Phones getting unregistered frequently from call Manager

[Vibha Verma]

Hi

We have Call manager in our HQ and some phones in Branch in a different country. From CUCM there is a SIP trunk towards router in branch.

Users in branch occassionally complain of phones getting unregistered.HQ and branch are connected through internet with suffiecient BQ 14 Mbps on each side.

Thanks for helping me out.

Regards

Vibha

[Aaron Harrison]

Hi

If your HQ site users are OK, then your CUCMs are OK.

That means your connectivity to the remote sites is probably the problem. It doesn't matter if you have 'enough' bandwidth, you may have congestion at either end, in between on the Internet, or stability issues on the Internet connection(s) or VPN. 

Regards

Aaron

[Ramprasath Sadasivam]

Hi Vibha,

Are the Remote site phones are registered locally or to HQ CUCM. If its registered local cme there are no chances of getting unregistered unless some local network issue. If the phones are registered on your HQ then it really matter you have to look into the delay/jitter since its on top of VPN. I prefer to apply some kind of QoS to ensure the IP Phones has enough allocated bandwidth.

Also Check the IP Phone , Active/Standby CUCM Ip's

Regards

Ram