Local: Linux  ISDN
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Linux: ISDN4LINUX - Dial-In

Terminal & PPP



Version: 0.06 from 2004-08-28
Copyright 2000-2003 by Peter Bieringer <pb@bieringer.de>, original site of publishing: http://www.bieringer.de/linux/ISDN/
Unlimited non-commercial distribution of this document in its entirety is encouraged - please contact the author prior to commercial publication.


Suggestions, comments and improvements are welcome!

Contents

Some hints how to dial-in to in a ISDN4LINUX running server in some special cases, e.g. bring GSM and ISDN4LINUX to work (there are some hints on the Usenet and Internet, but none of them satisfied me completly...)

Changes to

Nokia 9110 (GSM)

Basic information: tests are done via German cellular networks D1 and D2.
Also the Nokia Cardphone is working with this setup, even in HSCD (bundling of more than one timeslot) - reported to me.

Global settings

on Nokia 9110


Terminal access

A working terminal access is the first step to a PPP connection.
The main reason (in a standard setup), why it's not working is the ignore of the incoming call, like following example shows:

Elsa Quickstep 1000 / Microlink (ISA/PCI)  ISDN card

AVM B1 ISA ISDN card

Linux server side

Linux client side for testing

Nokia Communicator client side

A successful log looks like this:

Elsa Quickstep 1000 / Microlink (ISA/PCI)  ISDN card

AVM B1 ISA ISDN card


Summary


AT commands
ISDN card
Speed
Nokia 9110
Nokia 9210
HiSaX based
AVM B1 ISA
V.110/9600
AT+CBST=71
Normal / V.110 ISDN
AT+CBST=71,0,1
&R9600
(default: S19=197, matching)
&R9600S19=0
V.110/19200
not supported
High Speed / V.110 ISDN
AT+CBST=79,0,1
&R19200
(default: S19=199, matching)
currently not tested
V.110/38400
not supported
High Speed / V.110 ISDN
AT+CBST=81,0,1+CHSN=0,3,0,12;+DS3
&R38400S19=192
(default: S19=198, not matching)
currently not tested

Additional AT command extensions / notes:

Nokia Communicator 9210
ISDN cards

If someone know, how to support V.120/43200, I would be very happy about such.

PPP


X.75

Terminal access

Linux server side


PPP

Linux server side

X.75 client side (i.e. Hyperterminal and RVS software modem emulation)


Common hints


Debugging (Linux side)

Log files


List of related links and manual pages of interest




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