[cisco-voip] Spartralink wireless phone one way audio.

[Sreekanth]

Hamu,

1. Do users hear the gargling and experience one way audio for any kind of
call? (internally between veritical/spartralink phones and calls made to
PSTN destinations)

2. To isolate where the cause of the issue is, you could do packet captures
at the AP and recreate the issue.

3. Analyze the packet captures and check if the RTP stream statistics like
delay, jitter, skew are at acceptable levels. If the statistics of the RTP
stream going to the phone are good, but the phone is hearing gargling, that
means the AP should be working fine and you will need to investigate the
phone. If the statistics of the RTP stream going toward the phone are bad,
you will need to investigate the AP and the upstream network to see where
the RTP packets are not being switched properly.

4. You can also check to see if when in a call, the spartalink phones
provide statistics like Rx packets. If the Rx packets are increasing, that
means the packets are making it to the phone, and the user should be
hearing the other side.

5. Checking the frequency of the problem will also help understand where
the cause might lie.


On 9 May 2017 at 17:46, Hamu Ebiso <hebiso2010 at hotmail.com> wrote:

> Hi Everyone,
>
> I work for the retails base company that utilizes spatralink wireless
> phones and Vertical phone system for the stores. I started with this
> company 3 weeks ago as a Voice System Engineer and I don't know anything
> about spartralink phones and Vertical phone system. I am all about cisco
> system. Some stores are moving to cisco systems but all lot of stores use
> vertical phone system because it's easy to trouble shoot and can be
> installed locally at the stores. Everything else is cisco, from switches to
> routers to ASA, and Unified communications.
> Enough with the background and let me back to my points.
>
> For over a year or so, most stores were having one way audio with
> spartralink phones. It doesn't matter if you are roaming between AP's or
> standing one place, you will have one-way audio and gargling voice at some
> point. Many people from vertical, cisco and spartralink were involved with
> troubleshooting but never able to resolve the issue since one-way audio is
> static and people at the stores were lazy and not following up or
> responding to asked questions with argent and they only react to when issue
> get worst.
>
> Now i am tasked to spearhead the team and bring everyone together to
> resolve this issue for once and all.
>
> I am just wondering if anybody had any interaction with these systems and
> can suggest anything that might help in resolving this issue.
>
> Thanks
> Hamu Ebiso
>
>
>
> Sent from my Sprint Samsung Galaxy S® 6.
>
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>
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