Included also is Caller ID (with 100 entries), a digital answering machine, and digital security. As for transmission between the base unit and handset(s), it is based off DECT 6.0 technology—built specifically for enhanced range, sound-quality, and digital security. Additional features of the VTech LS6245 include integrated polyphonic ring tones (sound better than conventional ring tones), a large reverse LCD screen, and volume controls.