Standard software protocol and hardware H.323 weighted fair queuing method DSP MPLS Label Switching Weighted Random Early Detection Advanced ASIC RTP, RTCP double funnel Universal Cell Rate Algorithm DWDM RSVP visit the crash rated rate SONET Diffserv, CAR Cisco Express CPU processing power forward G. 729, G.729a: CS-ACELP expand access table ADSL, RADSL, SDSL FRF.11/FRF.12 token bucket algorithm Multilink PPP Frame Relay data rectifier-shaped SIP priority-based CoS Packet over SONET IP and ATM QoS / CoS integration
2, advanced ASIC ASIC (Application-Specific Integrated Circait, ASIC) development of a faster, more complex, more powerful ASIC. ASIC implementation of a single application or a small one devoted to the application of functional chips. Because a very narrow focus on the application of the target, so that they can carry out specific functions of a high degree of optimization, general-purpose CPU is usually double-quick one or a few orders of magnitude. As reduced instruction set computer (RSIC) focused on the rapid implementation of the chip limits the number of throwing the same operation, ASIC has been pre-programmed to enable them to more quickly implement a limited number of functions. Once developed, ASIC production cost is not high, are used to include routers and switches such as network equipment, the implementation of the routing table, packet forwarding, packet classification and inspection, as well as features such as queuing. The use of ASIC devices is higher and the lower cost. They provide increased broadband network and better QoS support for VoIP development therefore plays a significant role in promoting.
3, IP transmission technique holds most of the use of telecommunication network transmission TDM mode, the Internet to be used are statistical multiplexing variable-length packet switching approach, both compared to the latter on the network resource utilization high interconnection simple and effective, is very applicable to data services, this is the rapid development of the Internet can be one of the important reasons. However, the broadband IP network QoS and delay characteristics of the proposed requirements engraved Gou, therefore, statistical multiplexing of variable-length packet switching technology development concern for people. At present, apart from a new generation of already available IP protocol - IPV6, the World Internet Engineering Task Force (IETF) has proposed a multi-protocol Label Switching (MPLS), which is a network layer routing based on a variety of tags / labels exchange, to improve routing flexibility, the expansion of network layer routing capabilities, simplify router and exchange-based cell integration, improve network performance. MPLS can be as an independent job routing protocol, but also with the existing network-compatible routing protocol to support a variety of IP network operations, management and maintenance functions, to enable IP network communications QoS, routing, signaling, such as performance greatly enhanced at or near statistical multiplexing fixed-length packet switching (ATM) level, than the ATM and easy, efficient, cheap, applicable. IETF also to pay close attention to the new Li-li had surgery division in order to achieve QoS routing. Are studying one of the "tunnel technology" is a one-way link in order to achieve broadband transmission. In addition, how to select IP network transmission platform in recent years is also an important area of research has appeared in IP over ATM, IP over SDH, IP over DWDM technologies such as broadband networks currently accepted analytical model as shown.
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