[VoIP] Bell 103 modem emulation in Asterisk?

[Ben Jackson]

Max:

This could be concievable. There is an application that does the opposite of what you want (outward dialling) called iWar, which is a war dialling application. It can use IAX2 trunks to dial out and connect. You may want to take a look at it.

--
Ben Jackson - bbj at innismir.net - http://www.innismir.net 
>From my Mobile Phone

-----Original Message-----
From: "ikjtel" <ikj1234i at yahoo.com>
To: "Voice Over IP Tandem for Analog Switches" <voip at ckts.info>
Sent: 6/30/07 11:22 AM
Subject: [VoIP] Bell 103 modem emulation in Asterisk?

In the very old days, UNIX "time sharing" systems
would have a bank of answer modems ("data sets" ;-)
that would be connected to the host system over serial
ports.  A process known as "getty" would be running in
the host that would look for incoming calls and would
arrange to run the login and shell processes and route
the serial line send/receive into stdin and stdout on
behalf of the remote user.

Later, when telnetd was introduced, users would
connect to the system using TCP/IP and "telnetd"
(later sshd) would perform a similar function to the
getty scheme even though there was no longer a
physical serial port involved.

I'm trying to find out if there is an asterisk app
that basically emulates a Bell 103 answer modem (in
DSP) so that, when dialled, it answers the call with
the traditional answer tone...  On the backend would
be some smoke & mirrors similar to telnetd and/or sshd
such that the caller would receive the standard Unix
login: prompt...  At the moment it doesn't need to
have V.92 or even Bell 202/212 codes in the DSP...

I found a few matches when searching on google such as
chan_modem, "spandsp", "t38modem", and "iaxmodem". 
The last one seems to be the closest but the
aforementioned appear to be for FAX use and not
generic voiceband-data modem stuff...

If anyone has any experience with this would like to
hear from you either on or off list...

Thx

Max


       
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