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Grandstream GBX20 EXT Extension Module for GXV3350 and GRP2615 IP Phones
Key Features
Brand: Grandstream
4.3 inch TFT color LCD screen
20 lines per page (each module contains 2 pages, for up to 40 lines per module)
Combine up-to 4 daisy-chained modules for 160 contacts/extensions
BLF, call park /pick-up, speed-dial, presence, intercom, voice conferencing transfer/forward
1 Year Warranty
Grandstream GBX20 EXT Extension Module Review and Specifications
The Grandstream GBX20 EXT is a reliable enterprise grade expansion module designed for high volume call environments, executives, and receptionists. It delivers professional grade communication features in an intuitive, easy to use package. This comprehensive guide covers everything you need to know about its features, benefits, and technical specifications.
As a highly efficient desktop device, this extension module streamlines daily operations by providing essential attendant console functionality without unnecessary complexity. It serves as a dependable communication hub for startups, remote workers, and busy office environments alike. The sleek design fits perfectly into modern workspaces while maintaining a familiar layout that requires zero learning curve for users transitioning from traditional analog hardware. Powered directly by the host phone, it eliminates the need for external power adapters and minimizes cable clutter on work desks. Furthermore, it features a large backlit graphic display for clear visibility, supports compatibility with premium models like the GXV3350 and GRP2615, and includes 20 physical, dual color programmable keys with 2 page switching buttons to easily monitor extension status and speed dial contacts.
Key Features
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- 20 Programmable Keys: 20 physical keys per module with dual color LEDs for rapid status tracking.
- Dual Page Switching: Two dedicated page keys allow management of up to 40 extensions per module.
- Color Display: Large 4.3 inch backlit LCD screen for continuous visual tracking of contact labels.
- Daisy Chain Support: Connect up to 4 modules to a single host phone to monitor up to 160 contacts simultaneously.
- Host Compatibility: Designed to integrate seamlessly with the GXV3350 and GRP2615 IP phones.
- Rich Telephony Functions: Supports advanced call handling including Busy Lamp Field, Speed Dial, and Call Park.
- Direct Powering: Draws power smoothly from the connected host device without extra external power plugs
Benefits for Small Businesses
Enhanced Call Quality
The module utilizes advanced hardware pathways to ensure line status signaling remains instantaneous and professional. This ensures that every transfer and call route operation is crisp, clear, and efficient.Â
Cost Effective Deployment
The system allows you to expand your receptionist desk capability using the existing network drop of the host phone. This eliminates the need for extra cabling and reduces network port infrastructure installation costs.
Simple User Interface
The layout includes 20 dual color keys alongside an automated digital label system. Users can navigate extension listings quickly, speeding up daily communication and switchboard routing tasks.
Technical Specifications
| Feature | Specification |
|---|---|
| Graphic Display | 4.3 inch 272 x 480 backlit LCD color display |
| Feature Keys | 20 physical keys with dual color LEDs, 2 page switching keys |
| Power Consumption | Powered entirely by the host phone device |
| Firmware Upgrade | Driven automatically by the firmware of the host phone |
| Daisy Chain Capability | Up to 4 modules can be connected together in sequence |
| Host Phone Compatibility | Works seamlessly with GXV3350 and GRP2615 models |
| Telephony Features | Busy Lamp Field, speed dial, call transfer, call forward, call pickup |
| Dimensions | 210mm x 124mm x 45mm footprint size |
| Weight | 0.45 kilograms hardware weight |
Installation and Provisioning
Setting up this device is straightforward for IT administrators. It connects directly to the host phone side slot via a secure bracket link and standard connection cable. Configuration options are managed directly through the host phone web user interface, allowing automated provisioning via encrypted XML configuration files or zero configuration deployment via Grandstream UCM series IP PBX appliances
