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Grandstream's Conferencing Phones will transform your conferencing experience by offering features and flexibility not found in other conferencing devices.


  • Capacitive touch mute button with LED
  • 1500mA built-in Li-Ion battery
  • Micro-B port for charging, BYOD microphone and upgrading
  • Low power indicator
  • Bluetooth v2.1+EDR protocols
  • Proprietary 2.4GHz wireless technology with dynamic beamforming technology
  • Ultrasound pairing technology
  • High quality audio coding with error tolerance
  • Built-in 8 omni-directional MEMS with 5-meter pickup range

  • 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 WiFi 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