1.3 x PTT Adapter Cables 2.H.323&SIP V2 3.g.711/g.723/g.729 Radio Over IP Gateway RoIP 302 Description:What is a Cross-Network Gateway?It enables voice communications among the Radio, VoIP, GSM, and Public Announce (PA) networks.It incorporates Radio over Internet Protocol (RoIP) which converts radio voice communications into VoIP.It links up various radio networks together in order to extend the ...