Boss and secretary phone, privacy, one touch memory

Intercom facility between two phones
Call transfer facility from 1 to phone 2 & vice versa
Privacy during conversation with external party
Dual mode FSK/DTMF CLI system compatible
Two ways speakerphone
3 one touch memory (M1, M2 & M3)
16 digits big LCD display with blue backlight
Auto add "0" in call back
Display of incoming number, new call, repeat call
Checking, erasing for incoming/outgoing calls
28 incoming calls memory
10 outgoing calls memory
Pre-dialing & clearing function
5 step LCD contrast adjustable
Programmable flash time with 5 options (80ms, 110ms, 300ms, 600ms, 1000ms)
Programmable selectable tone/pulse dialing mode
Dynamic changeover from pulse to tone
Last number redial
Programmable pause features with 4 options (1s, 2s, 3s and 4s)
3 step ringer volume switchable