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.
#2934 by von
Thu Feb 12, 2009 6:42 pm
Can someone help me do something about my VERY VERY POOR call quality?

My setup is:
ISP Modem --> Router --> ooma

I tried:
ISP Modem --> Ooma --> Router --> Computer

But I dont like that the Ooma hub seems to slow down my connection to the internet.

My calls are horrible, any questions, or suggestions anyone?
#2971 by midwayfive
Fri Feb 13, 2009 1:40 pm
Similar issues - I have used Vonage since 2004 so have a decent understanding of VOIP and really had no major issues and only occasional phone quality issues with an integrated linksys/vonage wireless router. In trying Ooma I would say it is 50/50 no matter the time of day that I will have issues of the party not hearing our voice, echos, delays, charlie brown garble of wa-wa-wah-wa-wah, etc.....

I have our system set up this way - with the Ooma QoS set at 2330 for uploads and you would think would be more than enough from the default 384 kbps.

ISP Modem --> Ooma --> Router --> Computer

Results from
(Copied on 2009-02-13 15:24:50)
Download: 5974 Kbit/s
Upload : 4071 kbit/s
Connects : 1569 conn/min
Ping: 37 ms

Just basic internet surfing, emails, music/video streaming and even when not running anything major - would still run into QoS issues.....have tested stream at different times of the day.....on and off the phone and would see uploads in the 4-5K range and if talking on the phone, see the uploads drop to appx 2K which seems to make sense with the hub allocating the 2330 towards QoS.

Am I doing something wrong? How can I improve my service so my family doesn't complain about the "technology"
#2973 by navarre
Fri Feb 13, 2009 4:20 pm
That is a lot of bandwidth to still have issues.

Just a few more questions:

- What is the vendor and model of your router
- What is the software/firmware of your router
- Who is your ISP
- What is the ISP technology (DSL/cable)

FYI, here is my result from


Even having an asymmetric connection and low upstream, I have no issues.

#2989 by von
Sat Feb 14, 2009 3:49 am
navarre wrote:Can you please share with the forum the following information:

- Router Make/Model
- Router Firmware Version

Also, please post the results of a computer on your network to:

This will go a long way to assisting with your current set-up.


Apple AirPort Extreme
version 7.3.2

ISP Comcast

Results from
(Copied on 2009-02-14 06:45:36)
Download: 28702 Kbit/s
Upload : 4271 kbit/s
Connects : 2034 conn/min
Ping: 27 ms
#2999 by midwayfive
Sat Feb 14, 2009 8:57 am
- What is the vendor and model of your router
- What is the software/firmware of your router
- Who is your ISP
- What is the ISP technology (DSL/cable)

Answers to your questions:

-Linksys - Model # WRTP54G
-Firmware Version: 5.01.04 (linksys/cisco software)
-ISP - Comcast - Cable Internet

Speed test from this morning - similar as before

Results from
(Copied on 2009-02-14 10:56:03)
Download: 5664 Kbit/s
Upload : 3847 kbit/s
Connects : 1473 conn/min
Ping: 35 ms
#3004 by navarre
Sat Feb 14, 2009 9:35 am
I see the common thread on both of your connections being the ISP, Comcast.

Both of the connectivity results are very good, which one last item is DNS.

I do not have any detail on Comcast--however I do know that OpenDNS (, responds very quickly and sometimes provides better response than an ISP's servers.

midwayfive: a few points

- If you are not using the POTS/voice ports on the router for phone, you may want to ditch it for a more "generic" router that does not have some QoS and other things built-in

- Try for a solid Linksys/Netgear/Belkin from either Best Buy or Amazon that is just for wireless and networking (if you use a desktop, look for gigE ports)

von: just a few

- Do you have a 2.4 GHz phone, wireless?
- Have you checked to see if the wireless channel on the airport is fixed at 1, 6, or 11 (channel)
- My thought is that you may be experiencing some of the "chop" from the phone and not the content from the ooma Hub to their CORE

I checked the 'notify me when a reply is posted', so check back in and see if this 'Comcast' commonality may have some merit--specifically on the DNS--although once a call goes through set-up, it is unlikely that there would be other problems.

#3014 by navarre
Sat Feb 14, 2009 5:57 pm
Just as a simple approach, I always recommend a NAT gateway directly to the CPE (modem or Ethernet demarcation). This gets the ooma Hub as just another device that gets a DHCP address and then asks the NAT/PAT translations to do all of the resulting work.

OpenDNS takes the DNS resolutions away from your ISP and places them on common ground. This way you will always get a "neutral" response on the DNS query instead of one catering to your ISP--and yes Virginia, DNS is manipulated for better network control.

While overall this does not affect your communications path, remember DNS (both CNAME and in.addr-arpa lookups) are always the most important part of going to http://www.somecrappyuselessdomainfullo ...


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