Details：
Ordinary dialing function, handset mode; support for checking busy tone, automatic hang-up function; 3 groups of blank keys on the right side can pre-store numbers for one-touch speed dialing; compatible with various program-controlled switches, support switch's multicast function
Details：
Handset mode, normal phone usage; RJ45 interface, capable of supporting POE; The display screen displays the IP address or call number; When called to ring, the alarm light flashes; Supports speed dial function, with 3 sets of one touch dialing; WEB page registration configuration, automatic response, hotline number, no disturbance and other methods; Compatible with various SIP protocols IPPBX, supporting alarm broadcast video triggering linkage
Details：
Handsfree mode, one click call usage; RJ45 interface, capable of supporting POE; Power supply method: POE or DC12V; When called to ring, the alarm light rings and flashes; Support quick dial function; WEB page registration configuration, automatic response, hotline number, no disturbance, and other methods; Compatible with various sip protocols IPPBX, supporting alarm broadcast video triggering linkage
Details：
Handsfree mode, one click call usage; Fiber optic interface, capable of supporting POE; Power supply method: POE or DC12V; When called to ring, the alarm light rings and flashes; Support quick dial function; WEB page registration configuration, automatic response, hotline number, no disturbance, and other methods; Compatible with various sip protocols IPPBX, supporting alarm broadcast video triggering linkage
Details：
Hands free mode, ordinary telephone usage; Optical fiber interface, DC12V power supply; When being called to ring, the loudspeaker rings and the alarm light flashes; Support speed dial function, 4 groups of one touch dialing; WEB page registration configuration, automatic response, hotline number, no disturbance and other methods; Compatible with various sip protocols IPPBX, supporting alarm broadcast video trigger linkage
Details：
Handset mode, ordinary telephone use mode; Optical fiber interface, DC12V power supply; When being called to ring, the loudspeaker rings and the alarm light flashes; Support speed dial function, three groups of one touch dialing; WEB page registration configuration, automatic response, hotline number, no disturbance and other methods; Compatible with various sip protocols IPPBX, supporting alarm broadcast video trigger linkage
