| Technical Specifications – Grandstream GBX20 Extension Module | |
|---|---|
| Display | 4.3" (272 × 480) color TFT LCD |
| Extension Keys | 20 programmable keys with dual-color LEDs |
| Virtual Keys | Up to 40 programmable contacts using page switching |
| Page Keys | 2 page navigation keys |
| Supported Features | BLF, Speed Dial, Call Park, Presence, Call Pickup, Busy Lamp Field |
| Daisy Chain Support | Up to 4 GBX20 modules connected to one compatible phone |
| Compatibility | GRP2615, GRP2624, GRP2650, GXV3350, GXV3450 |
| Power Supply | Powered by host phone (no external power required) |
| USB Interface | USB connection to host phone |
| Stand | Adjustable stand included |
| Wall Mount | Supported |
| Dimensions | 206 × 117 × 32 mm |
| Weight | 0.38 kg |
| Operating Temperature | 0°C to 40°C |
| Storage Temperature | -10°C to 60°C |
| Operating Humidity | 10% to 90% (non-condensing) |
| Technical Specifications – Grandstream GBX20 Extension Module | |
|---|---|
| Display | 4.3" (272 × 480) color TFT LCD |
| Extension Keys | 20 programmable keys with dual-color LEDs |
| Virtual Keys | Up to 40 programmable contacts using page switching |
| Page Keys | 2 page navigation keys |
| Supported Features | BLF, Speed Dial, Call Park, Presence, Call Pickup, Busy Lamp Field |
| Daisy Chain Support | Up to 4 GBX20 modules connected to one compatible phone |
| Compatibility | GRP2615, GRP2624, GRP2650, GXV3350, GXV3450 |
| Power Supply | Powered by host phone (no external power required) |
| USB Interface | USB connection to host phone |
| Stand | Adjustable stand included |
| Wall Mount | Supported |
| Dimensions | 206 × 117 × 32 mm |
| Weight | 0.38 kg |
| Operating Temperature | 0°C to 40°C |
| Storage Temperature | -10°C to 60°C |
| Operating Humidity | 10% to 90% (non-condensing) |