Avaya DEFINITY Server CSI Maintenance Manual page 1304

Slot 1
Processor
(TN798)
Figure Notes:
1. B- and D-channel messages are
routed over the TDM Bus. For
additional reliability, a duplex
D-channel can be administered for
a signaling group and located on a
different TN464C (or higher) circuit
pack.
Figure 35. DS1 ISDN Trunk Interactions (24 Channel - TN767/464C)
On 32 channel interfaces, any of ports 1-15 and 17-31 on the DS1 interface circuit
pack can be a B-channel. The 16th port may be used as a B-channel or as a
D-channel depending on the type of ISDN-PRI Signaling Group (ISDN-SGR) to
which it belongs. For more details, refer to the ISDN-SGR and DS1-BD/UDS1-BD
Maintenance documentation.
1304
Issue 5 October 2002
DS1
Interface
circuit pack
T
TN767
D
2
M
b
u
s
2. TN767B (or higher) for DS1;
TN464C (or higher) for UDS1
Voice or data ISDN -TRK
(B-Channel)
(Port 1)
Voice or data
ISDN -TRK
(B-Channel)
(Port 23)
Pimary
signaling link
ISDN -PLK
(D-Channel)
(Port 24)
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