★SMT entire automatically installs the primary device (mobile phones, wireless telephone and so on upscale product with same production line) ★Imports the ABS plastic, imports the PC material, exclusive recipes, is unique anti- falls guards and against the ultraviolet ray function; ★Uses the double color to cast as well as a more advanced laser carves characters, the seepage printing craft, causes the key never to attrition; ★The specialized design surface version, may print material and so on hotel insignia, telephone use guide, hotel servicing facility,greatly promotes the hotel image; ★One key connect (+10) ★The mature lines design of message lamp, is suitable for each kind of model switchboard;； ★DTMF dialing ★Flash time adjustable to different exchange and three way talk , standard flash time is 600ms； ★Music on hold； ★Electronic ring melody , Volume four level adjustable , New incoming message LED indicator； ★Auto follow call；Auto hang up ★Data socket ★thunder-proof and Anti_EMI design