On Sunday 01 October 2006 22:29, Jason Mumby wrote: > Hadley Rich wrote: > > A single FXO can only handle one call at a time since one FXO is plugged > > into one analog line. > > > > How many calls a box can take depends on the spec of the box and the PSTN > > interface hardware you choose. > > > > You can go with internal hardware like a TDM400P which can handle up to > > four lines (with 4 FXO modules). You can put multiple cards in some boxes > > (they generate 1000 interrupts per second so some boards can't handle > > more than one). There are also higher density boards such as the TDM2400P > > or the Sangoma A200. > > > > You could also go with external gateways which convert PSTN to SIP so you > > don't need any hardware in the actual box. > > > > If you are going to use anything above around 6 lines then you should > > definitely be looking into an ISDN service - which is a better service > > anyway due to the signalling being out of band. > > > > There is also the option of going with external SIP origination from a > > provider.
> So...ahem, at best one box can handle 4 calls at a time? That seems a > bit lean. I mean call centers must take hundreds of calls an hour. I > figure this probably isn't going to work on a large scale! Maybe I wasn't clear. The Digium TDM2400P or the Sangoma A200 can handle up to 24 analog lines in one box. If you _really_ wanted to and could find a box to put them in you could probably fit multiple cards into one box. That's at least 48 lines. Like I said above, there is no reason to have that many POTS lines, for that type of density you would go digital. There are 4 port PRI ISDN cards available with which you can terminate 4 E1 lines (4 * 30) so that's 120 lines. You _could_ put multiple cards into a single box too so that's 240 lines. Asterisk does work on a large scale. hads -- http://nicegear.co.nz New Zealand's VoIP Supplier
