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 country protocols)
■ Non-Facility Associated Signaling (NFAS) (supported by country protocol
1 only)
In an FAS Signaling Group, the 24th port of the DS1 Interface circuit pack (for 24
channel interfaces) or the 16th port of the DS1 Interface circuit pack (for 32
channel interfaces) is always the D-channel that carries signaling information for
the other ports (B-channels) on the circuit pack. If a Packet Control circuit pack is
used then only the TN464C or later circuit pack may be used.
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. TN464C or higher
Processor
(TN798)
UDS1
Interface
circuit pack
TN464
T
D
M
b
u
s
2
(Port 0)
(Port 15)
(Port 16)
Pimary
signaling link
Voi ce or d at a
(Port 1)
Voi ce or d at a
(Port 17)
Voi ce or d at a
(Port 31)
Framing
ISDN -TRK
(B-Channel)
ISDN -TRK
(B-Channel)
ISDN -TRK
(B-Channel)
ISDN -TRK
(B-Channel)
ISDN-PLK
(D-Channel)
c
y
dfisd2 RPY 06129
7
Slot 1