Asterisk-iMerge

Simon's Goal:

I am attempting to configure Asterisk[1] to create an H.323 session with a Lucent iMerge[2] gateway on Sprint Canada's network. The end goal being able to terminate VoIP calls on the Asterisk via the iMerge, which is in turn connected to the PSTN.

Presently, I'm attempting to get the inAccessNetworks OpenH323 driver to talk to iMerge, as that as where others[3] seem to feel progress will be made.

Status (2005-02-15):

Working:

Multiple simultaneous inbound calls
Calls of any length
Single outbound call

Broken:

The asterisk-oh323 driver only seems to allow outbound calling through a single alias. Confirming whether this is true or not, and what would need to be changed to allow calling out on multiple lines.
Line password authentication doesn't work

Resolved Issues:

Asterisk will register a line with iMerge, and terminate calls, but they are disconnected after at most 1m20s due to iMerge not being able to interpret an "information request response" sent by Asterisk -- Ezra found a fix for this, it's been posted on the voip-info[3] website.

Building Asterisk on Slackware Linux 9.1 with inAccessNetworks OpenH323 driver:

I've written a build script to perform the steps I had previously documented on this page. Edit the 'BASE' variable to change the installation location. The script is dependent on 'wget' for file downloads.

Download build script (Posted 2005-02-08)

Local copies of the source code that I used to build this (automatically downloaded by build script):

Testing with SJPhone:

Notes about network connectivity:

SJPhone (and I imagine other SIP phones) need to be able to accept incoming connections on port 5060, and must advertise a reachable address
Or, I imagine you can run a SIP proxy service on your gateway/NAT

Below this point are my past attempts

Install the OpenLDAP package.

Visit http://www.openh323.org/build.html, and download the source for PWLib, and OpenH323 tarballs.

extract both archives to a directory, i.e. /tmp

 # cd /tmp/pwlib
 # make opt
 # make install
 # cd /tmp/openh323
 # export OPENH323DIR=/usr/local/openh323
 # export PWLIBDIR=/tmp/pwlib
 # make opt
 # make install

Go to your channels directory of the Asterisk source tree, and build the h323.so library

 # cd /tmp/asterisk-1.0.0/channels/h323
 # export OPENH323DIR=/usr/local/openh323
 # export PWLIBDIR=/usr/local/pwlib

Edit the make file, and change the line:

 CFLAGS += -I$(OPENH323DIR)/include -I$(OPENH323DIR)/include/openh323

To:

 CFLAGS += -I$(OPENH323DIR)/include

Head on over to the asterisk source root, edit your Makefile, set your INSTALL_PREFIX, and do:

 make && make install

last edited March 9, 2005 — ( info ) ( diff )