FreePBX - 15 Minute Disconnection

VoIP_n00b

We have a FreePBX system connected to flowroute. Once in a while, someone gets disconnected at exactly 15 minutes. Anyone seen this before?

VoIP_n00b

I should mention, it's not all calls - just some of them, which has me even more puzzled.

Skyetel

Tips:

Make sure your firewall is not killing the open UDP port. We see this a lot. Especially if the users are working from home.
Lower your SIP Registration and NAT Keepalive (or enable the NAT Keepalive if its disabled)
Insure you have NAT = Yes in the extension settings
Wait for @JaredBusch - he'll probably know what the issue is

VoIP_n00b

@Skyetel Thanks! Does the fact that it is exactly 15 minutes give any clues?

Dashrender

what does Flowroute say?
also, what kind of Firewall?

is FreePBX locally hosted or cloud hosted?

VoIP_n00b

@Dashrender said in FreePBX - 15 Minute Disconnection:

what does Flowroute say?

Not much. They keep wanting more examples, but it happens at random, so hard to do that.

also, what kind of Firewall?

Cisco ASA 5505

is FreePBX locally hosted or cloud hosted?

Locally

JaredBusch

@Skyetel said in FreePBX - 15 Minute Disconnection:

Tips:

Make sure your firewall is not killing the open UDP port. We see this a lot. Especially if the users are working from home.

Lower your SIP Registration and NAT Keepalive (or enable the NAT Keepalive if its disabled)

Insure you have NAT = Yes in the extension settings

Wait for @JaredBusch - he'll probably know what the issue is

Almost certainly #1

#2 will mitigate it,

scottalanmiller

@VoIP_n00b said in FreePBX - 15 Minute Disconnection:

@Skyetel Thanks! Does the fact that it is exactly 15 minutes give any clues?

Less likely to be the UDP Threshold issue, but still possible.

JaredBusch

I'm going to assume you used a chan_sip trunk.

Fist look at the chan_sip settings for NAT and the SIP signalling. Though nothing on the signaling side is set to 15 minutes. But since you need to check the NAT setting, check the other settings.

Now look at the RTP settings, this is set to 15 minutes by default