Know your gear
This model will NOT work on Avaya Platforms. Approved for third party call control platforms only. The Avaya Essential Experience J139 IP Phone is a cost-effective IP device that addresses the need for secure, basic voice communications for users within large Enterprises and Small and Medium-sized companies. It is well suited for users that need only the most commonly used voice features. It provides a new level of simplicity in using features such as Hold, Transfer, Conference, Forward, and Call Park/UnPark.