[Asterisk-Users] Gatekeeper

[Wayne Methorst]

Hello   I am a newbie to Asterisk. We have set up Asterisk on a PC with Redhat 9.0. We have installed H323 openphone on our PC's. We are wondering what a gatekeeper does. It seems we need one but what I have seen in this group is that a gatekeeper must be installed on another box on the network. As all our PC's on the network use Microsoft OS is there a free gatekeeper software for microsoft operating system?   Does Asterisk have a built in gatekeeper?   Many thanks Wayne