Grandstream GAC2500 Conference IP Phone

Android Business Conference Phone




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Android based IP conference phone that will redefine the choices, flexibility and mobility in any workplace. 7 way conference bridge that offers full access to the Google Play Store in order to hold conferences through Skype, Google Hangouts and more.


  • Runs Android 4.4
  • 4.3" 800x480 Capacitive Touch Screen
  • 7 Way Conferencing

A Revolutionary IP Conference Phone

The GAC2500 is an Android-based Business Conference Phone that will redefine the choices, flexibility and mobility available in any workplace. It supports up to 6 lines and 6 SIP accounts, as well as provides full access to the Google Play Store and apps such as Skype, Google Hangouts and more. This Business Conference Phone offers a variety of mobility options by supporting Bluetooth for audio pairing and data syncing with mobile devices, and WiFi for wireless calling/conferencing in any location. A 7-way conference bridge allows the GAC2500 to easily create and hold a conference at any time and the 4.3” touch screen with familiar Android interface offers easy use. This IP Conference Phone also offers daisy chain support. By combining all of these features, the GAC2500 offers a foundation that gives any business the choice and flexibility to customize their conference phone based on their communication needs. 

Key Features and Benefits

  • Runs Android 4.4
  • Gigabit Ethernet
  • Built in Bluetooth
  • PoE Support
  • Wi-Fi Support
  • Up to 6 SIP Accounts
  • 7 Way Conferencing
  • HD Audio
  • 4.3" 800x480 Capacitive Touch Screen
  • TLS and SRTP Security Excryption Technology to Protect Calls and Accounts

Grandstream has been connecting the world since 2002. The company is consistently recognised within the industry for quality, innovation and product value. Grandstream is focused on research and development, and consistently drives the market forward with new and innovative IP products.

Grandstream products are used by some of the largest businesses and service providers in the world. Among other IP based products, the range includes Desk IP Phones, Wireless DECT Phones, HD Video Systems and Conference Phones.

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  • SIP RFC3261, TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP, ICMP, DNS (A record, SRV, NAPTR), DHCP, PPPoE, SSH, TFTP, NTP, STUN, SIMPLE, LLDP, LDAP, TR-069, 802.1x, TLS, SRTP, IPV6 (pending), OpenVPN (pending)

Network Interface

  • Auto-sensing Gigabit Ethernet port with integrated PoE+ (IEEE 802.3at Class4)

Graphic Display

  • 4.3” IPS LCD with 800x480 resolution Mic 3 cardioid microphones; 12 ft. pickup distance Speakerphone Frequency: 220-18,000 Hz Volume: Up to 86 dB at 0.5 meter Audio full duplex


  • Yes, integrated. Bluetooth 4.0


  • Yes, integrated
  • 802.11 b/g/n

Auxiliary Ports

  • 3.5mm audio port
  • USB Micro-B
  • RJ48 daisy chain port

Voice Codecs Support

  • for G.711µ/a, G.722, G.726, iLBC, Opus, G.722.1 and G.722.1c (pending), in-band and out-of-band DTMF (In audio, RFC2833, SIP INFO), G.729A/B, VAD, CNG, AEC, PLC, AJB, AGC

Telephony Features

  • 6 SIP accounts
  • hold, transfer, forward
  • 7-way conference
  • call park, call pickup
  • downloadable phonebook (XML, LDAP, up to 2000 items)
  • call waiting
  • call log (up to 2000 records)
  • XML customization of screen
  • auto answer
  • click-to-dial
  • flexible dial plan
  • hot desking
  • personalized music ringtones and music on hold
  • server redundancy and fail-over

Sample Applications

  • Skype
  • Google Hangouts
  • Skype for Business (Lync)
  • Web browser
  • Adobe Flash
  • Facebook
  • Twitter
  • YouTube
  • Google calendar
  • mobile phone data import/export via Bluetooth
  • API/SDK available for advanced custom application development

HD Audio

Yes, speakerphone with support for wideband audio


  • Layer 2 QoS (802.1Q, 802.1p) and Layer 3 (ToS, DiffServ, MPLS) QoS.


  • User and administrator level passwords
  • MD5 and MD5-sess based authentication
  • 256-bit AES encrypted configuration file
  • TLS
  • SRTP
  • 802.1x media access control


  • English, German, Italian, French, Spanish, Portuguese, Russian, Croatian, Chinese, Korean, Japanese, and more


  • Firmware upgrade via TFTP / HTTP / HTTPS or local HTTP upload
  • mass provisioning using TR-069 or AES encrypted XML configuration file

Power & Green Energy Efficiency

  • Universal Power Supply:Input:100-240VAC 50-60Hz; Output:12VDC,2A (24W)


  • Unit dimension:280mm(W) x 285mm(L) x 60mm(H) Unit weight:1.34kg; Package weight: 2.35kg

Temperature and Humidity

  • Operation: 0°C to 40°C Storage: -10°C to 60°C Humidity: 10% to 90% Non-condensing

Package Content

  • GAC2500 phone
  • universal power supply
  • network cable
  • USB cable
  • RJ48 cascade cable
  • Quick Installation Guide


  • FCC: Part 15 (CFR 47) Class B; UL 60950 (power adapter) CE : EN55022 Class B, EN55024, EN61000-3-2, EN61000-3-3, EN60950-1, EN62479, RoHS RCM: AS/ACIF S004; AS/NZS CISPR22/24; AS/NZS 60950; AS/NZS 4268
Brand Grandstream IP Phones

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