Hey

I have setup a new office with 2talk softphone on some pc's and am having an unusual problem. When one person uses 2talk they can make outgoing calls no problem, and have no issues. When the second person trys to make calls, they can hear the first persons calls when the try ringing a completely separate number and can't make there own and the first person can hear the second person......

Does this sound router related and sip compatibitity issue or something else maybe?

Thanks in advance for the help