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SIP Audio Problems: Difference between revisions
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! Type !! Typical Cause !! Typical fix
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| '''No audio''' || On mute, handset loose cable?! Firewall/NAT blocking traffic || Investigate firewall/NAT/ALG
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| '''Short silent gaps''' || Packet loss || Check internet quality
= 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 ==
* (if non-A&A internet) Try a different Internet connection, including using a different ISP
* Try non-NAT
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* If it's only the incoming audio that is broken, look for the jitter buffer setting on the SIP device and increase it bit by bit.
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