Avaya 4000 series DECT handsets provide a wireless, in-building, private communications system ideal for on- site employees who either spend a large proportion of their time away from their desks or are perhaps without a dedicated office space. Handset portfolio is compatible with Avaya communication server 1000 and Meridian 1 PBX, its various features and accessories facilitate operation in a wide range of business environments. DECT handsets are ergonomically designed, easy to use, lightweight, pocket-sized and cost- effective enterprise wireless phones. Moreover, it keeps you in constant communication wherever you happen to be on-site. The display illuminates, allowing the handset to be used in poorly lit conditions and the internal loudspeaker enables handsfree operation with excellent sound quality.