Grandstream
Grandstream Color extension module for IP phones, access points or compatible devices.
| Type | Color extension module |
| Short description | Grandstream Color extension module for IP phones, access points or compatible devices. |
| Details | 4.3-inch color screen, 20 keys per page, up to 4 modules |
| Use case | Key expansion for compatible Grandstream IP phones. |
| Functions | BLF keys, speed dial, transfer, line monitoring and shortcuts. |
| Display | Dedicated display for key labels and contact pages depending on model. |
| Compatibility | Compatible with selected GXP/GRP series depending on module and firmware. |
| Deployment | Useful for reception, team monitoring, switchboards and call centers. |
| Highlights | Quickly increases programmable keys without changing phone. |
| Ecosystem | Compatible with the Grandstream ecosystem: UCM, GDMS, GWN or SIP endpoints depending on family. |
| Reference source | Official Grandstream page and 2026 product brochure. |
| Brand | Grandstream Networks |
| Commercial status | Product or series listed in Grandstream 2026 commercial sources. |