I have an user defined intercom configured and connected it to an akuvox E12W Doorphone.
Everything is working fine except for the external audio.
My Doorphone is registered to an external SIP server (sip2sip.info) and my host for the external audio is configured as sip2sip.info.
for the user i entered the user that the doorphone uses to register on the SIP server.
I forwarded port 5060-5061 to the ip of my doorphone in the router.
i do get the video when on 4G, but the audio does not connect.
Anyone who can help me to get this working?