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?()
Advanced call-handling software, such as Cisco Unity
B. Call-management hardware and software, such as CiscoCallManager
Client-based software, such as CiscoSoftPhone
D. Voice gateways, such as the Cisco VG248 Analog Phone Gateway
习近平同各界优秀青年代表座谈时的讲话中指出广大青年要立足本职、埋头苦干,从自身做起,从点滴做起,用勤劳的双手、一流的业绩成就属于自己的人生精彩,这说明我们大学生应()。
A. 空谈误国,实干兴邦
B. 创就一流业绩
C. 善于创新,勇于创新
D. 抓住机遇,敢于前进