SIPping Wonderland

April 6, 2012

By Bernard Horan

One of the great features of Open Wonderland is its telephony support. In this blog post, I provide a few examples of standard VOIP clients that use SIP to call into an Open Wonderland server. It may seem odd to use an impoverished audio connection to a rich immersive 3d environment, but there are many occasions when users wish to participate in meetings from locations or using devices that are not able to provide the full Open Wonderland experience.

In the video below, I show some examples of how to use two of the many SIP clients to call into an Open Wonderland server. The first of these, Jitsi, is an open-source Java-based client that can be used on a regular desktop/laptop. The second client, 3CX, is available for iPhone (iOS) and Android platforms. The video provides three examples:

  1. Using Jitsi to connect, registrar-less, to an Open Wonderland server running on a local network
  2. Using Jitsi to connect, authenticated, to an Open Wonderland server running on a host on the public internet
  3. Using 3CX installed on an iPad to connect, authenticated, to the same server as in (2). (The settings for the 3CX client are provided at the end of this post.)

These examples augment the existing¬†video that shows how to use a virtual phone to call out via a PBX. There is nothing special about the Open Wonderland installations that I’m using for the demonstrations. The only requirement before producing the examples was to insert a Virtual Phone into the virtual world using the standard ‘Insert Object…’ dialogue. In detail:

  1. The first example uses a source build (rev 4820) of Open Wonderland, with no authentication enabled, running on my home local network.
  2. The second and third examples both use a binary installation (rev 4816) of Open Wonderland, with authentication enabled. The installation is hosted on a public internet-facing server at the University of Essex that has its firewall configured according the the Open Wonderland firewall instructions.

Many thanks to Morris Ford for his guidance on using SIP.

For information about the settings I used to connect the 3CX client, see the figure below.

3cx-Settings


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