Smart, sleek, stylish and highly functional, the Avaya 9640 IP Telephone is designed for the Essential user, those for whom the telephone is essential in order to perform their jobs. Workers who conduct much of their business on the phone — moving from one call to the next. The Avaya 9630/9640 delivers advanced communications capabilities — high definition audio, a brilliant high resolution pixel based color display on the 9640, an integrated WML application interface, one-touch access to Avaya IP Office  mobility or forwarding features — in a solution designed for those who are absolutely dependent on voice communications for their business operations.