Avaya Communication Manager Administrator's Manual page 965

Hardware requirements
ISDN-BRI interfaces are supported by the TN2185 Trunk-side BRI circuit pack (for implementing the
user side of the BRI interface) and by the TN556B or TN556C ISDN-BRI Line circuit pack or the
TN2198 ISDN BRI (U-LT) Line circuit pack (for the network side of the BRI interface). The TN2464
circuit supports T1 and E1 digital facilities.
ISDN-PRI interfaces are supported by the TN767 circuit pack (for assignment of a T1 signaling link and
up to 24 ISDN-PRI trunk group members), or the TN464C or later circuit pack (for assignment of a T1 or
E1 signaling link and up to 24 or 31 ISDN-PRI trunk group members, respectively). The TN2464 and
TN2207 circuit pack can also be used with ISDN-PRI.
•
The D-channel for ISDN-PRI interfaces switches through either the TN765 Processor Interface
(PI) circuit pack or the TN778 Packet Control (PACCON) circuit pack. The D-channel for
ISDN-BRI interfaces only switches through the TN778 Packet Control (PACCON) circuit pack.
NOTE:
You cannot use the TN765 circuit pack with ISDN-BRI interfaces.
•
For DEFINITY Server R configurations, the D-channel switches through the TN1655 Packet
Interface (PKTINT) circuit pack.
•
A TN780 or TN2182 Tone Clock circuit pack provides synchronization for the DS1 circuit pack.
NOTE:
The TN767 cannot be used to carry the D-channel if either the TN778 (PACCON) or
TN1655 (PKTINT) circuit packs are used to switch the D-channel. However, in these
circumstances, the TN767 can be used for NFAS interfaces carrying only B-channels.
Administrator's Guide for Avaya Communication Manager
November 2003
Screen Reference
ISDN Trunk Group
965