[cisco-voip] 9971 making phantom / ghost calls - 9.3.x firmwares

[Bernhard Albler]

Hi guys,
I think i know the problem you are facing. There has been a period where at
least part of the manufactured 9971 had a major Issue with the quality of
the Display/Touchscreen assembly which resulted in those ghost calls. The
newer firmwares of those phones introduced optimizations for the touch
screens to counter the problem but some phones might still experience the
issue.
In this case i think the only option is to RMA the phone or if it is a
large scale (many phones) issue to contact your cisco reps.

cheers
bernhard



On Tue, Nov 26, 2013 at 9:02 PM, Erick B. <erickbee at gmail.com> wrote:

> Is anyone familiar with this issue and knows how to stop the phantom calls
> without unplugging the phone?
>
> We had this issue on earlier 9.3 firmware versions and were provided 9.3.2
> ES12  which seemed to fix the phantom call issue (or speed dials being used
> with no one at the phone) but a few phones still had been doing the ghost
> calls on occassion,
>
> We upgraded to 9.3.4-24 firmware a month or so back (before 9.4.1-9 was
>  out) and that did not fix this issue with the phantom calls.
>
> The Call Manager CDRs show the 9971 phone is making the calls (MAC
> Address, IP address are the phone).
>
> Upgraded to 9.4.1-9 firmware and haven't seen the issue yet (to early to
> say) but 9.4.1-9 has very annoying dialing delay/prolonged beep issue that
> annoys the user that they can barely make calls on the phones without
> problem Seems to be CSCtb02271 from working with TAC on this.
>
>
> CUCM version 9.1.1.20000-5 (9.1.1a)
>
> Thanks, Erick
>
>
>
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>


-- 
Bernhard Albler, +4369917207384
--
"Was Nachwelt! Wie komm' ich dazu was für die Nachwelt zu tun? Was hat denn
die Nachwelt für mich getan?"
--Carl Friedrich Zelter
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