4 Channels VoIP GSM/ CDMA/ UMTS Gateway MV-374 is a 4 channels VoIP GSM/ CDMA/ UMTS Gateway for call termination ( VoIP to GSM/ CDMA/ UMTS ) and origination ( GSM/ CDMA/ UMTS to VoIP) . It is SIP....
PORTech is a manufacturer in taiwan. PORTech major in UMTS Gateway, CDMA Gateway, 1/ 4/ 8 ports GSM Fixed Wireless Terminals( Follow Me GSM Gateway) , 1/ 2/ 4/ 8 channels VoIP GSM Gateway, SIM Server....