Tag Archives: VoIP
Success on the BGAN from Masaya Volcano…
Yesterday we successfully connected to Paul at the volcano using the BGAN satellite link. The following set of (five) posts will try to cover the tests we carried out, these include: Getting audio contact Video and audio synchronisation A walkabout … Continue reading
Getting audio contact
The attached video shows the point at which we got our first audio contact at the Volcano. At this point the video was running at a quarter PAL resoluction (160 x 120 pixels) at five frames per second and a … Continue reading
Video and audio synchronisation
To test how the audio and video streams are performing we do a simple five-finger test. This involves counting down from five to one using your fingers. The idea behind it is simple – the audio and video streams are … Continue reading
Video resolution configurations
We’ve used quite a few different video resolutions and a couple of frame rates. In all cases we’ve kept a constant bit rate of 200Kbps – Richard at callmonitor.com recommended this setting and it has served us well. Higher bit … Continue reading
Photo downloads with and without audio
The final test we did with Paul at the volcano yesterday was to download a photo while talking on the VoIP phone at the same time. The router currently gives no priority (or Quality of Service preferences) to audio data … Continue reading
Asterisk running peer to user
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 … Continue reading
MeetMe testing
Last Wednesday we did some testing of our Asterisk MeetMe setup, at dekspc medialab in London. Setting up the Asterisk server on the local wired LAN and assembling an assortment of 6 SIP clients, using Ekiga on both Windows and … Continue reading
Set up Asterisk conference calling with MeetMe.
I made my first (2-way) conference call on Asterisk/Meetme just now. To enable MeetMe with Asterisk, you first need to edit your meetme.conf in /etc/asterisk/ , mine looks like this:
Using smartphones as …phones.
Could it be that the way to make a telephone call on a geology site would be to use a telephone? Now we seem to have some fairly stable WiFi networking hardware, and are considering that we might ditch the … Continue reading
The curse of ERA strikes again! (sunshine :-) )
The curse of ERA – bringing sunny weather to field trips – strikes again! Despite packing gaiters, gortex, and waterproof sample bags to protect our kit, it was the sunshine rather than the rain that was the challenging weather for … Continue reading