The Yealink W53P is an entry level IP phone system can support up to 12 SIP accounts. It can combine up to 8 W53H DECT handsets. It's compatible with the Yealink W60B DECT base station.
 
Key Features:
Compact design
Exceptional handsfree talking
1.8'' 128x160 TFT color screen with intuitive user interface
Headset connection via 3.5 mm jack
Up to 18 hours talk time (in ideal conditions)
Up to 200 hours standby time (in ideal conditions)
Elegant keypad with backlight and keypad lock
 
Datasheet