diff --git a/FAQ/i4lfaq.sgml b/FAQ/i4lfaq.sgml index 2539a4dc..853481c4 100644 --- a/FAQ/i4lfaq.sgml +++ b/FAQ/i4lfaq.sgml @@ -4,7 +4,7 @@ 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?