I've been having the following issue with firmware versions 11.x.x for Cisco 8851 3PCC IP Phone. I can pair my bluetooth headset just fine with the 8851, but after a few days the pairing is lost, and I'm unable to reconnect. More specifically, these are the steps I've taken to no avail:
The only solution I have found so far is to reset 8851 phone to factory defaults. In that case, I am able to pair with the headset again, until the issue manifests after a few days. I haven't been able to determine what triggers this, but the last time it happened I was on a call which I disconnected using controls on the phone, not on the headset. Almost immediately after hanging up I heard a disconnect tone through the headset. I'm not sure if this in anyway triggered the issue, but I thought I'd mention it anyway, with reservations.
Needless to say this behaviour is not encountered when using the headset with other devices, e.g. mobile phone and laptop, both of which connect via bluetooth as well.
I also have an issue with the mute function not syncing between phone and headset, but I think I'll start a new thread for that issue.
My headset model is Jabra Evolve 75+ UC. Cisco 8851 is listed as supported by Jabra in their support pages, and Cisco lists several Jabra models as supported as well, although I haven't been able to find such a list specifically for 8851 3PCC.
This is becoming really annoying, can I expect a fix in a future firmware release? I'd be glad to provide any further information if needed. Thank you.
Can someone from Cisco please investigate whether this is a known issue? I realize support is subject to active TAC subscriptions, but this is clearly a firmware bug and it's very frustrating. Thank you.
Can you get a PRT from the phone when the issue is seen?
Info->Debug Info->Generate PRT
I have the PRT file, generated immediately after a failed bluetooth connection attempt. Is there any way of sending this to you privately? I checked the contents and it does include some sensitive information. Thank you.
Thanks. Can you please generate another PRT after setting the debug level to DEBUG. The option can be found on Voice->System->Optional Network Configuration->Debug Level->DEBUG
After setting the debug level to DEBUG try to connect the headset and after it fails then generate the PRT.
I enabled the debug level as per your instructions and rebooted the phone, aiming to clear irrelevant and/or past output in the logs. After the reboot, the headset connected successfully, with no user intervention.
Please note that when I had this problem before, a reboot wouldn't remedy the issue: only a factory reset seemed to work around it.
In any case, I'll wait for the problem to manifest again, and collect the PRT then.
Sure. Whenever you see the issue again, do try to connect the device from the menu and then generate the PRT.
The issue manifested again. I have generated a PRT and sent it to you in the e-mail address you provided. Thanks.
Was there any particular action performed after which the issue started? Did you do this step again?
"Disconnected call from phone instead of headset?"