I have built a FreePBX system.
Everything goes wonderfully without any problems, the desktop phones
(Yealink) are working fine.
But I also have a multi-cell DECT system from Gigabit (N720 DM) with a manager and some base stations for seamless handover/roaming of the devices.
There are indeed some inconsistent problems here.
Sometimes the DECT devices cannot call or are not reachable.
Often the devices continue to ring even though they have been answered or rejected.
Rarely you don’t hear any speech or the call starts very delayed.
But as soon as you get a call through, the voice quality is normal.
Does it sound more like a problem with SIP signaling than a problem with RTP transmission?
The problems all occur with internal telephony.
The only difference between the settings in the extensions is that ‚Media Encryption Optimistic’ is enabled, because the Gigaset devices cannot use SRTP (with media encryption enabled).
So are there any settings you need/should set for wireless telephony (especially DECT)?
Or does anybody have an idea what could cause these problems?
Many greetings and many thanks.