... ,CDMA cellular network outgoing.2,CDMA cellular network incoming.3,DTMF Caller ID.4,Support secondary dial.5,Lock card, lock terminal.6 ... ,Power Supply: DC 5Vadapter AC 110~240 input7,DTMF Receive: > -23dB insure receiving.8,DTMF Receive sensitivity: 99.99%9,Insertion loss ...