T4 series Expansion Module

***************Best Quality Guranteed.*****The EXP40 Expansion Module for the SIP-T46S, SIP-T46G, SIP-T48S and SIP-T48G.*****Expanding the functional capability of your sip phone to a whole new level.*****Equipped with a 160×320 graphic LCD with Backlight. 20 physical keys each with a dual-color LED and two page views are possible.*****Supports up to 6 Expansion Modules for an attendant console application, adding up to 240 additional buttons.*****Two pages of 20 flexible buttons are shown on the display can be programmed up to 40 various features, the productivity-enhancing features include BLF/BLA, speed dialing, call forward, transfer, park, pickup, etc.