08-24-2006 12:36 AM
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
08-24-2006 12:00 PM
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
08-24-2006 01:54 PM
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.)
08-24-2006 03:46 PM
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.
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