[Asterisk-Dev] Business Case for a DS3 Channel/Driver in Asterisk VoIP

[James H. Thompson]

Mike Machado <mike at homelandtel.com> wrote:
>> Because the phone companies still run the phone network.  For sending
>> 600+ calls over a circuit to a customer, they use DS-3s.  Ipso
>> facto, if you want 672 channels from the phone company in your
>> Asterisk box, you need a DS-3 interface.  Otherwise, you must either
>> split the DS-3 up into DS-1s or provision more DS-1s.  The monthly
>> local loop charges (the cost for the ILEC to give you copper from
>> the MDF to the demarc) alone for 28 PRI DS-1s is probably more than
>> all the (home) phone bills you've ever paid in your life combined,
>> assuming you've been paying a phone bill for 20 years or less.
>
>
> How practical is this though? I had a 2.4Ghz P4 server with 1GB RAM
> and a TE410P and I could not even run 4 PRIs at full capacity. I
> think I made it to about 3 before D channels started bouncing. Not
> sure of the overhead difference of CAS vs CCS.
>

From:
http://www.voip-info.org/wiki-Asterisk+dimensioning

Today, we were able to reach an astonishing 790 simultaneous audio playbacks. (sip to asterisk, any
codec.) on a 350$ pc. Tests were done on we a pIV on 2.4ghz with 512mb ram. Unless you dont do cpu
hungry tasks such as


Jim

James H. Thompson
jht at lj.net