DEFINITY ECS Release 8.2 Maintenance for R8.2csi
555-233-119 Issue 1
April 2000
Maintenance Objects
3-719ISDN-SGR (ISDN-PRI Signaling Group)
3
Figure 3-24. ISDN-PRI Signaling Link Port Interactions (32-Channel - TN464)
There are two types of Signaling Groups:
Facility Associated Signaling (FAS) (supported by all countr y protocols)
Non-Facility Associated Signaling (NFAS) (supported by c ountry protocol
1 only)
In an FAS Signaling Group, the 24th port of the DS1 Interface circuit pac k (for 24
channel interfaces) or the 16th p ort of the DS1 Interface circuit p ack (for 32
channel interfaces) is always the D-c hannel that carries signaling information for
the other ports (B-channels) on the c ircuit pack. If a Packet Control c ircuit pack is
used then only the TN464C or later circuit p ack may be used.
Figure Notes
1. B- and D-channel messag es are
routed over the TDM Bus. For
additional reliability, a dup lex
D-channel can be ad ministered for
a signaling group and located on a
different TN464C (or higher) circuit
pack.
2. TN464C or higher
Processor
(TN798) UDS1
Interface
circuit pack
TN464
T
D
M
b
u
s
2
(Port0)
(Port15)
(Port16)
Pimary
signalinglink
Voice o r dat a
(Port1)
Voice o r dat a
(Port17)
Voice o r dat a
(Port31)
Framing
ISDN- TRK
(B-Channel)
ISDN- TRK
(B-Channel)
ISDN- TRK
(B-Channel)
ISDN- TRK
(B-Channel)
ISDN-PLK
(D-Channel)
c
y
dfisd2RPY 0612 9
7
Slot 1