[asterisk-users] Asterisk with iax2 over satellite

Dovid B asteriskusers at dovid.net
Sun Jul 15 13:45:25 CDT 2007


Tom,
The 2.5 second latency is probably what is causing it. I do not know how 
long it takes for the call to "stabilize" but I am sure that if it took 2.5 
seconds that I would of heard about it already. You have to look in to why 
in the initial 30 seconds the latency is at 2.5 seconds. I know that my 
client has 600-700 ms latency up and down from the satellite and then 
another 150 to us. Do you have jitter buffer enabled ? Also if you do steady 
pings what happens ? I would also to a tcpdump at the clients side and see 
what is going out.

Hope this helped.

Dovid

----- Original Message ----- 
From: "Tom Moore" <tmoore at issvsat.com>
To: "'Asterisk Users Mailing List - Non-Commercial Discussion'" 
<asterisk-users at lists.digium.com>
Sent: Sunday, July 15, 2007 7:37 PM
Subject: Re: [asterisk-users] Asterisk with iax2 over satellite


> Sip would probably work well in a single phone situation, but what I'm
> trying to do is use multiple phones over a single trunk connection.
>
> Using sip though do you have a few seconds at the beginning of each call
> where the audio is not clear?
> On our link when I tried a sip phone the connection was unstable for about 
> 5
> seconds before the two people could hear each other well enough to have a
> conversation.
> Also another things I noticed is that with either sip or Iax that when I
> call came in the latency shot through the roof up to 2.5 seconds or so for
> the first 30 seconds of the call before it settled back down to the usual
> 600 to 700.
>
> Tom
>
> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com
> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Dovid B
> Sent: Sunday, July 15, 2007 11:40 AM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: Re: [asterisk-users] Asterisk with iax2 over satellite
>
> I have a client that is using SIP over satellite with G729, VAD and Jitter
> buffer. The calls are coming in great.
>
> ----- Original Message ----- 
> From: "Tom Moore" <tmoore at issvsat.com>
> To: <asterisk-users at lists.digium.com>
> Cc: <jchomen at issvsat.com>
> Sent: Sunday, July 15, 2007 5:50 PM
> Subject: [asterisk-users] Asterisk with iax2 over satellite
>
>
>> Hi guys,
>> I'm in the process of setting up an Asterisk server over a satellite
>> connection to allow people on a remote island to place and receive calls
>> over the pstn.
>> What are the ideal settings I should use in iax.conf for the optimal
>> operation over satellite besides the normal options for the type=friend
>> peer?
>>
>> Does anyone have this working? I an place calls as things are now, but
>> there
>> is a lot of drop out in the audio.
>> I get a lot of receiving mini frame before full voice frame errors
>> especially the first 5 or 10 seconds of the call.
>>
>> Thanks,
>> Tom
>>
>> No virus found in this outgoing message.
>> Checked by AVG Free Edition.
>> Version: 7.5.476 / Virus Database: 269.10.2/894 - Release Date: 7/10/2007
>> 5:44 PM
>>
>>
>>
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>
>
>
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> No virus found in this incoming message.
> Checked by AVG Free Edition.
> Version: 7.5.476 / Virus Database: 269.10.2/894 - Release Date: 7/10/2007
> 5:44 PM
>
>
> No virus found in this outgoing message.
> Checked by AVG Free Edition.
> Version: 7.5.476 / Virus Database: 269.10.2/894 - Release Date: 7/10/2007
> 5:44 PM
>
>
>
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