Help with registering Cisco 7940s in FreePBX

[zirophyz (Brendan)]

If you’re using PJSIP, have a look at this forum post where I went through various problems I had with PJSIP and Cisco 794x’s

Cisco 7940 registration problem RESOLVED

Hi, Been working on migrating over to Asterisk 13 / FPBX 12, and wanting to control my Cisco endpoints with OSS EPM. Starting with the phones that have support out of the box - the Cisco 7940. Using a PJSIP extension, I can confirm that the extensions are working via a softphone. When I fire up the Cisco 7940 it has trouble registering. Watching a tcpdump I can see… Phone sends a REGISTER with no auth details (as normal) Asterisk replies with 401 UNAUTHORIZED (the REGSITER challenge, norm…

Let me know if you need any more assistance.