README for Internationalization of Isdnlog
  ------------------------------------------

  Some remarks for building isdnlog for different countries.

  Isdnlog contains till now some country specific code, which makes it
  difficult, to build a version of isdnlog for countries not listed in
  make config.

  There are mainly three areas, where adaption could and will be necessary:

  1) The ISDN protocol itself
  2) Decoding telephonnnumbers for alternate telephon providers
  3) Datafiles

  ad 1)
  The problem is, that in the ISDN-protocol there are some country specifc
  variations, which are by now handled by preprocessor defines in code itself.
  An isdnlog binary built for Germany or Austria might run in other
  countrys too, but is not guaranteed to.
  If you have troubles with isdnlog itself please contact
  Andreas Kool <akool@isdn4linux.de>.

  ad 2)
  Isdnlog since version 3.57 has 3 new options for configuration in
  /etc/isdn/isdn.conf.

  These are
     VBN   .... Alternate provider prefix
     VBNLEN ... Number of digits following VBN
     PRESELECTED ... Default provider number

  s. isdnlog/samples/isdn.conf.* for examples

  e.g. in Austria VBN=10, VBNLEN=2
  The telephon number 1002012345 is decoded a 1002 1 2345, a call with provider
  #2 (UTA) to city Vienna (1) and local numbe i.e MSN 2345

  We are in a process of concentrating this country specifc stuff in the
  module tools/telnum.c.
  If you have some adaption for it please let me know.

  ad 3)
  Isdnlog and the accompanying utils isdnrate and isdnrep rely on
  datafiles, which are by now built during the make-run for the selected
  country from make config => Options for isdnlog
  (s. tools/zone/Makefile.in and tools/dest/Makefile.in for details).

  As of this writing versions for DE, AT and NL are ready.

  To build datafiles for a country not handled by now, please follow
  these steps:

  Isdnlog /-rep /-rate use mainly these datafiles:

    rate-CC.dat ... telephonrates per provider / zone / daytime
    zone-CC-PPP.gdbm ... zone files per provider PPP
    holiday-CC.dat ... exactly what it sounds like
    dest.gdbm ... international destinations

  where CC is your (ISO) countrycode, also known as TLD (Top Level Domain).

  3a) rate-CC.dat

    This file holds telephonrates per provider / zone / daytime.

    man 5 rate-files

    should give you the necessary information to build a rate file.
    It might be also helpful to look at e.g. rate-at.dat for a working
    version.
    Since isdnlog 3.57 the raw rate files (with explicit country names)
    have to be preprocessed with the utility dest/pp_rate, where the
    country names are replaced by their ISO-codes.
    s. tools/Makefile target AT: for an example.

  3b) zone-CC-PPP.gdbm

    These files hold information about domestic zones. This is a list
    of from-to-zone entries for all possible domestic destinations.
    If your telephon provider charges the same amount despite of
    source and destination of call, you don't need this.
    s. tools/zone/zoneutils.html and CC subdirs below zone for more
    information.
    You might ask your telephon provider to give you a file about how
    much is the charge for a telephon call from each x to each y.
    In Austria a small Perl script "asked" a web page of the provider
    for this info.
    s. also zone/Makefile.in for building the zone database.

  3c) holiday-CC.dat
    Just make a copy of an existing file and edit it.

  3d) dest.gdbm
    The destination database is built from the following textfiles:
    - country.dat ... International telephonnumbers mainly of countries
                         with german and english country names
    - cities.dat ... international cities
    - code-CC.dat or zone/CC/code ... domestic city names with telephon numbers

   For the beginning you can use the standard dest.gdbm. If you want to have
   your city names instead of numbers only in the log-files, you can add
   your city codes to the database.
   s. dest/Makefile.in and dest/makedest for usage.

   IF you have datafiles ready for different countries, please let me know.


   And finally, this whole process is handled by various make files,
   which are built depending on information taken from idsnlog/.Config.in.


  -lt-
  Leopold Toetsch <lt@toetsch.at>	26.10.1999