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Extension Module to Grandstream’s GRP2615, GRP2624, GRP2650, GRP2670 Carrier-Grade IP Phone and GXV3450 IP Video Phone.
- 4.3 Inch Color LCD Display With 272 x 480 Pixel Resolution
- Supports up to 160 Lines Using Four Modules Connected in Series
- Advanced Call Features Including BLF, Presence, and Intercom
- Voice Conference Calling and Call Transfer/Forwarding Capabilities
- Local GUI Animation Managed Directly From the Host Phone
- Model:GBX-20
- Brand:GRANDSTREAM
- Warranty:3 years with Epcom
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