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143 lines
3.9 KiB
143 lines
3.9 KiB
Open H.323 Channel Driver for Asterisk
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By Jeremy McNamara
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For The NuFone Network
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First public release on November 10th, 2002
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Dependancies: openssl-0.9.6b+
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openssl-devel-0.9.6b+
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expat-1.95+
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expat-dev-1.95+
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You must run Open H.323 v1.15.1 and PWLib v1.8.1. All other versions are not supported.
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You can find the Open H.323 source here: http://www.sf.net/projects/openh323/
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NOTICE: Whatever you do, DO NOT USE distrubution specific installs
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of Open H.323 and PWLib. In fact, you should check to make sure
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your distro did not install them for you without your knowledge.
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To compile this code
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--------------------
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Once PWLib and Open H.323 have been compiled per their specific build
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instructions, issue a make in the asterisk/channels/h323 directory,
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then go back to the Asterisk source top level directory and issue a make
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install.
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The most common compile error
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----------------------------
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If you receive ANYTHING that says 'undefined symbol' you are experiencing
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typical version skew. For example:
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libh323_linux_x86_r.so.1: undefined symbol: GetNumberValueAt__C14PAbstractArrayi
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You need to search and destroy every version of libh323 and libpt then
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completely recompile everything
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Example commands to make sure everything gets cleaned and then
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rebult in proper order:
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cd /path/to/pwlib
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./configure
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make clean opt
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cd /path/to/openh323
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./configure
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make clean opt
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cd /path/to/asterisk/channels/h323
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make
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cd /path/to/asterisk
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make install
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Most common run-time error
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-------------------------
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libpt_linux_x86_r.so.1: cannot open shared object file: No such
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file or directory
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You have not set the LD_LIBRARY_PATH environment variable.
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Example environment for sh/bash:
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PWLIBDIR=$HOME/pwlib
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export PWLIBDIR
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OPENH323DIR=$HOME/openh323
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export OPENH323DIR
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LD_LIBRARY_PATH=$PWLIBDIR/lib:$OPENH323DIR/lib
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export LD_LIBRARY_PATH
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We recomend puting the above directives into your /etc/profile so
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you do not have to remember to export those values every time you
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want to recompile. Make sure to logout and log back in, so your
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envrionment can pick up the new variables.
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Upgrading Asterisk
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-----------------
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After you cvs update (or make update) Asterisk you have to go into
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asterisk/channels/h323 and issue a make clean all, before compiling the
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rest of asterisk. Doing this process every time you upgrade Asterisk
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will ensure a sane build.
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Dialing an H.323 channel
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------------------------
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Without a gatekeeper:
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exten => _1NXXNXXXXXX,1,Dial,H323/${EXTEN}@peer
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or
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exten => _1NXXNXXXXXX,1,Dial,H323/${EXTEN}@ip.or.hostname
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'peer' is defined in h323.conf as:
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[peer]
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type=peer
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host=1.2.3.4
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disallow=all
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allow=ulaw
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Using a gatekeeper:
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exten => _1NXXNXXXXXX,1,Dial,H323/${EXTEN}
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When using a gatekeeper you cannot utilize the type=peer features,
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since the H.323 spec states that when a Gatekeeper is part of an H.323 network,
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the Gatekeeper shall be used for all communication.
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Developer Contact
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----------------
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If you have trouble contact 'JerJer' in #Asterisk on
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irc.freenode.net and/or send reasonable debug information to support@nufone.net.
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If are lucky enough to segfault this code please run a
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backtrace and send the gory details. Segmentation faults are not
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tolerated, no matter what Distro you run (even debian)!
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a simple bt example:
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# /usr/sbin/asterisk -vvvgc
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...
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[chan_h323.so]
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Segmentation Fault (core dumped)
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# ls core.*
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core.1976
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# gdb /usr/sbin/asterisk core.1976
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...lots of useless garbage here...
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(gdb) bt
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Send whatever shows up right after the 'bt'
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Also, a full debug screen output is almost needed. Make sure you are
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in the full console mode (-c) and turn on 'h.323 debug' or worst case
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senerio 'h.323 trace 4'. A nice way to capture debug info is with
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script (man script).
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If you are motivated to update/fix this code please submit a
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disclaimer along with the patch to the Asterisk bug
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tracker: http://bugs.digium.com/
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Jeremy McNamara
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The NuFone Network
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