How do Cisco Unified Communications IP phones receive firmware upgrades?()
- A、user request using the keypad of the phone and HTTP download
- B、IT department scheduled upgrade using HTTP download
- C、TFTP download based on version control through Cisco Unified Communications Manager
- D、FTP download based on version control through Cisco Unified Communications Manager
- E、HTTP download based on version control through Cisco Unified Communications Manager
正确答案:C
答案解析:有
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