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Calls Drop Out

salamislimy
Beginner
Beginner

Our office internet is shared with another company in the same building. Its a 20M/20M internet connection. Both our companies have our own UC 540 and separated by Vlans. Our company has 2 Vlans and the other has 2 Vlans. One of data and one for voice.

We have done QoS for our voice network.

We have no issues with our out bound calls, but for incoming calls, when the call duration is around 10 mins or so the call just drops out.

I have done debug, but havent found anything that points to this issue.

Trying to find a work around or solution for this issue. Should I get a separate internet connection for the voice alone?

2 Replies 2

salamislimy
Beginner
Beginner

2 UC on one internet connection

Bill Mungaven
Beginner
Beginner

Check your maximum call duration timer parameter in System -> Service Parameter Configuration. Select the server from the dropdown list (I have 1 Publisher and 6 Subscribers), select the Cisco CallManager (Active) service. Look for Maximum Call Duration Timer under the Clusterwide Parameters (Feature - General). My value and the default/suggested value is 720 (12 hours). Yours might be set at 10. If it's something other than 10, I don't know what else might drop calls after 10 minutes consistently. I believe this parameter applies to both inbound and outbound calls.

From the help:

This parameter specifies the minutes that a call can remain active before Cisco CallManager clears it. A value of zero disables the timer.
 This is a required field.
 Default:  720
 Minimum:  0
 Maximum:  35791
 Unit: min

Bill

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