2-way hands-free speakerphonefor true hands-free conversationTest
Functions: (1) Data indicationwarns when data is present; (2) Voltage indicationtroubleshooting feature to identify potential line problems; (3) Current (mA) indicationverifies sufficient line current; (4) Caller-IDverifies service is functional; (5) DTMF Digit Grabbingisolate faulty customer premise equipment