New and orignal huawei device GSM to analog converter MT90 MINI STATION VOCE MT90 is a GSM to Analog Converter(single port, insert 1 SIM card only), the device can produce a FXS line to allow a regular phone to be connected and used just like a local landlin(PSTN) except your calls will go out the GSM network. This device can both receive and make call. The main application is: Connecting the RJ-11 FXS line to connect Ordinary telephone set for voice call, to connect PBX for call extentions, to connect billing systems for public phone use, to connect VoIP gateway to realize VoIP call termination, to connect alarm system for security purpose, etc. It is not a VoIP gateway, nor a GSM+VoIP gateway, It is a GSM Fixed Wireless Terminal that produces a Analog FXS phone line. USAGES: 1) Connecting to Ordinary Telephone Draw your attention: Because there are many types of ordinary telephone and their electric parameters are different. In order to avoid mutual disturbance between telephone and terminal and affect voice quality. The distance between telephone and terminal is 1.5m at least. 2) connecting to PBX for call extentions If users want to connect small PBX to this terminal, connect terminal's "Phone port" to the PBX. 3) connecting VoIP gateway for Call Termination Suppose a VoIP call originates from US, which was transferred from US Server to China Server on VoIP, finally the call will be terminated from internet to GSM network and to be sent out to the destination answer side. 4) connecting to alarm system for Security The GSM FWT can substitute the PSTN for connecting to alarm system for security purpose when PSTN failure or not available.