Xref: utzoo comp.sys.ibm.pc.misc:3029 comp.sys.ibm.pc.hardware:2559
Path: utzoo!attcan!uunet!munnari.oz.au!bruce!mlacus!pault
From: pault@mlacus.oz (Paul Taylor)
Newsgroups: comp.sys.ibm.pc.misc,comp.sys.ibm.pc.hardware
Subject: ISDN BRI cards for a PC
Keywords: ISDN,BRI
Message-ID: <662@mlacus.oz>
Date: 26 Oct 90 06:51:25 GMT
Organization: Aust Centre for UNISYS Software(ACUS Melb)
Lines: 29

I am looking for an ISDN Basic Rate Interface card for an AT PC.
The requirement that I am having trouble meeting is

 "an API (ie. software access) to a D-channel LAPD service"


This means that I should be able to write a C program on the PC
which builds and analyses ISDN layer 3 messages (eg. a Q.931 process, for
example) which sends layer 3 messages down to the datalink service on the
card for subsequent transmission in the I-field of an I-frame, and vice-versa
on receive.

The LAPD service must run transparently on the card.

Most cards offer a (non-standard) layer 3 interface to call control
functions. Anyone come accross a card that exposes its datalink SAP?
I don't want to buy a source license if possible.


Any ideas??


Thanks in advance,

Paul Taylor.
-- 

Paul Taylor (VK3BLY), Australian Centre for Unisys Software (ACUS).
pault@mlacus.oz