Grandstream GAC2500 Android Conference Phone, 4.3 in Touch Screen, 6 Lines

Overview

The Grandstream GAC2500 is a tabletop conference phone that lets a whole room join a call through one speakerphone. It runs Android 4.4, so it can run conferencing apps as well as make normal calls through your phone system, and its 4.3 inch touch screen is used to dial, join and manage calls. It suits small and medium meeting rooms and huddle spaces.

Is it right for you?

• Suits small and medium meeting rooms and huddle spaces where people sit within about 3.7 m (12 ft) of the phone.
• For a larger room, two GAC2500 units can be daisy-chained to extend pickup.
• It needs a Session Initiation Protocol (SIP) call server: a phone system (IP PBX) such as a Grandstream UCM, or a hosted internet calling (VoIP) service.
• The platform is Android 4.4, so check that any third-party app you plan to run still supports that version. The newer GAC2570 runs Android 10, has 12 microphones, Wi-Fi 6 and a battery.
• It is an audio conference phone, not a video system.

Key features

• 6 SIP accounts and 6 lines, with a built-in 7-way voice conference bridge, so it can host a call for several outside parties without the phone system doing the mixing.
• 3 cardioid microphones with 360 degree pickup, about 3.7 m (12 ft) range.
• Full-duplex HD (high-definition) speakerphone, up to 86 dB at 0.5 m, so both sides can talk at once without clipping.
• 4.3 inch (800 x 480) IPS capacitive touch screen.
• Gigabit Ethernet with integrated Power over Ethernet (PoE+, 802.3at Class 4), 802.11b/g/n Wi-Fi and Bluetooth 4.0.
• RJ48 daisy-chain port to combine two units in a larger room, plus a 3.5 mm audio port and USB Micro-B.
• Codecs G.711µ/a, G.722, G.726, iLBC, Opus and G.729A/B.
• Operating temperature 0 to 40 °C, so it is for indoor rooms.

What else you need

• A SIP call server: a Grandstream UCM IP PBX or another standard SIP server, or a hosted VoIP service.
• Power from an 802.3at PoE+ switch port, or from the universal power adapter that comes in the box (100 to 240 V AC input, 12 V DC 2 A output) and a mains socket.
• A network cable to the table, or a Wi-Fi network if you connect wirelessly.
• Only if you want to cover a larger room: a second GAC2500 linked with the RJ48 cascade cable that comes in the box.

Installation

Place the unit centrally on the table so that everyone sits within the microphones’ pickup range. Connect it to the network by cable or Wi-Fi and register it to the call server, which a telephony installer or IT team can do by hand or through provisioning. Two units in a long room are linked with the RJ48 cascade cable.

Software and licences

Works with standard SIP servers and Grandstream UCM IP PBXs, supports LDAP phonebooks, and can be provisioned by TR-069 or AES-encrypted XML files. Android apps run on the Android 4.4 platform.

Before you buy

• Android 4.4 is an older platform; confirm app support before relying on third-party apps.
• A universal power adapter (12 V DC 2 A) and an RJ48 cascade cable come in the box.
• Weight 1.34 kg, size 280 x 285 x 60 mm.