The Avaya J100 Expansion Module extends the number of call appearances and
feature buttons on the Avaya IP J179 Phone. Each expansion module provides
24 additional buttons for incoming/outgoing calls, for features such as autodial,
for dialing contacts, or for other applications.

Specifications

4.3 inches, 272 x 480 pixel color display.

The Avaya IP Phone J179 support up to 3 button modules, and each button module can take both Stand and Wall mount positions together with the phone.

The J100 Expansion Module provides access to up to 24 buttons and lamps with ability to display 3 pages when a single expansion module is used.

Each feature/line button has a red/green indicator

Pre-configured background or screensavers are available to match the
base phone.

Power is supplied by base J179 (PoE class 2). If 3 expansion modules are
attached to J179, then an external 5 volt power supply is required.

Supported on J179 with both H.323 and SIP software.