试题详情
- 单项选择题Which IP telephony component provides call processing, such as signaling, that in a traditional voice network is provided by switching equipment, such as a PBX?（）
A、Advanced call-handling software, such as Cisco Unity
B、Call-management hardware and software, such as CiscoCallManager
C、Client-based software, such as CiscoSoftPhone
D、Voice gateways, such as the Cisco VG248 Analog Phone Gateway
- B
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