This forum includes tips for maintaining the best audio quality possible with the Ooma System. If your Ooma system is having issues with dropped calls, static audio or echo, look here for assistance.
#69231 by lbmofo
Wed Nov 17, 2010 1:48 pm
Last edited by lbmofo on Sat Apr 06, 2013 11:26 am, edited 11 times in total.
#74551 by highq
Sun Feb 06, 2011 11:33 am
Disconnect everything from your Ooma. Disconnect your computer from the outside.
Run an ethernet nconnection from the Home port on the Telo to the computer, and reboot the latter.
#79079 by jdthird
Mon Apr 11, 2011 6:15 pm
Also, do a VoIP quality test: http://www.whichvoip.com/voip/speed_test/ppspeed.html

Note: check the "Advanced" tab

>All were green, no packet loss, jitter 0.6ms, MOS 4.1, download 6.88Mbps, upload 730k.
>QOS is 82%.



If you have a cable modem, check some readings:

[quote="murphy"]Connect to the status web page in your cable modem
http://192.168.100.1

>downstream -1
>SNR 38
>upstream power 36

If your internet seems to be okay, make sure to setup your Ooma using Optimum Installation Settings:
viewtopic.php?t=9536#p66155

>Had already done this, set it 15% less than my average upstream.

No matter where your Ooma is placed, if setup.ooma.com "Quality of Service" section has and entry "Reserved Bandwidth for Calls (Kbps):" set it to 215 instead of the default 130.

>This was at the default, changed to 215

Still no joy, but thanks. Never bothered checking the cable modem status page like that, have to remember that. :)
#98376 by JumpingJackFlash
Mon Jul 30, 2012 2:25 am
I'm getting all green on the tests, but "jitter: you-> to server is 6.7ms compared to jitter:server->to you which is 0.6ms

I rarely had quality issues with Vonage.

Should I sub out the cable modem?
#98422 by vandergraff
Mon Jul 30, 2012 10:43 pm
This is a new set up with Comcast 12 Mbps / 2 Mbps internet.

There is a crackle on the line during calls - doesn't sound like a network issue - more like the old crackle on old analog phones with a bad line.

It is there even with a single phone directly plugged directly into the phone outlet on the helo.

I run the suggest network check - see attached.

Any ideas

EDIT - more detail on the test results

Upstream jitter 1.3 ms
Downstream jitter 0.8 ms
Upstream packet loss 0.0 %
Downstream packet loss 0.0 %
Upstream packet order 100.0 %
Downstream packet order 100.0 %
Packet discards 0.0 %
MOS 4.1
REGISTER ms 857 ms
INVITE ms 646 ms
BYE ms 9 ms
Test VoIP and Speed Test
Attachments
advanced summary.jpg
advanced summary.jpg (40.9 KiB) Viewed 50506 times
ooma connection summary.jpg
ooma connection summary.jpg (37.67 KiB) Viewed 50508 times
#98424 by lbmofo
Mon Jul 30, 2012 11:21 pm
vandergraff, your numbers look very good. Did you always use the phone you are using? Have you tried a wired phone directly plugged into the Telo to elimate your phone being the problem?

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