A48 is a 4 SIP accounts with a 3.2-inch 462x278 pixel color screen IP Phone, which has 4 soft keys, 8-speed dial programmable keys and extended to 4.3-inch 480x272 pixel TFT LCD extension module, convenient operation performance and friendly UI, and TIA920 high definition wideband voice standard, with clear HD voice. It is designed for business level enterprise unified communication application.