Compatibe with VVX 300, VVX 310, VVX 400, VVX 410, VVX 500, and VVX 600 28 multifunctional line keys configurable as line registration, call appearance, speed dial, DSS, or BLF Dualcolor illuminated LEDs for line status information 3 page keys in total for additional line appearances Expandable up to three VVX Expansion Modules per phone

• Compatibe with VVX 300, VVX 310, VVX 400, VVX 410, VVX 500, and VVX 600 28 multifunctional line keys configurable as line registration, call appearance, speed dial, DSS, or BLF Dualcolor illuminated LEDs for line status information 3 page keys in total for additional line appearances Expandable up to three VVX Expansion Modules per phone
• VVX Color Expansion Module
• Dimensions: 11.00x6.00x3.50
• Item Weight: 1.80
• 100% Satisfaction

Compatibe with VVX 300, VVX 310, VVX 400, VVX 410, VVX 500, and VVX 600 28 multifunctional line keys configurable as line registration, call appearance, speed dial, DSS, or BLF Dualcolor illuminated LEDs for line status information 3 page keys in total for additional line appearances Expandable up to three VVX Expansion Modules per phonePolycom, Inc.