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Turn your Polycom VVX business media phone Into a high-performance attendant console The Polycom® VVX® Expansion Module is a cost-effective 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.