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.
#71337 by asapReps
Tue Dec 21, 2010 5:08 pm
We have an issue that has been going on for many, many months. When on the cordless DECT 6 phone (connected to the hub), there will be a very short (half-second?) noise that can sound like a gunshot, a shriek, a door slamming, or a dog bark.

The noise can be heard at both ends, and it doesn't seem to be limited to any specific type of call; it has happened with inbound or outbound, local or long distant, "toll" or toll-free calls.

The noise has caused automated systems to act on it as if I spoke or pushed a key, and put me in a menu that I didn't want to be. So I KNOW the noise is detected at the non-Ooma end.

The noise is more of an annoyance than anything else, especially when an automated system at the other end interprets it as something that you have done. We have had people comment "what was that", and we just tell them, "oh, that's our phone service".

I have documented as many of the cases as I can and email them to "support", but I never hear anything from them.

We have been round and round with settings and have done speed tests. Internet download speeds are up in the range of 20-22Mbps and upload is 3-4 Mbps. But while on the phone, download is maybe 8-12 Mbps, and upload is 0.15-0.30 Mbps (yes, less than 1). Messing with QOS has not been productive, plus "support" has hinted that the problem is not related to that. But we have been using 384Kbps for upstream and 0 for downstream.

So the reason for this posting is to get an idea if ANYONE else out there has ever experienced this type of noise.
#71342 by lbmofo
Tue Dec 21, 2010 5:38 pm
Haven't heard that noise before; that's strange.

Looking at your QoS, downstream being 0 is okay but upstream should be adjusted way up.

If "Quality of Service" section has and entry "Reserved Bandwidth for Calls (Kbps):" set it to 215 instead of the default 130.

Also, are you using the built in modem port mac address?

viewtopic.php?t=9536#p66155
#71344 by asapReps
Tue Dec 21, 2010 6:20 pm
Increasing the Upstream Internet Speed has caused problems in the past. I was told quite a while back when I did actually speak with a level 3(?) tech person (for other issues) to leave it at 384. I am hesitant to change it.

Reserved Bandwidth for Calls has been set at the default of 130. I would think increasing to 215 would cause internet usage to get real slow, but I can try it.

The MODEM Port MAC Address is set to "Automatic".

Part of the problem with troubleshooting this, is that the noise is unpredicatable. So I should probably only make one change, and then use until the noise occurs again. There have been only three instances of the noise since Saturday and there have been 29 completed calls, although some were less than 20 sec.
#71345 by lbmofo
Tue Dec 21, 2010 6:25 pm
QoS setting destroying internet speed like that is not normal.

I would do a factory reset of the Hub and setup with "optimal setting." Set QoS and built in modem port and assess your situation. If anything, you can always revert to how you have it now.

southsound wrote:Hub factory reset sequence:

1) Remove the power for the Ooma device.
2) Hold down the Ooma tab [blue light] and connect the power. Hold for 30 seconds until all the lights start flashing.

Once the lights stop flashing, release the Ooma tab and the device will reset to factory settings.
#71416 by southsound
Wed Dec 22, 2010 8:49 pm
matthewn wrote:
asapReps wrote:So the reason for this posting is to get an idea if ANYONE else out there has ever experienced this type of noise.


Check this thread http://www.ooma.com/forums/viewtopic.php?f=4&t=8068

I could be mistaken but I think most people can tell the (be it ever subtle) difference between a gun shot and a touchtone.

It almost sounds like the OP must have gotten a system with the Foley option. I wish I had an answer but as lbmofo states, this seems to be a new one for the forum.

