6 lines, 6 SIP accounts, 7-way voice conferencing Runs Android 4.4 and offers access to the Google Play Store Bluetooth to support syncing of headsets and mobile devices Built-in 7-way conference bridge 4.3" (800x480) capacitive touch screen for easy use Auto-sensing Gigabit port, built-in PoE support Built-in Wi-Fi support offers mobility and network flexibility Full HD audio support to maximize voice quality Daisy-chain support to combine two GAC2500 together TLS and SRTP security encryption