06-25-2012 07:20 AM - edited 03-21-2019 05:57 AM
I have a UC320W that gets garbled calls on the incoming mostly but outgoing ocasionally. I have run the impedance matching and as well as adujsted the gain on the lines (due to low volume). I have also had the telco test the lines. I have not been able to fix the problem. I am out of ideas.
thank you in advance.
06-25-2012 07:54 AM
Hi,
Make sure when adjusting the gain settings on the FXO, that the volume level on the SPA phone is set to the mid volume level. We have seen problems were people have set the volume level to maximum on the SPA phone to compensate for low volume from the telco and this introduced distortion in the audio.
Please open a case with the Cisco Small Business Support Center. There are some advanced tools that they can run to analyze the audio and do some fine tuning. It is best if you are on the customer site when you call.
Regards,
Chris
06-25-2012 08:02 AM
The only issue is that the grabled calls are random.
06-25-2012 08:10 AM
Hi,
Can you be a little more specific in what garbled means to you?
A couple of thoughts on this:
Chris
06-25-2012 08:31 AM
Yes the phones are on the voice vLAN. I have tested the phone lines from the demarc and I do not hear any problems. I do know that it does happen from SPA to SPA but not as often as the outside lines. I will try the volume suggestion and let you know if it helps.
06-25-2012 10:03 AM
here is what I have found out
Can you be a little more specific in what garbled means to you?
06-25-2012 03:02 PM
Hi,
If you are having this bad audio on SPA phone to SPA phone we need to get a case open with the Cisco Small Business Support Center. They can enable some tools to capture Wiresharks and audio captures so we can see what is happening with your audio.
Let us know what you find in adjusting the SPA phone volume. (keep in mind there are several independent volume levels (handset, speaker, and headset)).
Chris
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