The Avaya IP Phone J139 provides a modern, connected, personalized
experience for customers and addresses the need for secure, reliable
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.

Specifications

• 2.8” (diagonal) color display—320 x 240 pixels
• Multiple line phone with four red / green line / feature indicators
  around display
• 4 Context sensitive soft keys
• Hard buttons for phone, messages, contacts, history, home, navigation
  cluster, headset, speaker, volume, mute
• LEDs for speaker, mute, headset, message, history
• Wideband audio in handset and wired headset full duplex speakerphone & handset
• IC call alerting with 360-degree visibility
• Optional AC to 5 volt power supply