Avaya J189 IP Phone is a phone for business communications. The phone has two color displays and supports 96 line buttons. The primary display of the phone provides 96 buttons that you can access by scrolling or paging using the Navigation Cluster. Optionally, the phone supports up to two Avaya J100 Expansion Modules. The Secondary screen is the first effective expansion module. The phone supports up to five call appearances with two lines of call display.
For more information about Avaya J100 Expansion Modules, see Using Avaya J100 Expansion Module for SIP at https://support.avaya.com/.
The phone supports the OPUS Super wideband codec and Local Conference.