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Maintenance Object Repair Procedures
555-233-123 10-968 Issue 4 May 2002
Primary Signaling Link Hardware Check (#636)
The ISDN-PRI Signaling Link Port itself depends on the health of the DS1/UDS1
Interface circuit pack on which it resides. This test will fail if there are problems
with either the ISDN-PRI Primary D-channel port or the DS1/UDS1 circuit pack.
The ISDN-PRI Primary D-channel also depends on the health of either the
Processor Interface Link or the Processor Control circuit pack providing
connectivity to the DS1/UDS1 circuit pack.
If there are problems with the ISDN-PRI Signaling Link, also investigate the
DS1/UDS1 circuit pack (DS1-BD/UDS1-BD) and the Processor Interface Link or
Packet Control (PI-LINK/PACCON) dependent upon which is used
Figure 10-51. Primary Signaling Link Hardware Check (Test #636)
Figure 10-52. PRI over PACCON Primary Signaling Link Hardware Check
(Test #636)
PI
TDM
BUS
DS1/UDS1
TO FAR-END
SWITCH HARDWARE
(TN765)
CIRCUIT
PACK CIRCUIT
PACK
INTERFACE
P a c k e t B u s
T o fa r e n d
s w i t c h h a r d w a r e
P a c k e t
C o n t r o l
C ir c u it
P a c k
( T N 7 7 8 )
U D S 1
I n t e r fa c e
C ir c u it
P a c k
( T N 4 6 4 * )
* T N 4 6 4 C o r l a t e r