... and fashion Main Functions:1,Have unique hands-free function;2, Display clock real-time;3, FSK / ... back;5, Electronic anti-thunder, anti-theft dialing function;6, Set local area code , to hang ... in the left termination handset jacks .3. Caller ID is workable only for the applicator for the local ... the implementation of telephone calls do not display function,unplug the telephone line,take out battery to ...