[Asterisk-Users] How to use a data T-1?

[Steve Langstaff]

Remember to add the RTP, UDP and IP overheads.
 
And then just do the math.

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces at lists.digium.com]On Behalf Of William Piper
Sent: 19 June 2006 17:12
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [Asterisk-Users] How to use a data T-1?


Depends on the codec. If you are using ulaw, you will only be able to have about 23 calls. If you use g729 you can have as many as 187 simultanious calls on a data T1.
 
Remember, you have 1544Kbs of bandwidth. 
g279=8Kbs per call
uLaw=64Kbs per call
 
Just do the math.
 
bp

 
On 6/19/06, Warren < warren-lists at icruise.com> wrote: 

Steve,

I want to end up with a system that will let me send and receive voice
calls.  I guess what I want to do depends on the best way to do that. 
Can I do more than 23 (decent sounding) voice calls on a data T-1 with
someone else handling the final part of the call to the copper for me?
If so than that is my likely final destination.

I have a channelized voice T-1 currently plugged into my meridian 
system, but I would like (if realistically possible) to do as much of
this over IP as possible for maximum flexibility.  Is that a pipe dream
or just silly given the current state of technology?

I am lucky enough to work for a company that is letting me take my time 
with this, test the various options and come up with the proper
solution.  I am assuming (I know: dumb to assume) at this point that
VoIP over a T-1 to a provider that can then route it to hard phones for
me would be the way to go.  Similarly, I would point my 800 number to a 
DiD hosted by a VoIP provider that would then route the call back to
me.  If that is an incorrect assumption, please let me know.

Regards,
Warren

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