[asterisk-users] Meetme on short network

2012-11-25 Thread Jerry Geis
I am running asterisk 1.4.43 on a really small network for testing, all 
on same switch.

I launch a meetme between my server and 5 asterisk clients that
are all on 10 foot network cables all connected to the same switch.
The meetme is fine everything is in sync
Then I reboot one of the clients. When it reboots I automatcially
bring it back into the conference. however now its not really
"in sync".

I'm trying to understand why that might be??? I thought it would.
The conference is a listen only conference. Its not "off" or out of sync
by much - but it is noticable.

Is there anything I can do to make that audio more in sync all the time?
Thanks,

Jerry

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Re: [asterisk-users] Meetme on short network

2012-11-26 Thread Joshua Colp

Jerry Geis wrote:

I am running asterisk 1.4.43 on a really small network for testing, all
on same switch.
I launch a meetme between my server and 5 asterisk clients that
are all on 10 foot network cables all connected to the same switch.
The meetme is fine everything is in sync
Then I reboot one of the clients. When it reboots I automatcially
bring it back into the conference. however now its not really
"in sync".


By not "in sync" do you mean that there is a delay between when the 
speaker speaks and when the client hears it?



I'm trying to understand why that might be??? I thought it would.
The conference is a listen only conference. Its not "off" or out of sync
by much - but it is noticable.


There's always going to be some amount of delay. It takes time to encode 
the audio, send it, mix it (in this case), receive it, decode it, and 
have it pass through a jitterbuffer (which by definition of being a 
buffer introduces delay).


How much of a delay are you hearing?

Cheers,

--
Joshua Colp
Digium, Inc. | Senior Software Developer
445 Jan Davis Drive NW - Huntsville, AL 35806 - USA
Check us out at:  www.digium.com  & www.asterisk.org

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Re: [asterisk-users] Meetme on short network

2012-11-26 Thread Jerry Geis



By not "in sync" do you mean that there is a delay between when the
speaker speaks and when the client hears it?


There's always going to be some amount of delay. It takes time to encode
the audio, send it, mix it (in this case), receive it, decode it, and
have it pass through a jitterbuffer (which by definition of being a
buffer introduces delay).

How much of a delay are you hearing?

Josh,

I am using a "source" file so its not speak live voice. when I say "not 
in sync" I don't care
about a delay per say - its that 4 out of 5 of the clients are saying 
the same thing at the same

time and the one I rebooted is just slightly "off" not identical to 1-4.
So I have 5 clients where the hardware is identical, on  the same 
switch, same length network cable, etc... I reboot one unit so even 
though it goes away and then rejoins the MeetMe - I would think that the 
server is still sending out audio at the same time as the  other 1-4 
units and would take the exact same amount of time to decode and all 
that and should be "in sync" with clients 1-4.


again - dont care about delay - was just expecting the 1-5 units to all 
be in sync.


Thanks

Jerry
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