Grandstream GBX20 Extension Module
NEW Item
Manufacturer Part Number: GBX20
Grandstream GBX20 LCD Extension Module – Professional BLF Sidecar Attendant Console with 4.3-Inch Color Screen for GRP and GXV Phones / Up to 40 Programmable Keys (Model: GBX20)
The Grandstream GBX20 is a highly sophisticated, backlit LCD extension module engineered specifically to optimize workflow efficiency at high-volume reception, clerical, and administrative desks. Operating as a powerful sidecar terminal, it extends the operational capacity of compatible Grandstream Carrier-Grade IP phones (GRP2615 / GRP2624 / GRP2650 / GRP2670) and IP Video Phones (GXV3350 / GXV3450). It provides office administrators, receptionists, and call dispatchers with an instantly scannable overview to manage dense enterprise voice traffic.
The graphic engine of the GBX20 is built upon an expansive 4.3-inch (10.9 cm) TFT color LCD screen displaying a crisp 272 x 480 pixel resolution, which maximizes data scannability for contact names, extensions, and system status flags. Outfitted with 20 physical buttons paired with dual-color LEDs, the module uses integrated electronic page switching to support up to 40 programmable functions per unit. Users can map these keys to manage dynamic workplace features such as Busy Lamp Fields (BLF), Speed Dials, Call Parking, Call Forwarding, Presence indicators, and Intercom links. For massive enterprise communications centers, up to 4 GBX20 sidecars can be daisy-chained to a single host telephone, unlocking up to 160 independent programmable shortcuts.
Key Features and Benefits
- Expansive TFT Color Layout: The 4.3-inch high-resolution graphic screen provides a modern corporate user interface, making extensive contact lists quick and easy to navigate.
- Substantial Multi-Purpose Matrix: Features 20 physical keys with dual-color LEDs, scaling to 40 digital call paths via dual dedicated page-navigation buttons.
- Versatile Feature Allocation: Programs effortlessly to handle enterprise-level demands including BLF tracking, speed dialing, call holding, call parking, call pickup, and transfers.
- Scalable Daisy-Chain Topography: Allows up to 4 modules to link concurrently, building an authoritative attendant console to oversee up to 160 distinct line indicators.
- Adaptive Power Routing: A single GBX20 node draws power directly from the master telephone host architecture / layouts utilizing 2 or more sidecars utilize the included external power supply.
- Centralized Asset Management: Key properties and macros are configured directly via the host phone's web UI or deployed across networks using the cloud-based Grandstream Device Management System (GDMS).
- Ergonomic Matching Stand: Reversible desk mount stand coordinates perfectly with the host phone's profile, maintaining clean sightlines on executive desktops.
Technical Specifications
- Manufacturer: Grandstream
- Product Name: Grandstream GBX20 Extension Module
- Display Profile: 4.3-inch (10.9 cm) TFT color LCD display with a resolution of 272 x 480 pixels
- Key Infrastructure: 20 physical buttons per module with dual-color status LEDs (up to 40 positions via page switching)
- Compatible Host Frameworks: Grandstream GRP2615, GRP2624, GRP2650, GRP2670, GXV3350, and GXV3450
- Kaskading Capacity: Up to 4 modules connected in series (Daisy-Chain deployment)
- Port Array: Extension Input port (RJ45 link from host telephone) / Extension Output port (RJ45 pass link to next GBX20 node)
- Power Options: 1x Module: Power delivered via host telephone (PoE or phone AC line) / 2 or more Modules: Driven by the included external 12V / 1.0A power supply unit
- Programmable Features: BLF, Call Park, Speed Dial, Presence, Call Forward, Transfer, Hold, Intercom, Call Pickup, and more
- Firmware Maintenance: Automated background upgrades pushed directly from the master host telephone terminal
- Mechanical Mounting: Reversible base plate offering 2 distinct workspace angles, separate vertical wall mounting supported
- Physical Footprint: 210 mm (L) x 124 mm (W) x 33.5 mm (H)
- Weight Profile: Sidecar Node Only: 360 g / Gross Boxed Weight: ca. 700 g
- Condition: Brand New / Genuine
Package Contents
- 1x Grandstream GBX20 Extension Module Console
- 1x Multi-angle adjustable desk base stand
- 1x RJ45-to-RJ45 data link connecting cable
- 1x Metal connector reinforcement plate with installation screws
- 1x Universal 12V / 1.0A Power Supply Adapter (EU Plug)
- 1x Quick Start Installation Guide
