Author Archives: Trevor Collins

Asterisk running peer to user

IAX Dual Server web page image

IAx Dual Server - Peer to User configuration for registering an Asterisk server with a dynamic IP with a static IP Asterisk server.

We’ve been developing VoIP support for ERA in the Portable VoWLAN Project (funded by JISC). JANET, through their Portable WLAN Programme, are helping us to investigate backhaul links so that our field students could access resources over the internet.

We’ve recently been using IAX2 to connect two Asterisk servers. Initially, the two Asterisk machines were on fixed IP addresses and all was working well. However, we wanted to arrange things so that one of the servers could be running on a netbook and connecting to the internet with a dynamic IP address (either through ADSL, a 3G mobile broadband connection, or a satellite link).

After a little hunting we came across the Asterisk – dual servers page on the voip-info.org wiki. Following their guidelines for users and peers we now have a (dynamic IP) field site Asterisk server that can connect and register with our (fixed IP) base server. Now anyone in the field can talk to anyone on the OU network.

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Welcome to the Portable WLAN Blog

Chris on Whitby foreshore testing voice and video; note headset and external camera, with field antennae in the background

Chris on Whitby foreshore testing voice and video, with field antennae in the background

This blog has been set up as a place for notes and field data collected as part of the Portable WLAN project.

Mark O’Leary and his colleagues at JANET are running a Portable WLAN Programme to investigate options for extending network access to off-the-grid locations. As part of that programme we’re looking at ways in which a portable wireless local area network can be used to support fieldwork courses, and potential options for connecting the local network to the internet in order to provide internet access for field students as well as field access for remote students and tutors on the internet.

This work builds on and contributes to our ongoing research in the Enabling Remote Activity project.