Is it safe to turn off SIP ALG on our gateway?

[Leckbush]

We experience a random Drop calls sometimes. At least 3 times a day. Do you think the problem was on SIP ALG on router? Is it safe to turn off in terms of the security from the www.


Set-up Local PBX, Local Phones thru a router via NAT

[williamconley]

SIP ALG purpose is to allow initial audio connection by taking into consideration that the signalling is on a different port and may be on a different IP address. Once connected, however, it shouldn't have any effect.

Safe to turn off? Certainly. It may break functionality or it may fix something. Just don't change anything else, and be sure to test thoroughly and turn it back on if you did break something.

[ambiorixg12]

based on my personal expirience this feature cause more problems than it solves, I suggest you read this article https://www.voicehost.co.uk/help/sip-al ... our-router

[williamconley]

based on my personal expirience this feature cause more problems than it solves, I suggest you read this article https://www.voicehost.co.uk/help/sip-al ... our-router

EVERY router is different. The SIP alg is also different between manufacturers. I've had many situations where it needed to be turned off. And many situations where it needed to be turned ON. Thus testing is required to find out if this one is a good witch or a bad witch.