Network managers have long awaited practical voice-over-IP(VOIP)solutions. VOIP promises ease network management and decreases(66)by converging a company's telephony and data infrastructures into one network. And a VOIP solution implemented at a company's head-quarters with far-reaching branch offices can(67)tremendous amounts of money in long distance phone bills, provided that solution delivers POTS-like voice(68)over the Internet.
VOIP gateways are designed to convert voice from the(69)domain to the circuit switched domain. VOIP solutions use a digital signal processor(DSP)to process the voice data, preparing the voice sample for transmission by compressing voice and removing jitter. The VOIP equipment must comply with the(70)H.323 standard defined by the International Telecommunication Union, or ITU.
A.time
B.cash
C.costs
D.space
第1题:
在VoIP系统中,通过对声音信号进行压缩编码。A.ISP B.VoIP网关 C.核心路由器 D.呼叫终端
第2题:
A.QoS
B.Trunking
C.Spanning
D.VoIP
第3题:
A.Auth(认证);
B.Auth(认证)、Link(链路)、VOIP(语音);
C.VOIP(语音)
第4题:
在VoIP系统中,通过(37)对声音信号进行压缩编码。
A.ISP
B.VoIP网关
C.核心路由器
D.呼叫终端
第5题:
A.SIP
B.RTSP
C.H.323
D.MGCP
第6题: