Grandstream Networks Android Enterprise Conference Phone (GAC2500) This is a POE conference phone does not come with power adapter power adapters are not included and are sold separately 6 lines, 6 sip accounts, 7-way voice conferencing and built-in 7-way conference bridge Runs android 4.4 and offers full access to the Google Play Store and all android apps, such as Skype, Google Hangouts and more Bluetooth to support syncing of headsets and mobile devices and 4.3" (800 x 480) capacitive touch screen for easy use Auto-sensing gigabit port, built-in POE support, built-in Wi-Fi support offers mobility and network flexibility. Refer to the PDF attached below in Technical Specification for Manuals.