We have a 2 extension PBX. Both Extensions have 1 x Yealink, 1 x Mobile app, 1 x WebRTC.
Everything worked fine for the first couple of days, however, now we notice that after every few days, the Yealinks stop ringing. The mobile and webRTC ring, but the Yealink does not.
Both extensions are included in all Ring Groups, and it is correctly ringing those extensions on the mobile and WebRTC.
What is going wrong?