1.The specialized design surface version, may print material and so on hotel insignia, telephone use guide, hotel servicing facility,greatly promotes the hotel image; 2.one key connect (+5) 3.Message light 4.Convex Message light , look at it anywhere in room 5.Data socket 6.DTMF dialing and two way dialing 7.Volume adjustable 8.Close Volume 9.14 digit Stored number and it is can not lost if lost power 10.handsfree Volume four level adjustable 11.The volume of shock ring two level adjustable and open/close 12.Handsfree,double re-dial,R key 13.Retain music HOLD 14.Hang up by itself 15.Wall angle change 16.waterproof and moistureproof 17.thunder-proof and Anti_EMI design