Snom Technology M18 KLE SIP DECT 4 Line Deskset Remote Control Wear Resistant Inscription Of The Sizes Tweeters Wear Resistant Inscription Of The Sizes Of The L Keys Contained On The Clip 700 Watts Total Channel Micro Amplifier with wire harness 000 entries Call history up to 200 entries XML LDAP remote phonebook Do Not Disturb (DND) 3 way local conference N way network conference External Internal call transfer between DECT phones Intercom between DECT phones1 Mute Redial Call transfer: blind attended Call hold Call forwarding: per line basis (busy always no answer) Call timer (call duration) Caller ID Phonebook matching (incoming and outgoing calls) Multi language support Keypad lock 36 hours 7 hours standby time talk time Included AC Adapter Deskset battery: 2 5mm corded headset jack 4 line call handling between active and held Local phonebook up to 1