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Version 2.0.100 

* Added more details on how to increase number of channels
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hessler 2005-08-20 22:30:33 +00:00
parent b93d2b657d
commit 20600623b8
1 changed files with 22 additions and 5 deletions
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FAQ/i4lfaq.sgml
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@ -4,7 +4,7 @@
<title>FAQ for isdn4linux
<author>Matthias Hessler (<tt><htmlurl url="mailto:hessler@isdn4linux.de" name="hessler@isdn4linux.de"></tt>)
<date>v2.0.99, 7 August 2005
<date>v2.0.100, 21 August 2005
<abstract>
If you are reading this FAQ online, you may consider downloading the whole
thing, and reading it offline (much cheaper). To download the latest
@ -1775,10 +1775,27 @@ id="contr0%contr1"
channels?
<label id="config_manychannels">
<p>
Increase the parameter ISDN_MAX_CHANNELS in
<tt>/usr/src/linux/include/linux/isdn.h</tt> and rebuild the isdn stuff. Don't
forget to create the additional devices with makedev.sh (part of isdn4k-utils)
or by hand.
You can adjust the parameter ISDN_MAX_CHANNELS and the ISDN_MINOR* parameters
in <tt>/usr/src/linux/include/linux/isdn.h</tt> and rebuild the isdn stuff.
It is unlikely you have more than 64 physical B channels available, therefore
you probably want to leave ISDN_MINOR_B and ISDN_MINOR_BMAX as they are.
Your bottleneck are probably the number of potential (logical) network
connections (ipppX devices). The maximum number for this (ISDN_MAX_CHANNELS)
is 127, since the minor devices start at 128 (see ISDN_MINOR_PPP) and have to
end before 255 (ISDN_MINOR_STATUS).
To further increase the maximum number of logical connections you either
have the possibility to use an additional major (e.g. 44 - not used any
more) - this requires some small changes to the driver and the installation
of one ipppd instance per logical connection; or to use only one
ipppd per physical B channel with external Radius authentication. In the
first case you have to modify and recompile the driver, in the second case
you have to modify and recompile ipppd (you'll find some preparations for
this already in the source code).
Don't forget to create the additional devices with makedev.sh (part of
isdn4k-utils) or by hand.
<sect1> config_gsmv110: How do I connect my PalmPilot via GSM over V.110
to my computer?