[cisco-voip] issue with 8851 handset

[Anthony Holloway]

Do you have anymore details? I'm in the middle of a nasty one right now,
and we haven't identified the root cause yet. My own personal phone is an
8861 on 12x firmware, and I never have an issue.

On Feb 27, 2018 4:16 PM, "Brian Meade" <bmeade90 at vt.edu> wrote:

> This one is nasty.  Been hitting a bunch of people.
>
> On Tue, Feb 27, 2018 at 2:51 PM, Anthony Holloway <
> avholloway+cisco-voip at gmail.com> wrote:
>
>> Have you seen the defect on the Opus codec and 8800 series phones?
>>
>> OPUS codec on 78XX/88XX causing audio quality problems
>> <https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvc76073>
>>
>> On Tue, Feb 27, 2018 at 9:48 AM Terry Oakley <Terry.Oakley at rdc.ab.ca>
>> wrote:
>>
>>> This appears to be a SIP issue but I will ask you much more brilliant
>>> people than I to see where I should or should not be looking.   We are
>>> slowly migrating from a mostly 7941 7942 SCCP deployment to almost
>>> exclusively 8851 SIP based handsets.   We rarely saw any call issues but
>>> now with the 8851 handsets in place we have a few users who are
>>> experiencing dropped calls (so far only internal calls have been reported
>>> as dropped).    The other person in the call path is almost always getting
>>> the Perservation mode message on their device.   This is so far been
>>> reported as affecting a few users primarily and consistently.   Even to the
>>> point where one of them the phone is restarting on a regular basis even
>>> when not on a call.   We have replaced devices, moved users to new network
>>> ports and still the issue continues.   Any advice that you have that would
>>> assist me in troubleshooting this I would greatly appreciate.   I have used
>>> RTMT to ‘look’ at different parameters but am a little green on where or
>>> what I should be looking for.
>>>
>>>
>>>
>>> Graciously thanking you in advance
>>>
>>>
>>>
>>> Terry
>>>
>>>
>>>
>>> *Terry Oakley*
>>>
>>> Telecommunications Coordinator *| *Information Technology Services
>>>
>>> *Red Deer College **|*100 College Blvd
>>> <https://maps.google.com/?q=100+College+Blvd&entry=gmail&source=g>. *|* Box
>>> 5005 *| *Red Deer *|* Alberta *| *T4N 5H5
>>>
>>> work (403) 342-*3521   **| * FAX (403) 343-4034
>>>
>>>
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>>>
>>
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>>
>
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