[cisco-voip] issue with 8851 handset

[Anthony Holloway]

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. *|* Box 5005 *| *Red Deer *|* Alberta
> *| *T4N 5H5
>
> work (403) 342-*3521   **| * FAX (403) 343-4034
>
>
> _______________________________________________
> cisco-voip mailing list
> cisco-voip at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-voip
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://puck.nether.net/pipermail/cisco-voip/attachments/20180227/d7b8ee2e/attachment.html>