VVX Expansion Module (Paper directory) for VVX 300, 310, 400, 410, 500 and 600. Includes AUX cable and attachment hardware. The Polycom VVX Expansion Module is an optimal solution for telephone attendants, receptionists, administrative assistants, secretaries, and other “power users” who manage multiple simultaneous telephone calls on a daily basis. The Polycom VVX Expansion Module extends the functionality of the Polycom VVX Business Media Phones with multifunctional line keys that can be set up as line registrations, call appearances, speed-dials, direct station select or busy lamp field keys. The VVX Expansion Module seamlessly matches the elegant look and feel of the VVX Business Media Phones. When fully equipped, the VVX Business Media Phones function as a high-performance attendant console supporting up to three VVX Expansion Modules. Telephone attendants can reduce the number of lost customer calls, shorten transaction times, and increase the accuracy of call routing by promptly accepting, accurately screening, efficiently dispatching and effortlessly monitoring calls.