PORTech is the original manufacturer in Taiwan with 42 years; therefore we’ll do our best to offer the best service and supportPORTech majorIP SpeakerIP Audio GatewayIP Broadcasting SystemVoIP GSM Gateway3G 4G VoIP GatewaySIM ServerRemote SIM BankGSM Fixed Wireless TerminalsFWT,FCTIP Audio Gateway IS-381 : 1 port IP Audio Gateway IS-382 : 2 ports IP Audio Gateway IS-3840: IP Audio Gateway-(build in amplifier) SIP SpeakerIS-640 : IP wall wood Speaker IS-640P : IP wall wood POE Speaker IS-650: IP Horn POE Speaker IS-660: IP Ceiling POE Speaker IS-670: IP Wall Mount POE Speaker IP Broadcasting SystemUser can broadcast announcements to a group of office or branch or classes. IBS-5: handle 5 pcs IS serial devicesIBS-10: handle 10 pcs IS serial devicesIBS-20: handle 20 pcs IS serial devicesIBS-40: handle 40 pcs IS serial devicesIBS-60: handle 60 pcs IS serial devicesIBS-80: handle 80 pcs IS serial devicesIBS-200: handle 200 pcs IS serial devices