[asterisk-users] Asterisk and Hardware Requirements

[Jared Smith]

On 7/11/07, Josh <mylist13 at gmail.com> wrote:
> The idea is:
> The end user in country B will have 2 phone numbers : CdPNB and sCdPNB

Wow... sounds like a fun setup!  Your question is probably a little
in-depth for the mailing list (as it depends on a lot of variables),
but let's see what we can do to at least get you pointed in the right
direction.

>
> First Scenario
> --------------
> GWA's requirements would be:
> - 1 E1 port receiving the calls through PSTNA
> - 1 E1 port connected to KPN to re-route the calls
> - Asterisk? being able to map ~5000 CdPNB to sCdPNB
> - Handling up to ~50 simultaneous calls
> - Using G711, G.723.1 & G.729.a codec
> - H323 and SIP compliant

OK, first of all you'd need 2 E1 ports in GWA -- something like the
Digium TE220P card if you've got a PCI Express slot, or the TE210P if
you've got a 3.3v PCI slot, or the TE205P if you've got a 5v PCI slot.
 You'd also need a TC400B card in the box to be able to G.723.1 (and
handle G.729A more efficiently).

> GWB's requirements would be:
> - 1 E1 port receiving the calls routed through KPN from GWA
> - 5 E1 port connected to PSTNB
> - Handling up to ~150 simultaneous calls
> - Using G711, G.723.1 & G.729.a codec
> - H323 and SIP compliant
> - Asterisk managing the whole thing

This would be very similar to the configuration for GWA, except that
you'd need 6 E1 ports (which you could get with a combination of a
2-port and 4-port E1 card).  You'd also want to make this a much
beefier box, as handling 150 simultaneous calls might bring a weak
server to its knees.

> Second Scenario
> ---------------
> GWA's requirements would be:
> - 5 E1 port receiving the calls through PSTNA
> - 10 E1 port connected to KPN to re-route the calls
> - Asterisk? being able to map ~50000 CdPNB to sCdPNB
> - Handling up to 500 simultaneous calls
> - Using G711, G.723.1 & G.729.a codec
> - H323 and SIP compliant

Doing 500 simultaneous calls on a single Asterisk server is probably
not the wisest thing to do.  I'd suggest you spread the load across
several Asterisk boxes (maybe across 4 boxes, each with a 4-port E1
card such as the Digium TE420P).

>
> GWB's requirements would be:
> - 10 E1 port receiving the calls routed through KPN from GWA
> - 50 E1 port connected to PSTNB
> - Handling up to ~1500 simultaneous calls
> - Using G711, G.723.1 & G.729.a codec
> - H323 and SIP compliant
> - Asterisk managing the whole thing

Again, connecting 60 E1s and handling 1500 simultaneous calls on a
single Asterisk box is a recipe for disaster.  You'll need to spread
the load across many servers to be able to handle that kind of
traffic.

-Jared