IMPORTANT: Alpha Release Notes
The current version of the gateway is still in the alpha stage. As such, you
will probably encounter problems. We would greatly appreciate it if upon
encountering a problem, you could please relay as much information and
context as possible about the problem to
The following libraries and capabilities are required for a build of the
The video gateway has been built and tested on the following platforms:
In the current directory follow the following steps:
% ./configureDue to ambiguities in the naming of the new and old versions libtcl and libtk, if you have more than one installation of these libraries you should verify that LIB_TCL and INCLUDE_TCL have been defined appropriately in ui/Makefile and engines/Makefile, and LIB_TK, LIBRARY_TK, and LIBRARY_TCL have been appropriately defined in ui/Makefile. If you only have one version of tcl/tk (7.5/4.1) on your system -- you can ignore the previous comment.
% make depend % makeThe standard installation directory is /usr/local/bin. If you wish to change this directory, edit at this point the 'install' target of ./Makefile.
% make install
Running The Gateway
The install will install the programs vgw_ui, vgw,
and agw. To run the gateway, simply type:
% rtpgw_ui -T [audio|video] sessionA sessionBwhere sessionA and sessionB are two conference sessions specified as colon separated lists of addresses of the format: addr/port[/ttl].
The following transcoders exist in the current version of the gateway:
H.261 Encoder Note
The H.261 format used in the gateway is not compatible with vic versions
prior to the versions prior to 2.7. Thus, in
order to view the output of the gateway, you must install
vic-2.7 or later.
This work was supported by:
The AT&T Fellowship, ARPA Contract #DAAB07-95-C-D154, ARPA Contract #J-FBI-93-153, California MICRO Program, Hughes Aircraft Corporation, Metricom Corporation
Steve McCanne (email@example.com)