Demand test descriptions and error codes - Avaya Support

Figure 80: Synchronization Troubleshooting, Fig 5 of 5
F
Slips in entire
CSS?
No
Slips in
Multiple Switch
Node Carriers
Yes
Slips in a Single
Switch Node
Carrier
Are slips in
DS1C remote
PNs?
Yes
Clear slips recorded against PNs in
multiple switch node carriers.
If equipped, switch to the standby PNC
and/or tone clocks in the master reference
reference port network to try and affect
the symptoms.
Clear slips recorded against PNs in
one switch node carrier.
11
If equipped, switch PNC and/or switch
node clocks to try and affect symptoms.
Slips
associated with
many PNs in a Many Check cabling and transceivers to the
single Switch Node port network with the master reference.
Carrier. Don’t include
DS1 remoted
Check switch node carriers for bent pins
PNs?
or a board that could be affecting the
clock leads.
Change interfaces (EI, SNI) to reference PN.
Few
Slips on a
single DS1?
No
No
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.
When instructed to do so, perform the steps indicated while slips remain.
From
Fig 4
Yes
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.
If unduplicated, change the tone-clock in
the master reference PN.
Work with the service provider for the span to
verify line coding, framing, etc.
Check the integrity of intervening equipment.
For example Chel Service Units.
Change the DS-1 board.
Consider all components in the
connection to the DS1C remoted PN.
- SNI/EI boards
- DS1C boards
- Service provider, providing the DS1
spans to the remote location.
Verify that span A is operational to the
remote location. Span A provides all
timing to the remote PN.
The service provider must pass timing,
through their network, to the distant
end remote port network.
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.
Slips remain?
Slips isolated\
to one PN?
904 Maintenance Alarms for Communication Manager, Media Gateways and Servers
10
Yes
Yes
No
No
D
O
N
E
E
S
C
A
L
A
T
E
Change the DS1 board