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Phones registered to different subscriber cannot communicate

iftikharsyed_2
Level 1
Level 1

We have 4 CUCM in PUB-SUB scenario

1 -PUB and 3 SUBs with cucm 6.0

everything was working fine but from last few days we are facing an issue,

Phones registered with Subscriber A can communiate with phones on Subscriber B and C both

Phones registered to Subscriber B can commnicate with subscriber A but not Subscriber C

Phones registered to sub Subscriber C cannot communicate with subscriber B but they can communicate with subscriber A

There are times when subscriber C phones can communicate with Subscriber B phones but its very rare.

I have verified DB replication status and its 2

I have tried to insert phones from subscriber C Admin page and it works.

There no latency or packet drops issues between Subscriber to Subscriber and Publisher to subscriber.

Any suggestion to solve the issue.

16 Replies 16