Avaya Definity SI - Page 1754

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
Packet Bus
To far end
switch hardware
Packet
Control
Circuit
Pack
(TN778)
UDS1
Interface
Circuit
Pack
(TN464*)
*TN464 C or later