The Avaya IP Phone J139 provides a modern, connected, personalized
\nexperience for customers and addresses the need for secure, reliable
\nvoice communications for users within large enterprises and small and
\nmedium-sized companies. It is well suited for users that need only the
\nmost commonly used voice features. It provides a new level of simplicity
\nin using features such as Hold, Transfer, Conference, Forward, and Call
\nPark \/ UnPark.<\/p>\n
2.8\u201d (diagonal) color display\u2014320 x 240 pixels
\n\u2022 Multiple line phone with four red \/ green line \/ feature indicators
\naround display
\n\u2022 4 Context sensitive soft keys
\n\u2022 Hard buttons for phone, messages, contacts, history, home, navigation
\ncluster, headset, speaker, volume, mute
\n\u2022 LEDs for speaker, mute, headset, message, history
\n\u2022 Wideband audio in handset and wired headset
\n\u2022 Full duplex speakerphone & handset
\n\u2022 Ergonomic hearing aid compatible handset supports TTD acoustic coupler
\n\u2022 Message waiting indicator
\n\u2022 Mute key with optional mute alerting
\n\u2022 IC call alerting with 360-degree visibility
\n\u2022 Rich, classic, alternate, and downloadable ringtones
\n\u2022 Dual-position stand, optional wall-mount stand
\n\u2022 Gigabit Ethernet (10 \/ 100 \/ 1000) line interface
\n\u2022 Second Ethernet interface 10 \/ 100 \/ 1000 Mbps
\n\u2022 PoE Class (IEEE 802.3af) registers as class 1 device and supports 802.3az
\n\u2022 Optional AC to 5 volt power supply<\/p>\n