Tell me about voyager 2500.how does it work, how many computer can we connect to it and how:( :(

I'm not familiar with that model, but if you go to the mfg's web site it should list those specs.

If its an 802.11 router it works using the 802.11 protocols for wireless networking.

This router connects your DSL service to a number of wireless computers that have wireless cards installed already and up to 4 wired computers that have network cards installed.
The exact number that you can connect changes with your use, surfing the internet VS gaming or other intense use and the type of DSL speed your service provides.