Select the three foundational hardware components that comprise the Smart Business Communication System.（）
- A、IPcelerate IPsmartSuite
- B、Cisco Unified Communication 500 series
- C、Catalyst Express
- D、Cisco UnifiedCallConnector
- E、Cisco Monitor Directory
- F、Cisco 500 seriesphones
正确答案:B,C,F
答案解析:有
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