RFT-342R is the latest four ports VoIP ATA from RAFON Technology. RFT-342R supports the wildly used industrial standards, both SIP and H. 323, in a single firmware. Switch to different a protocol only needs simple configuration and no firmware upgrade is needed. RFT-342R provide four standard 24V FXS ports, which can connect to standard handset, cordless phone or PBX. It also supports caller Id display on incoming calls. The device is easy to configure, compact and well designed, offers toll quality voice and low cost. It's ideal for VoIP service provider and system integration.