asterisk users - Aug 2011 - Dragging the dialup customers along, possible?

We have an Ascend Max router that has a PRI plugged into it, providing 
our current dialup users with web access. The PRI is no longer cost 
effective, so I've been tasked with converting it to something cheaper.

We added a DID to our (existing) asterisk system (we have a couple dozen 
voip customers). We added an Adtran 908 to convert the VoIP signal into 
a virtual PRI for our MAX router to handle dialup calls.

When dialing into the number with a modem, MAX sees the call, picks up 
and apparently tries to negotiate it, but eventually disconnects. It 
HAS, however, twice, successfully connected the call for a short time, 
but no browsing was possible. I've done some debugging output on the 
Adtran which seems to indicate that an RTP BYE command is received: 
TM.T01 01 SipTM_Connected      rcvd SIP call-leg request: BYE ... This 
is the first difference between a debug output where the call connected 
and one that does not work. This is the one that doesn't work.

TL;DR - Is it possible to do dial-up through Asterisk? Or is it like t38 
faxing that is 'possible' to get working, but not if you have other job 
responsibilities?

Thanks!

-- 
Aaron Krohn
Web Force Systems

Business Office:
131 Dillmont Drive, Suite 201
Columbus, OH 43235
Direct:  614-384-0019    Fax:  614-785-0871
Tech Support / Help Desk Direct:  614-384-0020

[This email is either empty or too large to be displayed at this time]

It is possible to use Asterisk as a dialup PPP server, but only if you are doing
PRI between the telco and Asterisk (see core show application DAHDIRAS).

You could bring analog POTS lines into a dialup server (Portmaster maybe?) if
PRI is too expensive. Can outsource your dialup customers to a national network?
You could simply stop providing dialup service.

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces
at lists.digium.com] On Behalf Of C F
Sent: Monday, August 29, 2011 4:18 PM
To: tech at ewebforce.net; Asterisk Users Mailing List - Non-Commercial
Discussion
Subject: Re: [asterisk-users] Dragging the dialup customers along, possible?

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of C F
Sent: Monday, August 29, 2011 3:18 PM
To: tech at ewebforce.net; Asterisk Users Mailing List - Non-Commercial
Discussion
Subject: Re: [asterisk-users] Dragging the dialup customers along, possible?