555-233-119
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Issue 5 October 2002
Figure 33.
ISDN-PRI Signaling Link Port Interactions (24 Channel -
TN767/464C)
For 32-channel interfaces, ports 1-15 and 17-31 on the circuit pack are used as
B-channels. The 16th port may be used as a B-channel or as a D-channel
depending on the type of Signaling Group used (see
Figure 34
).
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.
2. TN767B (or higher) or TN464C (or
higher)
Processor
(TN798)
Slot 1
DS1
Interface
circuit pack
TN767
T
D
M
b
u
s
2
(Port 24)
Pimary
signaling link
Voice or data
(Port 1)
Voice or data
(Port 23)
ISDN -TRK
(B-Channel)
ISDN -TRK
(B-Channel)
ISDN -PLK
(D-Channel)
cydfisd3 RPY 061297