x-Lab PABX XPB-3800

-Do Not Disturb (DND) Feature
-Telephone Conference
-No Answer Transferred
-Two-wire Communication Structure
-Multiple Communication Lines
-Call Transfer/Call Pick Up
-External/Extension/Transfer Caller ID
-Call Duration Control
-Outgoing Call Class/Call Restriction
-Three Party Conference
-Call Monitor
-Operator Attendant
-Extension Number Assignable
-Auto Attendant
-Busy Transfer
-Memory Protect while Power off