Keepalive messages between CCM and IP Phone missed

Unanswered Question
Sep 25th, 2008

What happen if the single keepalive message between CCM and IP phone is missed? will IP Phone reset? We have the keepalive setting of 30 seconds to primary CCM and 60 seconds to secondary CCM

I have this problem too.
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Jaime Valencia Thu, 09/25/2008 - 04:36

no, phones will try to register to the next CUCM server or unregister if 3 keepalives are missed



if this helps, please rate

Sushil Kumar Katre Thu, 09/25/2008 - 04:40


By Default, IP Phone sends the keepalive messages to the Primary CCM at every 30 seconds and expects a keepalive ack from the CCM.

If the phone missises 3 such keepalive acks continuously, it considers the primary ccm to be down and tries to register to the secondary server.

In your case sinle miss is not going to have any effect. 3 continuous misses will force the phone to re-register.

-> Sushil


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