Avaya IP Office IP500 (v. R10+) - license - 1 concurrent user, 2 additional T1 channels

With a greater VCM channel capacity and performance, the IP Office 500 (IP500) is incredibly suitable IP Telephony application. It also provides an entry level offer into the IP Office family through IP Office Standard Edition software. The IP500 also differs from the IP406 V2 and IP412 by providing a greater trunk expansion capability of multiple PRI interfaces.