Grandstream GAC2500 Android Enterprise Conference Phone

Grandstream GAC2500 Android Enterprise Conference Phone

Frequently Asked Questions

First, double-check that the SIP account credentials (username, password, and server address) are entered correctly in the phone's settings under Accounts. Also confirm that your network allows outbound SIP traffic on ports 5060 or 5061—some office firewalls block these. If the issue persists, a Toronto-based VoIP support provider can usually resolve this remotely.
Make sure the Ethernet cable is securely connected to a PoE+ switch or injector that supports IEEE 802.3at Class 4. If you're using the optional power adapter, verify it's plugged into a working outlet. Try a different cable or port to rule out a faulty connection.
Go to Settings > Bluetooth on the touchscreen and ensure Bluetooth is enabled. Put your headset in pairing mode, then select it from the list of available devices. If it doesn't appear, try moving the headset closer to the phone and ensure it's not already connected to another device.
Choppy audio is often caused by network congestion or high latency. Check that the phone is connected to a wired Gigabit port rather than Wi-Fi, and run a speed test from the phone's browser to confirm your internet connection is stable. If the problem continues, try reducing the number of active calls or streaming on your network.
Yes, the GAC2500 is a SIP-based conference phone and will work with any Canadian carrier that provides SIP trunking, including Rogers, Bell, and Telus. You'll need to configure the SIP account settings provided by your carrier. For hosted PBX services, check that your provider supports Android-based endpoints.
First, clean the screen with a soft, dry cloth to remove any dirt or moisture. If that doesn't help, power cycle the phone by unplugging it for 30 seconds and plugging it back in. If the issue persists, the screen may need calibration or replacement—contact your support provider for further diagnosis.
During an active call, tap the Conference button on the touchscreen, then dial the next participant. Once they answer, tap Conference again to merge them into the call. Repeat for up to 7 participants total. Make sure all participants are on separate SIP lines or accounts if needed.
Check that the phone's volume is turned up using the side buttons or on-screen slider. Also ensure the mute button is not active (the mute icon should not be highlighted). If you're using a headset, verify it's properly paired and selected as the audio output in the phone's settings.
Go to Settings > About Phone > System Updates and check for updates. If an update is available, follow the on-screen prompts to install it. Make sure the phone is connected to a stable network during the update. For manual updates, you can download the firmware from Grandstream's support site and upload it via the phone's web interface.
Call drops are often related to network instability or SIP registration timeouts. Verify that your router or firewall is not set to drop idle SIP connections—some firewalls have a UDP timeout that can cause this. Also check that the phone's SIP registration interval (under Account settings) matches your provider's recommended value.
VoIP Conference Phones

Grandstream GAC2500 Android Enterprise Conference Phone

*The Grandstream GAC2500 is an Android-based business conference phone that redefines flexibility, mobility, and choices in the workplace. It supports up to 6 lines and 6 SIP accounts, allowing businesses to easily hold conferences and manage multiple calls at once. Key features include: • Runs Android 4.4 and offers access to the Google Play Store for customizable conferencing experiences • Bluetooth support for syncing headsets and mobile devices • Built-in 7-way conference bridge for seamless collaboration • 4.3″ capacitive touch screen with easy-to-use interface • Auto-sensing Gigabit port, built-in PoE support, and full HD audio for high-quality voice calls • Daisy-chain support to combine two phones together for more flexibility • TLS and SRTP security encryption for secure connections Additional features include: • Weight: 4.8 lbs • Dimensions: 16 × 13 × 4 in • Brand: Grandstream • Phone Type: Conference Technical specifications: • Network Interface: Auto-sensing Gigabit Ethernet port with integrated PoE+ (IEEE 802.3at Class4) • Graphic Display: 4.3” IPS LCD with 800×480 resolution • Mic: 3 cardioid microphones; 12 ft. pickup distance, 360° capture • Speakerphone: Frequency: 220-18,000 Hz, Volume: Up to 86 dB at 0.5 meter, Audio full duplex • 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 For a full list of specifications, please refer to the product datasheet.

About This Product

The Grandstream GAC2500 is an Android-based conference phone designed for meeting rooms and huddle spaces where flexibility and app integration matter. It runs Android 4.4 and gives you access to the Google Play Store, so you can install third-party collaboration apps like Zoom, Microsoft Teams, or your own custom UC client directly on the device. This makes it a good fit for businesses that want a single device for both SIP telephony and softphone-style conferencing, without needing a separate PC or tablet in the room.

It supports up to 6 SIP accounts and includes a built-in 7-way audio conference bridge, which is practical for small to mid-sized teams that run frequent internal calls or client meetings. The 4.3-inch touchscreen and Bluetooth support for headsets or mobile syncing add convenience, but the device is best suited for rooms where participants sit within about 12 feet of the unit—its three cardioid microphones cover 360 degrees but won't fill a large boardroom. For bigger spaces, you might need to daisy-chain two units or look at a ceiling-mic array system.

On the networking side, the GAC2500 has a Gigabit port with PoE+ support, so it can be powered over Ethernet without a separate power brick—handy for clean desk setups. It also includes TLS and SRTP encryption, which is important for Canadian businesses handling sensitive client data. However, note that it runs an older Android version (4.4), so some newer apps may not be compatible or may lack security updates. If your organization requires the latest Android security patches or needs to run modern UC apps that demand a newer OS, this device may feel limited. It's a solid choice for a dedicated conference room phone that doubles as an Android endpoint, but not for environments that need cutting-edge app support or very large room coverage.
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