The Poly VVX EM50 is an enterprise-grade console expansion module designed to scale the call-handling capacity of the Poly VVX 450 Business IP Phone. It serves as a dedicated hardware upgrade for high-volume call operators executive assistants and receptionists who require real-time visibility and rapid routing capabilities across an organization. 

High-Resolution Display Integrated 5.0-inch 480 x 800 pixel backlit colour LCD screen. The digital display eliminates paper insert labelling and auto-populates directory data directly from the host phone.
Programmable Key Matrix Features 30 physical line keys configurable across 3 pages providing access to a maximum of 90 programmable functions per module such as line registrations speed dials or direct station selection.
Dual-Colour Status Indicators Each key features an integrated bi-colour red/green LED. This provides immediate visual feedback for Busy Lamp Field BLF monitoring active calls ringing lines or parked sessions.
Plug-and-Play Connectivity Connects directly via the host phones USB port for seamless data transfer and configuration sync. No secondary network provisioning is required.
Bus-Powered Architecture A single EM50 module runs entirely on the host phones power supply via PoE or standard AC adapter.
Daisy-Chain Expansion For ultra-high volume routing environments up to two EM50 modules can be connected to a single VVX 450 phone.
Operational Efficiency Minimizes dropped calls and reduces routing latency by providing single-button transfers parking and speed dials.
Presence Monitoring Empowers administrative staff to track real-time extension availability across the office floor preventing blind transfer errors.
Maximizes Hardware Investment Extends the lifecycle and capability of standard VVX 450 desktop units transforming them into full-scale attendant consoles without requiring a complete hardware overhaul. 

Note A dual-module deployment requires an external proprietary AC power supply connected to the host phone.