Polycom Vvx Color Expansion Module
#1 | Compatibe with VVX 300 VVX 310 VVX 400 VVX 410 VVX 500 and VVX 600 |
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#2 | 28 multifunctional line keys configurable as line registration call appearance speed dial DSS or BLF |
#3 | Dual color illuminated LEDs for line status information |
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