[Asterisk-Users] concurrent calls

[Martin Pycko]

basically the trunking header is 10 bytes long
the IAX header is 4 bytes log
IP is 20 bytes
UDP is 8
GSM is 33 bytes long (20 ms data)

So assuming that you send a packet every 20 ms (50 times a second) it goes
like this:

((20+8+10) + x * (4 + 33))*50*8 = all_bandwidth [kbps]

where x is the number of calls. (*8) because you come from bytes to bits.
That doesn't include the transmission layer, only IP/UDP/IAX2/GSM

regards
Martin



On Thu, 9 Oct 2003, duncan wrote:

>
> > > So whats the best way to find the maximum number of concurrent calls in
> > > this setup:
> > >
> > > IAX2 Trunk using GSM over a 512k internet line.
>
> >show channels?
>
> actually i meant how to find out how many i could push down the 512k line -
> with regards to codec bandwidth and signalling etc...
>
>
>
>
> duncan
>
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