[Asterisk-Users] Modems behind Asterisk - how?
andrew at rwts.com.au
Tue Jun 29 08:11:15 MST 2004
Looks like your message got lost in the thread.
On 29/06/2004, at 8:47 AM, John Vogel wrote:
> 1. Use 4 Sipuras (approx. $400). Only problem is, I can't get this to
> work! Sipura says use the G711 codec but it's not working for me.
> Anybody have this working?
I haven't got any Sipura's to test, but I tried and failed with
Grandstream 286's. My general experience (and advice I have been given)
is that transferring modem data across a network is a bad thing - any
jumps in the call, and any lag at all will cause the whole thing to
fail. It's generally OK for fax, but remember that fax works at a
significantly lower speed to modem transfer.
> 2. Use 8 FXS ports (approx. $700). Haven't tried this yet but it is
> more expensive.
I have managed to get a single FXO to FXS working for a dialup modem,
although I was only getting 24000bps. I am told (although I haven't had
the opportunity to try yet) that when I connect to a digital ISDN line
for the incoming calls, I will get better throughput (closer to 56k).
That said, this is probably your best option.
-------------- next part --------------
A non-text attachment was scrubbed...
Size: 2365 bytes
Desc: not available
Url : http://lists.digium.com/pipermail/asterisk-users/attachments/20040629/68c646e4/smime.bin
More information about the asterisk-users