Specifications: 1) It can connect with ordinary telephone set, PBX , VOIP Gate way, Billing meter etc. 2) Dialing tone frequency : 450hz; 3) Employ Industrial module to make; 4) SIM card supported (1.8V, 3V); 5) Caller ID display. Time, date, Signal display 6) DTMF Dialing (FSK is optional) 7) Bell signal 8) Polarity reversal 9) The RJ-11 socket which connect the phone or billing system for metering purpose 10) Antenna socket (SMA) 11) Working status and Signal Strength by LED indicator 12) IMEI Change (Presentable) 13) Supports modem mode 14) Automatically connects to IP network when dialing long distance (Presentable) 15) Dial number Block (Presentable) 16) Incoming number Block (Presentable) 17) Volume adjustment. Time and date setting. 18) Auto card-locking and net-locking. (Presentable)
