View Single Post
  #3 (permalink)  
Old 01-25-2011, 08:31 PM
Gareth Evans
Guest
 
Posts: n/a
Default Re: PSTN Noise on Atcom IP01: Asterisk PBX Appliance

> "Gareth Evans" <gareth82uk@hotmail.com> wrote in message
> news:4d3f276d$0$19975$c3e8da3$33a0879d@news.astraw eb.com...
>> Hi, I recently purchased an Atcom IP01 Appliance with an FXO port.
>>
>> When making a call out the FXO port I get the occasional, but repeating
>> sound blips (popping sounds). I don't think it's electrical interference,
>> as the appliance is faw away from the mains.
>>
>> I have a good line and have no issues at all with my BT handset.
>>
>> Here is a link to a sample recording:
>> http://www.simplygenius.co.uk/file/m...-Recording.mp3
>>
>> If anyone can help, it would be greatly appreciated.
>>
>> Thanks,
>>
>> Gareth

>
> Intriguing.
> How did you make this recording?
> Not all these events are the same, but there are several that look to me
> like on-hook/
> off-hook events lasting about 430ms which, assuming it's an outgoing call,
> is long
> enough to drop a BT line, unless of course something in parallel is
> keeping the line
> looped, like your monitoring device.
>
> --
> Graham.
>
> %Profound_observation%
>

Thank you for Graham. I installed a Blink (a SIP app) on my test PC, it has
built in call recording function.

I have connected up my Grandstream HandyTone 503 and calls are perfectly
clear with no "blips". I can only assume I need to configure some settings
on the IP-01 or maybe I have some faulty hardware (unlikely).

Unfortunately my Asterisk knowledge is not that advanced. Is there anything
else I should look at?

Thank you for your help.

Gareth



Reply With Quote
 

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45