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

[Nick Bachmann]

Mike Machado 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.
>  
>

While Alex is right, kernel tweaking will help a lot, if you look in 
other threads, you'll see we've been talking about DS-3s in the context 
of being handled on bigger-iron systems than a 1-way P4.

Nick