Portech IBS-40 IP Broadcast System: handle 40 pcs

IBS-40 Broadcast handle 40 pcs IS serial devices (IS-640, IS-640P, IS-640, IS-660, IS-670, IS-381, IS-382, IS-3840)
IP Broadcasting system(IBS),we will provide akeypro (like usb Dongle)You just insert keypro in any pc and install the IBSsoftware. Then you can set voice broadcasting/musicbroadcasting/ schedule broadcasting to singlespeaker or group speakers.