Grandstream - GXP2020/GXP2120 IP Phone Expansion Module

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The GXP2020/2120EXT delivers additional functionality, versatility and flexibility to Grandstream’s GXP2020/2010/2110/2120 enterprise IP phone series. The GXP2020/2120EXT module features 56 programmable buttons (each with dual color LED) and up to 112 programmable buttons when two extension modules are daisy chained together.

Grandstream - GXP2020/GXP2120 IP Phone Expansion Module

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Phone Overview

The GXP2020/2120EXT module is connected to and controlled by the GXP2020 or GXP2120 with a short connector cable, providing the benefits of the additional keys instantly. Power and signaling are provided by the host phone. The GXP2020/2120EXT supports the traditional call features on each of its programmable buttons, including BLF (busy lamp field), conference/call transfer/forward/pick up.

The GXP2020/2120EXT is the ideal solution for offices that manage high call volumes or an office receptionist. By using the GXP2020EXT the telephone attendant can ensure maximum office productivity by efficiently monitoring and dispatching multiple incoming calls.

Features & Benefits

  • 56 programmable buttons per module
  • Busy Lamp Field (BLF)
  • Busy Line Answer (BLA)
  • Speed dial for each line
  • Daisy-chain 2 modules for 112 programmable buttons
  • Conference/call transfer/forward/pickup

Feature Specifications


56 up to 112 with 2 daisy chained GXP2020/2120EXT modules


The GXP2020/2120EXT is the extension module that can be added to the GXP2020/2010/2110/2120 enterprise IP phone series.

Feature Support     

Local feature-rich GUI with animation driven from the host  GXP2020/2120  phone;
Multiple line/call appearances.

Firmware Upgrades     

Delivered by host phone.  Host phone must support firmware or higher versions

Cost-effective IP Solution     

Small to Medium enterprise office IP Phone

Please Note:
 - This product only includes the Grandstream GXP2020/2120EXT Expansion Module

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