SIP Audio Problems: Difference between revisions
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! Type !! Typical Cause !! Typical fix |
! Type !! Typical Cause !! Typical fix |
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| '''No audio''' || On mute?! Firewall/NAT blocking traffic || Investigate firewall/NAT/ALG |
| '''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 |
| '''Short silent gaps''' || Packet loss || Check internet quality |
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= Checklist: = |
= Checklist: = |
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== NAT == |
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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. |
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== Things to figure out == |
== Things to figure out == |
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* (if non-A&A internet) Try a different Internet connection, including using a different ISP |
* (if non-A&A internet) Try a different Internet connection, including using a different ISP |
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* Try non-NAT |
* Try non-NAT |
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* Disable/Enable any SIP ALG on the broadband router - if it's a feature |
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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. |
* 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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