Avaya DEFINITY Server CSI Maintenance Manual page 1282

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 31. ISDN-PRI Signaling Link Port Interactions (32-Channel - TN464)
The TN767 DS1 interface is used for 24 channel 1.544 Mbps systems. The
TN464C or later can be used for either 24 or 32 channel systems. The 32-channel
(31 DS0 channels + 1 framing channel on a 2.048 Mbps link) are only supported
on TN464 series circuit packs. A description of these circuit packs appears in
DS1-BD or UDS1-BD maintenance documentation.
In a 24-channel system, the DS1 ISDN Trunk or PRI endpoint port (B-channels)
may use any of the first 23 ports. The ISDN-PRI Signaling Link Port must be the
24th port (See
24th port may be used as a B-channel. Refer to the ISDN-PRI Signaling Group
(ISDN-SGR) Maintenance documentation for further details.
1282
Issue 5 October 2002
T
D
M
b
u
s
Figure 32 on page 1283). In certain configurations (NFAS), the
(Port 0)
Voice or data
UDS1
(Port 1)
Interface
circuit pack
TN464
(Port 15)
2
Pimary
signaling link
(Port 16)
Voice or data
(Port 17)
Voice or data
(Port 31)
2. TN464C or higher
Framing
ISDN -TRK
(B-Channel)
ISDN -TRK
(B-Channel)
ISDN -PLK
(D-Channel)
ISDN -TRK
(B-Channel)
ISDN -TRK
(B-Channel)
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