Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

calls are breaking

Hi,

we are using MGCP/RTP in our voice network, from few days customers complaing about quality of the calls and calls are breaking, we did few test but couldnt figure out whats a problem.

thanks

asim

3 REPLIES
Bronze

Re: calls are breaking

Hi Asim,

Please make sure that you have qos configured for voice. For voice, it is recommended that you use LLQ. Here is a document that has sample config of LLQ.

http://www.cisco.com/en/US/tech/tk1077/technologies_configuration_example09186a0080101210.shtml

HTH,

Tony

Bronze

Re: calls are breaking

Do the following. Whenever you get bad quality call, press ? (info button) twice on the IP phone. If you see a lot of dropped packets you likely have QoS issue. If you don't see dropped packets you might have issue with PSTN interface (PRI, R2, FXO, etc.)

Bronze

Re: calls are breaking

Dropped packets means that your RTP packets are getting lost somewhere between the 2 endpoints. I could only see it being a qos issue if you have qos configured and the amount of VOIP rtp traffic is exceeding what you have configured in the priority queue. Otherwise, you may need to explore where the packet loss is occurring, whether it be on the WAN or LAN.

286
Views
4
Helpful
3
Replies
CreatePlease login to create content