I have 2 server pub-sub call manager 6.1 running for 100 phones. suddenly it was brought to notice that external calls (incoming/outgoing) when transferred or conferenced are dropped. This happens to random extensions.
When investigated I found inbuilt CFB and MTP on one of the servers is having unknown status for registration. Other CFB and MTP is registered.
I guess the random selection of MTP/CFB from either server is dropping the calls. I tried to reboot the server but didnt help
Can some one have any idea about troubleshooting this further.
thanks and regards
Running one one server, not activated on other. I wonder why not activated. But earlier never had this problem. System is in same state for more than 3-4 yrs now.
That explains why the CFB/MTP is not registered. You could take a look at the MRG's in the MRGL that are associated to the phones which have the issue and see if they have a CFB which is registered.
That means that those MRGs are not associated to any device. Are you sure there have been no changes to the system?