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SIP Audio Problems: Difference between revisions
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| '''No audio after a few minutes''' || Firewall/NAT/session timeouts || Investigate firewall/NAT/ALG
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* Calling *100 will play a continuous 1Khz tone - if the audio breaks up then there is a problem
= Checklist: =
== NAT ==
If your phones are are on a 192.168.x.x or 10.x.x.x IP address then they will be behind a NAT router. Our [[VoIP NAT|VoIP and NAT]] page has information and tips if your phones are behind a NAT router and you have problems.
== Things to figure out ==
== Things to investigate ==
* Check the quality of the internet connection
* Calling *100 will play a continuous 1Khz tone - if the audio breaks up then there is a problem
* Check the CQM graph (if using A&A for the internet connection)
* Check for other traffic on the internet connection - spikes in traffic can affect audio
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