Question : Can anyone recommend a VoIP software which I can use in my speech lab class using headsets on the computers?
I would really want to use a software wherein I would be able to set up my own server and configure it in a class. I would also prefer freeware or service providers to provide simple but quality VoIP services.

I’m planning just to have a voice chat connection with my student’s computers in order to check them during our speech lab sessions.

Thank you very much.
Does anyone know a VoIP software capable on LAN? My class uses LAN. Thank you again!
voip software

Best answer:

Answer by Bartleyman
Asterisk – for your own server…

http://www.voip-info.org/wiki-Asterisk

http://www.onlamp.com/pub/a/onlamp/2003/07/03/asterisk.html

(in case you want to teach your students how to build their own computer: http://www.learntobuildcomputers.com)

then you’ll need a sip trunk:
http://www.sipnumber.com/ – free

http://www.fonosip.com/english/asterisk-athome2.html