Will Cisco 79xx ork over a VPN

kis2016
Joined: Sun 10 of Sep, 2017

Will Cisco 79xx ork over a VPN

Posted:Sun 10 of Sep, 2017 (21:56 UTC)
I have a working Asterisk FreePBX distro already running 7961 Cisco phones locally, but I cannot get them to work over the VPN. Softphones will work, but not the Cisco's.
Does anyone have these phones working over a VPN or know if they will work.?
The issue seems to lie with the ports. From what I can see in the Asterisk SIP debug, the request to register is received, but Asterisk replies to the received from address (the router the VPN comes from) and not the phones address, even though the Via SIP header contains the correct address which is on another subnet (as it is on the remote end of the VPN)
I think the softphone is working due to rport, does this mean that this handset does not support rport?
Any advise is gratefully received.