(Requires Bizfon 680 Box #1 Control Unit) Bizfon 680 Box 2 Control Unit Expansion Box - Adds 6 incoming phone lines and 8 extensions with voicemail, to 680 Box #1. Includes 2-Box cable kit and 1 year warranty.
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(Requires Bizfon 680 Box 1 & Box 2 Control Units) Bizfon 680 Box 3 Control Unit Expansion Box - Adds 6 incoming phone lines and 8 extensions with voicemail, to 680 Boxes #1 and #2. Includes Multi-Box Hub Kit and 1 year warranty.
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(Requires Bizfon 680 Boxes 1, 2 & 3 Control Units) Bizfon 680 Box 4 Control Unit Expansion Box - Adds 6 incoming phone lines and 8 extensions with voicemail, to 680 Boxes 1, 2 & 3. Includes 1 year warranty.
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Bizfon 680 Control Unit - Supports 6 incoming phone lines and 8 extensions, with voice mail, automated attendant, and more. Includes 60 Days Help Desk and 1 year warranty. (black)
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