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.
#11342 by chiplatham
Fri Jun 12, 2009 6:35 am
hello...i am a new ooma customer and tried searching, but got lost in a bunch of threads dealing with other issues.

when i am talking to someone, the person tells me my voice drops out...ie silent for a moment...like i am getting another call coming in...like from call waiting.

my hub is connected to the modem via the modem connection on the back on the hub and to the router via the home connection, as per the instructions.

speed test per http://www.whichvoip.com/voip/speed_test/ppspeed.html

jitter 0.6 ms
packet loss 0.0%
mos 4.1
download speed 2.82 mbps
upload speed 487 kpbs
qos 95%

any suggestion how i can get this corrected? it is happening every 15 seconds or so according to the person on the other end. thanks.
#11343 by niknak
Fri Jun 12, 2009 6:47 am
You are leaving out some of the test results:

jitter should be to and from you to the server
TCP delays to / from you
Round trip times to / from you
QOS Upload / Download

If your voice is cutting out it may be that you you have high TCP delays or poor QOS in the upload direction

Rerun the tests and print all the results
#11344 by chiplatham
Fri Jun 12, 2009 6:48 am
sorry...didn't see that tab.
is this what you mean?

VoIP test statistics
--------------------
Jitter: you --> server: 0.6 ms
Jitter: server --> you: 1.0 ms
Packet loss: you --> server: 0.0 %
Packet loss: server --> you: 0.0 %
Packet discards: 0.0 %
Packets out of order: 0.0 %
Estimated MOS score: 4.1

Speed test statistics
---------------------
Download speed: 2826008 bps
Upload speed: 487368 bps
Download quality of service: 95 %
Upload quality of service: 83 %
Download test type: socket
Upload test type: socket
Maximum TCP delay: 80 ms
Average download pause: 11 ms
Minimum round trip time to server: 75 ms
Average round trip time to server: 80 ms
Estimated download bandwidth: 29600000bps
Route concurrency: 10.474139
Download TCP forced idle: 78 %
Maximum route speed: 6990400bps
#11346 by niknak
Fri Jun 12, 2009 6:54 am
Yes, now we can see your upload QOS is 83% which is probably why your voice is cutting out

You may have to impliment QOS on your OOMA hub if you have not already done so.

QOS settings depend on how it is wired into you network
(Modem -->Hub-->Router or Mode-->Router-->Hub)

I have a very fast FIOS connection so I never had to set up anything with QOS. I am sure others here that will read your post can advise you on making these settings
#11362 by chiplatham
Fri Jun 12, 2009 11:50 am
My ooma is set up Modem --> Hub--> Router . i know how to adjust the qos setting...what should i adjust it to based on my test?

right now it is set to about 20% of my average upstream numbers.
#11364 by bw1
Fri Jun 12, 2009 12:06 pm
It should be at 80% of your upstream number. You could also try 100% and also try QOS upload set to 0. I've tried all three and haven't seen any significant difference myself. But setting it to 20% could be causing your problem.

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