Engenius Tech EnGenius DuraFon PRO Expansion Base - 90 x Handset Supported - 4 Simultaneous Calls

The EnGenius DuraFon PRO-BU is the expansion base that enables connection of an additional four (4) lines/ports to an existing DuraFon PRO installation. Also use the DuraFon PRO-BU for "Extended Range" options that are available with the DuraFon PRO product line. ; Multi-Line Functionality ; Supports up to 90 DuraFon PRO or DuraWalkie Handsets ; Works Behind any Analog Port (PBX, VoIP, PSTN, FXS or POTS) ; Expandable for Extended User Capacity