The Avaya 24 series adds several enhancements over previous generations of digital telephones. These include paperless button labeling, local call log and speed dial directories and streamlined styling consistent with Avaya IP telephones. There are currently three models in the 24 series: the entry-level 2402 Digital Telephone, the mid-level 2410 Digital Telephone, and the high-performance 2420 Digital Telephone.
The Avaya 2402 is a cost effective two-wire digital telephone, for many office applications. It is designed to complement the 2410 mid-level and 2420 executive telephones. The 2402 has a 2-line x 24-character display with two label-less call appearances, a Listen-Only Speaker, 10 Fixed Feature Keys: Conference, Transfer, Drop, Redial, Speaker, Message, Hold, Mute, Volume Up & Down, and Feature (to access 12 additional dial pad features). The 2402 is Hearing Aid Compatible, has a Message Waiting Indicator that flashes when ringing, eight Personalized Ring Patterns and is either desk or wall mountable.