Lucent Technologies 8.2 Manual Do Utilizador

Issue 1

April 2000

Screen reference 

739

ISDN trunk group 

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.

■

For R7si and later configurations and R7csi and later configurations, 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.

You cannot use the TN765 circuit pack with ISDN-BRI interfaces.

■

For R7r and later 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. 

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.