[cisco-voip] 69XX Unrecoverable Phantom Hold Issue

[Brian Meade]

I've seen this on the 7861s.  How many phones have the shared line?

I would get console logs from all phones with the shared line and
CallManager traces for the time period you see the next phantom call.  That
way the call can be tracked in CallManager to where it came from and why it
didn't clear.

Brian


On Tue, Jun 3, 2014 at 10:44 AM, Gabriel Jackson <gdjackso at oakland.edu>
wrote:

> We are currently experiencing an issue on some Cisco 6945 phones which
> results in devices showing a shared line as on-hold, yet no call is
> actually present. We can't reproduce this issue on demand, but we have
> noticed the following is true when it occurs:
>
> 1. The shared line often has high call volume and is shared by as many as
> 10 devices.
> 2. The phantom hold will often only affect a single device, resulting in
> the phone being out of sync with its peers.
> 3. No amount of line-button/soft-button/hard-button presses seems to clear
> the line of the phantom. Rebooting the phone will remove the phantom,
> though.
> 4. Calls can be made from the afflicted line
> 5. To date, this has occurred on SIP6945.9-4-1-3 and SCCP6945.9-3-3-2-SR1
> firmwares.
>
> We have found similar bug reports on the Cisco website, but they either
> apply to other phone series and/or were corrected by the 9.3.X code train.
>
> Has anyone else run into anything similar? Thanks!
>
> --
> Gabriel Jackson
> Network and Telecom Systems Engineer
> University Technology Services
> (248) 370-4560
>
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>
>
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