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Disable SIP ALG: Difference between revisions
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An ALG is an 'Application Layer Gateway'. Typically it's software in a router that inspects VoIP traffic and modifies the information inside in order to try and help make VoIP work better. In practice they tend to make thins worse. you may end up with one way audio, no audio or be unable to register.
Disabling an ALG on your router may well help with any VoIP problems. Here are some notes on various routers that we've come across.▼
▲Disabling an ALG on your router may well help with any VoIP problems. Here are some notes on various routers that we've come across
#click on APPLY, then click on SAVE CONFIG
== Neatgear==
From Wan Setup Menu: go to NAT Filtering and uncheck the box next to "Disable SIP ALG"
==Vigor2750, Vigor2130==
telnet in and:
kmodule_ctl nf_nat_sip disable
kmodule_ctl nf_conntrack_sip disable
==Vigor2760==
In the web interface, under Network > NAT, click the ALG tab then set the SIP ALG off
*More info on: [http://www.voip-info.org/wiki/view/Routers+SIP+ALG VoIP-Info]
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