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Communication Manager Maintenance-Object Repair Procedures
2154 Maintenance Procedures for Avaya Communication Manager 3.0, Media Gateways and Servers
Figure 129: Synchronization Troubleshooting, Fig 5 of 5
F
Slips in entire
Node Carriers
No
Switch Node
Carrier
If equipped, switch PNC and/or switch
node clocks to try and affect symptoms.
Change interfaces (EI, SNI) to reference PN.
Multiple Switch
Yes
CSS?
Are slips in
DS1C remote
PNs?
Yes
Consider all components in the
connection to the DS1C remoted PN.
- SNI/EI boards
- DS1C boards
- Service provider, providing the DS1
Many
Few
If equipped, switch to the standby PNC
and/or tone clocks in the master reference
Slips remain?
D
O
N
E
No
Slips isolated\
E
S
C
A
No
to one PN?
L
A
T
E
Yes
Yes
No
spans to the remote location.
Check switch node carriers for bent pins
or a board that could be affecting the
clock leads.
reference port network to try and affect
Check cabling and transceivers to the
port network with the master reference.
Check cabling and transceivers to the
port network with the master reference.
Check switch node carriers for bent pins
or a board that could be affecting the
clock leads.
Slips on a
single DS1?
No
Yes
Change the DS1 board
Work with the service provider for the span to
Slips
associated with
Verify that span A is operational to the
remote location. Span A provides all
timing to the remote PN.
If equipped, switch PNC and/or tone
clock to try and affect symptoms.
One at a time, replace the EI, SNI, IPSI,
or tone clock for the port network with
slips.
The synchronization issue covers a large portion of the system. The problem is in a
center stage switch (CSS), IPSI or Tone-Clock, EI, SNI, or DS1 spans in port networks (PN)
other than the timing master PN.
This procedure attempts to isolate the problem.
If unduplicated, change the tone-clock in
the master reference PN.
Clear slips recorded against PNs in
multiple switch node carriers.
Clear slips recorded against PNs in
one switch node carrier.
verify line coding, framing, etc.
Change the DS-1 board.
Check the integrity of intervening equipment.
For example Channel Service Units.
From
Fig 4
10
When instructed to do so, perform the steps indicated while slips remain.
Slips in
Slips in a Single
many PNs in a
single Switch Node
Carrier. Don’t include
The service provider must pass timing,
through their network, to the distant
end remote port network.
DS1 remoted
PNs?
the symptoms.
11