Real sing
Chord music
4 music key tones
Chord music beat color lamp of incoming telegram
Predial numbers,off-hook,incoming
43 groups 12 digits outgoing numbers
9 groups 12 digits outgoing numbers
3 groups alarms clock function
FSK/DTMF dual systems
Thunder protection and Anti-EMI
Wiretap protection,ling distance key lock
Voice talking CID function
IP swift,keep secret dialing