How to get synchroniztion on dual E1 port module

[Vyacheslav_Maliev]

Hi! We have voice gateway ISR2821 with dual E1 port module and two PRI from  different ISPs connected. It is configured as below:

clock timezone GMT 3 0
network-clock-participate wic 0

controller E1 0/0/0
 pri-group timeslots 1-31 service mgcp
!
controller E1 0/0/1
 pri-group timeslots 1-31 service mgcp

The first controller works good and the second one have Slip errors. How to synchronize both?

[Manish Gogna]

Hi,

Please check this doc to fix this issue

https://supportforums.cisco.com/document/19291/slip-errors-are-seen-t1-pri-where-slip-secs-counter-continuously-increases

Manish

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