Re: Dial Up Solutions

[Aaron Hopkins <lists () die net>]

On Sun, 18 Oct 2015, Clayton Zekelman wrote:

> I didn't think Asterisk had modem DSP and RAS code?!  Huh?

I was surprised to find IAXmodem (http://iaxmodem.sourceforge.net/), which
is "a software modem written in C that uses an IAX channel (commonly
provided by an Asterisk PBX system) instead of a traditional phone line and
uses a DSP library instead of DSP hardware chipsets."

It appears to be limited to 14.4k due to patent issues and handles faxes
only, but its existence suggests writing a software-only data modem should
be possible.

                                    -- Aaron

> At 09:31 PM 17/10/2015, Dovid Bender wrote:
> > You can use Asterisk. All you need a digium/sangom T1/E1 card and a box.
> >
> >
> > ------Original Message------
> > From: Will Duquette
> > Sender: NANOG
> > To: nanog () nanog org
> > ReplyTo: willd () staff gwi net
> > Subject: Dial Up Solutions
> > Sent: Oct 16, 2015 15:28
> >
> > Does anyone have any suggestions on equipment for our ISP that is still
> > supporting dial up customers?
> >
> > At the moment we are running 3Com Total Control 1000's but are running out
> > of spare parts as we have failures.  Given that this gear is so old trying
> > to source spare parts is proving to be difficult.
> >
> > We do have access to an Cisco AS5200 but are looking for maybe a SIP based
> > solution that could possibly run on our VM farm?  Has anyone heard of
> > anything like that or does it even exist?
> >
> > What kind of gear are you running if you still are supporting dial up
> > customers?