Advanced Settings Tweaks
ForumName2:
Callers are having difficulty hearing me although I hear them fine. Are there any adjustments I can make in advanced settings that would boost the upload quality or speed so they can understand what I'm saying?
I am using Google voice with a 202 and have plenty of bandwidth on speed tests.
SteveInWA:
Quote from: ForumName2 on April 04, 2020, 02:46:24 pm
Callers are having difficulty hearing me although I hear them fine. Are there any adjustments I can make in advanced settings that would boost the upload quality or speed so they can understand what I'm saying?
I am using Google voice with a 202 and have plenty of bandwidth on speed tests.
Do you mean that they are hearing you (audio is indeed reaching their end), but the volume is too low, or do you mean that your voice is not reaching their end (no sound)?
If you mean the former, and you have not messed with the default settings already, then it's caused by a poor quality telephone plugged into the OBi.
You will need a helper, with a phone number you can call, who can be your "audio meter'.
You can increase the volume received by the OBi from your telephone's microphone. You need to use the OBiTALK web portal, click on your device, then get into expert configuration mode. Go to Physical Interfaces-->PHONE1, and find the ChannelRxGain parameter. Uncheck BOTH boxes to the right of its value. Write down the default value, so you can return to it, if you get too far off. Increase the number, a few dB at a time, until your called party can hear your voice with no distortion -- if it distorts, lower the dB number. Note that the default value is a negative number, so, if it starts at -4, then change it to -2, for example, and see if that helps. If not, change it to 0, then 2, then 4, etc. You must scroll down to the bottom of the page and click Submit to make the change, and wait a few minutes for your device to reboot.
Note that we are adjusting the receive gain. That may sound backwards, but it means, the level of amplification that the OBi adds to the sound it is receiving from your telephone's microphone.
ForumName2:
Thank you for the fast and detailed response but now realize that I was not clear in my question.
The caller is often unable to understand what I say because the sound is garbled or clipping (even though on my end everything is fine and can hear everything they say). I have tested on both ports and with different phones with the same unacceptable results.
The instructions you gave for gain control may come in handy but I need to fix the other problem first.
SteveInWA:
OK; yes, that is a different problem.
It is usually caused by a poor quality or overloaded uplink internet connection (the data you are sending via your ISP). You need a high-quality broadband service, and you should not be running high data-using other things on your LAN, such as online gaming or video conferencing.
Note that cable ISPs often have this problem, when there is physical damage to the coax cable between their hub and your residence. Examples are corroded connectors, water incursion, rodent damage, etc. Using basic ISP speed tests is meaningless, since this problem is caused by the overall quality of the upload side of the connection, not the download speed, and the basic tests do not measure what actually impacts VoIP: jitter, dropouts and latency. DSL service is even more prone to poor-quality physical connections or interference on the wires.
The only test that truly simulates an actual VoIP call is the one provided by Visualware -- their BCS test. You must consistently score a 4.0 or higher on that test.
http://www.visualware.com/bcs/
ForumName2:
Bingo!
I think you are absolutely correct, but I was hoping for a different answer that I could fix on my side. I even upgraded my cable service to 250 down and 30 upload, but the quality must not be there. There are only two of us and we don't do any gaming. Can you think of a workaround until fiber is installed or they upgrade the node in my neighborhood?
Interestingly, the phone line provided by the cable company (out of the RJ 11 port on the back of their modem) seems to work fine. Why is their Voip line good when my Visualware aassessment reports are typically in the 1 to 2 MOS range? I was hoping I could change the advanced settings to mimic whatever they are doing.
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