For this weeks review of vendor architectures, we leave Europe and journey in the other direction to the Peoples Republic of China, home of Huawei Technologies Co, Ltd. Huawei Technologies was founded in 1988, and claims to be the number one equipment vendor in China. It employs over 30,000 staff members, 47 percent of whom are engaged in research and development activities. It offers more than 700 communications equipment solutions in the wireline and wireless industries, with products deployed in over 100 countries throughout North and South America, Europe, and the Far East, serving over one billion end users. The North American subsidiary of Huawei Technologies is named FutureWei, which was founded in 2001, and based in the Dallas, Texas Telecom Corridor. This subsidiary includes a staff of over 150 individuals that provide both research and development plus sales support, focusing on products in the optical networking, broadband access, next-generation networks, wireless, core switching, and video conferencing areas.
The Huawei next generation network architecture is called U-SYS, which is a VoIP solution aimed at the carrier market. U-SYS enables carriers to provide a diversified portfolio of services, including Class 4, Class 5, and IP Centrex. The architecture can handle TDM-to-TDM, or TDM-to-IP connections, and includes functions such as flexible routing and authentication, plus network management, billing, and statistics. Furthermore, Huawei has included multi-national VoIP capabilities, such as multi-time zone, multi-area access code, domain-based network management, and multi-country language and signaling support. The product line includes:
- SoftX3000 Softswitch: implements the softswitch function of the U-SYS architecture. It is designed for carrier-class reliability, with redundancy of major subsystems, hot swappable components, online software patching and 99.999 percent availability. Protocols supported include H.248/MGCP, H.323, SIP, and Signaling System 7 (SS7), with Class 4, Class 5, and IP Centrex services provided. The softswitch is capable of processing 16 million busy hour call attempts (BHCA), with a capacity of 2 million subscribers and 360,000 trunks.
- UMG8900 Universal Media Gateway: implements the media gateway function of the U-SYS architecture, and supports both narrowband and packet switching functions across a variety of hardware interfaces. It has the capacity for up to 70,000 VoIP channels, and 360,000 TDM trunks, with T1/E1, Ethernet and ATM interfaces. The gateway supports a number of standard codecs, including G.711, G.723, G.726, G.729, plus the T.38 fax standard.
- TMG8010 Trunk Media Gateway: is an edge access device that enables interoperation between the PSTN and IP network with a specific Quality of Service (QoS) guarantee. This gateway implements the coding/decoding between the PTSN circuit and the IP network, including delay and jitter compensation.
- SG7000 Signaling Gateway: is an independent signaling gateway to fulfill the interoperating requirements between the PSTN and next generation networks. It supports both SIGTRAN and SS7 protocols, with a capacity of 5,120 64 Kbps links or 640 2 Mbps (E1) links.
- AMG5000 Access Media Gateway: integrates customer access lines, including POTS, ISDN, and DSL into the next generation network.
- MRS6000 Media Resources Server: operates under the control of the softswitch, and provides media resources to the packet network. The server is based upon direct packet technology, and thus eliminates the need for TDM to IP conversions, and the associated coding and decoding. It supports both SIP and MGCP, with a capacity for 18,000 G.711 voice streams, or 2,880 G.729 voice streams.
- iManager N2000 Operation Support System: provides an integrated network management system for all the components of the U-SYS architecture, including the softswitches and gateways. It supports end-to-end service management, and provides detailed information regarding specific device operation and performance statistics. It is compatible with the Simple Network Management Protocol (SNMP), and supports topology, fault, configuration, performance, and security management functions, with a maximum storage capability for 1 million alarms.
Further details on the Huawei architecture and products can be found at www.huawei.com, and information on the North American organization, FutureWei, can be found at www.futurewei.com. Our next tutorial will continue our examination of vendors architectures.
Copyright Acknowledgement: © 2006 DigiNet ® Corporation, All Rights Reserved
Mark A. Miller, P.E. is President of DigiNet ® Corporation, a Denver-based consulting engineering firm. He is the author of many books on networking technologies, including Voice over IP Technologies, and Internet Technologies Handbook, both published by John Wiley & Sons.