Telephone Systems
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The Business Communications Manager 450 can accommodate up to 10 Media Bay Modules (MBM) — four of them in the main unit and six in the Expansion unit. The Business Communications Manager 450 can support up to 300 digital or IP telephones. Business Communications Manager offers built-in voicemail including auto-attendant and CCR Trees. Additional features such as Unified Communications and Call Center can be activated using keycodes.

The Business Communications Manager 50 can be expanded with up to two Business Communications Manager 50 expansion cabinets — each with the ability to accommodate one MBM. The Business Communications Manager 50 has integrated support for up to 32 IP Telephones, or up to 42 digital telephones.Business Communications Manager offers built-in voicemail including auto-attendant and CCR Trees. Additional features such as Unified Communications and Call Center can be activated using keycodes.