DECT telephone Grandstream GXP1628 — DECT desk/wall phone, LCD 132x48 px, speakerphone, 500 contacts, RJ‑9 headset

The Grandstream GXP1628 is a Gigabit IP phone for small businesses that supports 2 SIP accounts and offers a 132x48 backlit LCD for clear display. Linux-based and designed for everyday office use, the GXP1628 includes 8 dual-colored BLF/speed-dial keys, integrated PoE and dual Gigabit ports to ensure reliable connectivity and power over a single cable.

Advantages

The GXP1628 provides HD audio on both handset and speakerphone, 3-way conferencing and 3 XML programmable soft keys for customization. Eight BLF keys let users monitor presence and transfer calls quickly, while EHS support enables compatibility with Plantronics headsets. Built-in security uses SRTP and TLS and the phone supports automated provisioning including zero-config with Grandstream UCM PBXs, encrypted XML and TR-069 for simplified mass deployment.

Key specifications

• 2 SIP accounts and 2 line keys
• 3-way conferencing
• 3 XML programmable context-sensitive soft keys
• HD audio on speakerphone and handset
• Dual-switched Gigabit Ethernet ports
• Integrated Power over Ethernet (PoE)
• 8 dual-colored BLF / speed-dial keys
• EHS support for Plantronics headsets
• 132 x 48 backlit LCD display
• Up to 500 contacts; call history up to 200 records

How to use

Connect the phone to the network using the Gigabit LAN port and, if available, power it via PoE to avoid a separate power adapter. Configure accounts through the web GUI, provisioning server or use zero-configuration with a Grandstream UCM PBX for automatic setup. Program BLF keys and soft keys via the phone interface or web portal, pair a compatible Plantronics headset using the EHS feature, and verify audio and network settings before regular operation.

Recommendations

For deployments, use the integrated provisioning options (UCM zero-config, encrypted XML or TR-069) to streamline mass installation. Use PoE-enabled switches to reduce cabling and enable reliable power, and keep firmware up to date to maintain security (SRTP/TLS) and feature compatibility.