Reliability issues with headset control via EHS

[andrewm]

Before switching to Yealink, I'd been using 2 wireless headsets with remote handset lifters. These worked flawlessly.

Since switching phones over to T38's, the operation of the headsets via the EHS 36 is not so reliable. It seems to pertain to the call control, rather than the audio.

GN Netcom 9350 + T38: Loses the ability to control the phone from the headset. Rebooting the phone temporarily re-establishes a working system - it won't last more than a day though.

Plantronics Savi + T38: Random phone hangups; one time it was on successive calls, around 10 seconds into the call. Rebooted the headset and it all worked fine again.

In both cases T38,s were running 38.70.0.115. EHS Hardware Version is 48.0.0.0, & EHS Firmware Version us 1.16.0.0

Again, never any control problems using old handset lifter - only since switching to T38's.