Grandstream GXP2200 Enterprise Media Phone for Android VoIP Phone and Device 480x272 pixel capacitive touch screen TFT LCD 6 lines with up to 6 SIP accounts, up to 5-way conference, phonebook with up to 1000 contacts, call history with up to 500 records Support Android Operating System 2.3 and the vast number of 3rd party Android applications (including Skype, Google Voice, Microsoft Lync Client, YouTube, Facebook, Twitter, Pandora, Angry Birds, and more) HD wideband audio, superb full-duplex hands-free speakerphone with advanced acoustic echo cancellation and excellent double-talk performance Automated provisioning using TR-069 or AES encrypted XML configuration file, TLS/SRTP/HTTPS for advanced security and privacy protection