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