I have UCM 126.96.36.199900-7 installed running firmware version 188.8.131.52 on my 7921 and 7925 wireless phones.
Since updating, an issue has appeared in which the 7921's will switch to docking mode when placed on our charging cradles (expected, of course), but when removing it from the cradle, it will not switch that mode off until the phone is rebooted.
I'm assuming this to be a bug in the 184.108.40.206 firmware, since I've never had this issue before AND it's happening on all of my 7921 phones but not the 7925s (no docking cradle). I can live with waiting for an update to correct the issue, but I'm seeking a workaround for the time being.
Is there a way to universally disable the docking mode permanently in UCM or on the devices?
Is there a way to manually switch that mode off?
We are running into the same issue. For us, when the 7921 phones don't come out of docking mode neither person on the call can hear each other. A reboot of the phone fixes it temporarily until its set back in the docking station.
I've also found in our case that this is so far limited to 7921 models with certain hardware revisions - 2.6 and 4.6. I've since downgraded back to 220.127.116.11 for those inparticular and the problem is resolved. I've left the rest on 18.104.22.168 to see if they start to experience the issue also.
I have a case open with Cisco so we'll see what they say.
I opened a case with them after not getting any responses on this thread. It's good to know I'm not alone though, and that's an excellent observation on the hardware revision. Looks like two of the phones reported with this issue are hardware revision 2.6, so I'm betting you may be onto something there. I'll post any feedback from TAC on this thread.