[Asterisk-Users] Is it possible to use IAXY device to make 56Kmodem calls

[Steven Critchfield]

On Thu, 2004-11-04 at 14:40 -0500, Jerry Geis wrote:
> steve,
> 
> Thanks, do you recall what config commands you gave the modem 
> to drop it down and only connect at lower speeds? I'm not a modem guru.

Thats all it was able to negotiate. Beware that most 56k modems are
winmodems and SUCK HUGELY when line conditions are poor. Even in the
true hardware modems there is a vast difference from vender to vender as
to whether or not they will operate at all on poor lines. 

Essentially my suggestion is that if you MUST have your modem, don't go
all VoIP.

> On Thu, 2004-11-04 at 13:50 -0500, Jerry Geis wrote:
> >/ ALL,
> />/ 
> />/ is it possible to plug a standard analog 56K modem into my
> />/ iaxy device and make a modem call out? 9600 baud call would
> />/ be fine actually. I just want to make a call out with my iAXy
> />/ device and eliminate my PSTN line.
> /
> Depends on network quality. Not reliably and not fast. On a clean cable
> modem with a channel bank and T1 card I could occasionally get 14.4
> connections but it would quickly drop to unusable as soon as either a
> frame was dropped or the jitter increased.
-- 
Steven Critchfield <critch at basesys.com>