Can Asterisk be used for this type of intercom system?

I am new to voip and am not sure what application it can be used for, but I am looking to set up a 2 way intercom system over a network. Where each user has a choice of a push to talk button or an open line of communication. Can this be done using Asterisk? or does anyone know if there is a better way to do this?

Cheers.

Col.

The best advice i can tell you is Install asterisk and make a conference room.
the configuration of conferences rooms are in /etc/asterisk/meetme.conf

Bye and Have a Nice day
GNU

absolutely Asterisk can be used an intercom for one or many different users at once. Our company uses Asterisk as a central bridge and we Push to Talk with our VS-71 SIP Devices. See our web site at www.essentialtel.com.