type field is anything except dmi-mos or sddn.
Valid entries
bx.25
d-chan
Usage
Enter y to provide a local ringback tone to the caller. The local ringback is
removed when the call is connected. Default is n.
Usage
Enter 31 unless otherwise instructed by Avaya or your network
service provider.
Usage
Enter for the traditional DCS feature.
Enter for the DCS over ISDN-PRI D-channel feature.
ISDN Trunk Group
Issue 2.1 May 2006 1207