[Fom Wikipedia: Foley is the reproduction of everyday sounds for use in filmmaking. These reproduced sounds can be anything from the swishing of clothing and footsteps to squeaky doors and breaking glass. The best Foley art is so well integrated into a film that it goes unnoticed by the audience.It helps to create a sense of reality within a scene. Without these crucial background noises, movies feel unnaturally quiet and uncomfortable.] This should not be confused with a foley catheter which when removed makes us unnaturally noisy and very uncomfortable.
#71419 by matthewn
Thu Dec 23, 2010 8:31 am
asapReps wrote:The noise has caused automated systems to act on it as if I spoke or pushed a key, and put me in a menu that I didn't want to be. So I KNOW the noise is detected at the non-Ooma end.


southsound wrote:I could be mistaken but I think most people can tell the (be it ever subtle) difference between a gun shot and a touchtone.


OP says the "gunshot" sound sounds like a key press and is processed as such, sounds like classic DTMF talkoff.
#71422 by southsound
Thu Dec 23, 2010 9:29 am
matthewn wrote:
asapReps wrote:The noise has caused automated systems to act on it as if I spoke or pushed a key, and put me in a menu that I didn't want to be. So I KNOW the noise is detected at the non-Ooma end.

OP says the "gunshot" sound sounds like a key press and is processed as such, sounds like classic DTMF talkoff.

Thanks - I missed that when reading the first time. From the OP's comments, it may be a combination of DTMF talkoff on some calls and some kind of carrier induced noise on others. As I think about it, when I set the gain into the codecs on some of my digital recording gear too high, it makes a similar "gunshot" noise - unlike analog equipment that just returns a (sometimes desireable) overdriven sound. Maybe one of the carriers ooma is using has a gain problem.

Since the OP has already done some logs and not received a response from the normal support lines, I would suggest asapReps send a PM to ntoy and asking if he might check into it, based on those logs. Norm is a wonderful supporter of this forum and is always happy to "roll up his sleeves" to solve problems.
#71435 by asapReps
Thu Dec 23, 2010 3:22 pm
re: I would suggest asapReps send a PM to ntoy

done (just now)



re: "gunshot" sound sounds like a key press

The noise that we hear at the Ooma end is not a "touch tone" of any sort. It is really hard to describe, other than what I have already posted.



re: Check this thread viewtopic.php?f=4&t=8068

In my opinion, my issue is NOT related to that post. The fact that the noise gets processed by an automated system might be because that system handles voice responses as well as kepyad. Maybe it is interpreting the noise as a voice response. One recent occurrence was while the automated system was playing music. I was not saying or pressing anything.



Today, during an outbound call to a "local" exchange, the noise was heard EIGHT different times during the 30 minute call.

At the suggestion of a previous post, I changed the MODEM Port MAC Address from "Automatic" to "Use Built in" after that call today. I shut off the hub/scout, turned back on hub, but it kept blinking red for over 2 minutes, so I shut it off again and shut off the cable modem and router. Then powered the hub, and it initialized properly (blue light). Powered on the scout. Made a few calls (using DECT 6 phone from hub) to automated systems and heard the gunshot on the same number where I have heard it before. So that change was not the answer.


12/23/10 1036CT (during call after 3rd instance of the noise ) http://www.speedtest.net/result/1082321678.png
download: 10.36
upload 0.13
ping 41ms


12/23/10 1038CT (during call)
http://www.pingtest.net/result/30768060.png
mos: 4.3
packet loss 0%
ping 75ms
jitter 3ms


12/23/10 1110 (not on a call) after changing MODEM Port MAC Address to
"built in"
http://www.pingtest.net/result/30769873.png
mos: 4.36 "B"
packet loss 0%
ping 75ms
jitter 4ms


12/23/10 1113 (not on a call)
http://www.speedtest.net/result/1082366956.png
download: 23.07 Mbps
upload: 3.50 Mbps


12/23/10 1116 (during call to automated system)
http://www.pingtest.net/result/30770236.png
mos: 4.36 "B"
packet loss 0
ping 74
jitter 3


12/23/10 1117 (during call to automated system)
http://www.speedtest.net/result/1082372398.png
download: 7.63
upload 0.16
ping 57ms

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