The Avaya 9508 multi-line digital business telephone (700504842) is a corded office phone in the Avaya 9500 Series for use on Avaya IP Office systems. This DCP digital desk telephone connects to one available digital station port on the IP Office system and supports Avaya IP Office Release 7.0 or later. The 9508 features an 8-line x 32-character white backlit display, 8 administrable buttons across 3 levels providing 24 total programmable positions, each with dual red/green LEDs for line status. Caller information is displayed on active appearances; calls continue alerting visually when the ringer is silenced. Ten permanently-labeled fixed keys — Speaker, Headset, Mute, Volume, Menu, Phone, History, Contacts, Voicemail — plus 4 context-sensitive softkeys and a 4-way navigation cluster provide full call control including hold, transfer, conference, and redial. The Avaya 9508 corded office telephone includes a two-way full-duplex speakerphone and RJ9 headset jack; Poly/Plantronics wireless headsets connect via APV-63 EHS cable (confirmed per Poly compatibility documentation). Up to 3 BM12 button modules expand this multi-line desk telephone to 96 total key positions. Per IP Office platform configuration: contacts application holds 100 entries; call log stores 30 entries (missed, answered, outgoing). Global/Icon version: fixed keys use icons, no language text. Includes handset with 9 ft cord, dual-position stand, and RJ11 line cord.