The Grandstream GRP2650 is a carrier-grade, professional 14-line IP phone designed for high-volume deployment in enterprises, service providers, and other large-scale settings.
It is built to support zero-touch provisioning (for large-scale deployments), strong security features, and advanced telephony capabilities while maintaining a user-friendly interface.
In terms of usability, it features a 5-inch color display, support for Bluetooth, Wi-Fi, EHS (Electronic Hook Switch) headsets, and USB headsets, as well as robust hardware and firmware architecture to protect against tampering or corruption.
The GRP2650 is part of Grandstream’s “GRP” series of professional IP phones designed to provide scalable, secure, and manageable endpoints for telecom operators and large organizations.
Here are the major features of the GRP2650:
| Feature | Description / Benefit |
|---|---|
| Lines & SIP Accounts | Supports 14 lines (i.e., 14 line keys) and up to 16 SIP accounts (depending on firmware version) |
| Multi-Purpose Keys (MPKs) / Virtual MPKs (VPKs) | 56 virtual multi-purpose keys (expandable) for programmable features, BLF, speed dials, etc. |
| Display | 5-inch color LCD (resolution 1280×720) for UI, directory, features, etc. |
| Audio / Voice Quality | Full-duplex speakerphone; HD audio in handset and speaker; noise shield / noise suppression to minimize background interference |
| Conferencing | 5-way voice conferencing (i.e. up to 5 participants) |
| Headset / EHS / USB | RJ9 headset jack supporting EHS (Plantronics), USB headset integration, and Bluetooth headset support |
| Wi-Fi / Wireless | Built-in dual-band Wi-Fi (2.4 GHz and 5 GHz) – supports Wi-Fi 6 (802.11 ax) (on hardware v5.0+) |
| Ethernet / PoE | Dual Gigabit Ethernet ports (10/100/1000 Mbps, auto-sensing), with integrated Power over Ethernet (PoE) support |
| Security / Firmware Redundancy | Secure boot, dual firmware image support, encrypted data storage, tamper-resistant design |
| Zero-Touch Provisioning / Management | Compatible with Grandstream’s Device Management System (GDMS) for centralized provisioning, configuration, monitoring, and firmware updates |
| Swappable Faceplate / Branding | The faceplate is swappable, so service providers or organizations can add logos or customize branding |
| Scalability / Extension Module Support | The GRP series supports extension modules (e.g. GBX20) to expand the number of programmable keys (contacts) |
Below is a more detailed spec breakdown:
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