11-08-2012 01:51 PM - edited 03-21-2019 06:34 AM
For three instances (that I know of) the outgoing voice quality was very choppy (digitized sounding). The incoming voice however was fine.
Topology: RV router - UC320w - SG300 switch - SPA502 phones
I've gone through all the literature and forum searches, so far not much head way.
Anyone have any thoughts?
Thanks in advance
I screwed up an accidently hit the "Correct Answer" button. The old hand-eye-brain coordination thingy.
My concern has not been answered yet.
Cheers,
Message was edited by: Michael Keevill
Solved! Go to Solution.
11-08-2012 02:29 PM
Hi Michael,
Please set the estimated uplink bandwidth to a rate that is equal to or less than the upstream bandwidth specified by your service provider. You may want to choose a setting that is one level below your provider's advertised limit.
If it doesn't help, please contact small business support team to open a case. They will take a close look at it.
Best regards,
Wendy
11-08-2012 02:29 PM
Hi Michael,
Please set the estimated uplink bandwidth to a rate that is equal to or less than the upstream bandwidth specified by your service provider. You may want to choose a setting that is one level below your provider's advertised limit.
If it doesn't help, please contact small business support team to open a case. They will take a close look at it.
Best regards,
Wendy
11-08-2012 02:58 PM
Hi Wenjin Yang,
PSTN connection is FXO so not much WAN traffic except for the usual cloud stuff (date / time and look for updates).
To answer your question: ISP Uplink Bandwidth 2.5M. I used 2M as the uc320 Est. Uplink Bandwith.
Thanks,
Mike
11-08-2012 02:29 PM
Hi,
What kind of PSTN access are you using? SIP trunk, FXO, BRI trunk?
Thanks,
Chris
11-08-2012 02:35 PM
Chris,
Three FXO lines.
Thanks,
Mike
11-09-2012 05:41 AM
Hi Mike,
Sorry, I assumed you used SIP trunk to service provider.
For FXO audio quality issue, in addition to FXO impedance matching tool and FXO gain tool at Configure -> Line (FXO) Ports in the Configure Utility to address the audio quality issue, the latest firmware 2.3.2(6) introduced 2 new tools: FXO/FXS Loopback (connect ports with RJ11 cable) test tool and FXO/FXO Loopback test tool. Please run these tools to see if it is successful.
Best regards,
Wendy
11-15-2012 09:39 AM
Hello Wenjin,
Regarding the FXO/FXO Loopback test tool results, please see below.
I do not know how to interpret the results. If you can shed some light, I would be much appreciative.
Thanks,
Mike
11-16-2012 09:00 AM
Hi Mike,
It seems that the test is passed. The failed value is highlighted in red color.
Best regards,
Wendy
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