Two SIP lines, a 2.4-inch color LCD, gigabit pass-through ethernet, and the same auto-provisioning the rest of the GRP line uses. The GRP2602 takes the GRP2601 chassis and swaps in a color screen — the cheapest way to put something that does not look obviously bargain-bin on every desk.
The GRP2602 is exactly the same phone as the GRP2601, give or take a color LCD instead of a monochrome one. Same two SIP lines, same dual 10/100 ethernet, same PoE class 1, same handset, same Opus codec, same provisioning files. The screen upgrade is the only meaningful difference — and it is worth the extra $10 for almost any deployment that is not literally hidden in a closet.
Where it actually earns the upgrade: the GRP2602W variant adds built-in Wi-Fi, which means you can put this phone in a conference room, a satellite office, a back-of-warehouse spot — anywhere ethernet is a hassle to pull — without committing to a $150 phone just to get Wi-Fi. We sell the GRP2602W roughly twice as often as the wired GRP2602; if you have any chance of needing Wi-Fi on a single unit in your fleet later, just spec the W variant up front.
Where it does not make sense: any desk where someone needs to monitor coworker line status (only 2 hard keys, both consumed by your SIP lines), any desk that needs Bluetooth, or any deployment where the user is going to spend real screen time on the phone. The 2.4-inch screen is fine for caller ID and a name; it is not great for browsing a 200-person directory. For that, the GRP2612 is the next stop.
| Display & user interface | |
| Display | 2.4-inch 320×240 color TFT LCD |
| Line keys | 2 SIP line keys with dual-color LEDs |
| Soft keys | 3 context-sensitive XML soft keys |
| Navigation | 5-way navigation cluster, dedicated hold / transfer / mute / message keys |
| VoIP & SIP | |
| SIP accounts | 2 SIP accounts, 2 lines |
| Protocols | SIP RFC3261, NAT (STUN), TLS, SRTP, BLF, SCA |
| Codecs | Opus, G.722, G.711a/u, G.726, G.729A/B, iLBC |
| Provisioning | TR-069, XML (HTTP/HTTPS/TFTP/FTP), GDMS cloud management |
| Audio | |
| HD voice | HD handset and HD speakerphone |
| Speaker | Full-duplex hands-free with AEC |
| Headset | RJ9 wired headset port |
| Connectivity | |
| Ethernet | Dual 10/100 Mbps (LAN + PC pass-through) |
| PoE | IEEE 802.3af Class 1 |
| Wi-Fi | Optional on GRP2602W variant (2.4 GHz dual-band) |
| Bluetooth | Not supported |
| Physical | |
| Dimensions | 201 × 184 × 67 mm |
| Weight | Approximately 0.7 kg |
| Wall mount | Yes, integrated bracket |
| In the box (from voip.army) | |
| Included | GRP2602 handset, base, curl cord, ethernet cable, stand, provisioning card |
| Not included | Power adapter (PoE preferred) |
Plug the GRP2602 into PoE and ethernet. About a minute later it has registered to your extension. Same auto-provisioning flow as every other supported phone — no SIP credentials to type, no firmware to chase.
Boot, fetch config from our provisioning server, register, ready. About one minute on a normal connection.
2 lines per phone. Each line key has a dual-color LED for status at a glance.
4 line keys + 3 XML soft keys mapped from the voip.army portal — BLF, paging, parking, transfer destinations.
Bringing your own? Send the MAC, factory-reset, plug in. No charge to add it to the fleet.
Standard PoE — any 802.3af-compliant switch from the last 15 years powers the phone without an adapter.
Provisioning template tested against every Grandstream firmware release for GRP2602. We catch regressions before they reach your fleet.
Tell us how many you need and what extensions to map. We ship pre-configured next business day; you plug them in and they work.