2 DIDs not working

[jk326598]

We have on-prem, Windows, with one provider (Twilio), and 1 SIP trunk with multiple numbers.

All but two of the DIDs are working. One of them is our main line so it is a problem.

Twilio's error log show

Request timeout with sip:[email protected] . Error communicating with your SIP communications infrastructure: Request timeout with sip:[email protected]

But of course other DIDs on the same trunk work fine. So what gives?

I noticed the 2 DIDs were missing from the SIP Trunk in 3CX. I readded them and then recreated the incoming rules but still no dice.

 

[jk326598]

OK. Turns out something changed with Twilio. They report the IP's you need to allow in the firewall in their docs but obviously something was updated.

After opening the firewall rule to Any the DIDs are working.