Call disconnect after 30 minutes

[ergin.sezgin]

Hi,

We have cucm 8.0.3 and cisco router 2821 (c2800nm-advipservicesk9-mz.151-4.M.bin) , calls disconnect after 30 minutes via sip trunk.

Calls ;

İp phone (Skinny) > Cucm SIP Trunk > 2821 (NAT) > ISP 

debug output from router

debug ip nat sip

Problem

001789: *Feb  2 09:00:53.208 UTC: NAT: SIP: [0] processing BYE message

001790: *Feb  2 09:00:53.208 UTC: NAT: SIP: [0] register:0 door_created:0

001791: *Feb  2 09:00:53.208 UTC: NAT: SIP: [0] translated embedded address CUCM IP->ISP NAT Global IP

001792: *Feb  2 09:00:53.208 UTC: NAT: SIP: [0] register:0 door_created:0

001793: *Feb  2 09:00:53.208 UTC: NAT: SIP: [0] translated embedded address :CUCM IP-> ISP NAT Global IP

Does anyone have idea about this issue?

[Emmanuel Akum · Accepted solution]

Hi,

Try changing the CUCM Service Parameter "SIP Session Expires Timer"  from the default (1800 secconds =30 mininutes) to a higher value; for example 14400 seconds (4 hours).

Pls give feedback afterwards (Let us konw If it helped).

Cheers

Emmanuel

[ergin.sezgin]

Thank you for reply.

[Dalton-Covene]

Hi Emmanuel,

I'd be curious to know if this is truly the resolution or a workaround.  It would seem that modifying the Session Expires timer in CUCM would only increase the time to 4 hours before the call dropped potentially? 

Regards,

Dalton W

[sakoreabhijeet10]

Is this issue resolved, i am facing same issue. would like to know the resolution

[jason-mcgee]

sakoreabhijeet10,

The SIP session timer was the correct solution for that particular issue.