3. Configuring IP Phones for use with Asterisk
Overview:
Asterisk allows people to communicate using the internet. It is one of the cheapest ways to talk. The PC clients connect to each other through an Asterisk server which uses a Linux/Unix OS.
Asterisk calls can be passed through different channel protocols. The most popular forms of calls are H323, SIP, IAX or Zap. Depending on the type of channel you use, the user must have the appropriate software to handle the call type.
via Configuring IP Phones for use with Asterisk.
