【正文】 maintenance center.Huawei offers series of handsets and fixed wireless terminals in different bands and different types to meet the requirements form different customers.Huawei presents plete BTS family to different coverage requirements, and powerful BSC for 1X+DO network. Huawei radio access network can work in different frequencybands of 450MHz/ 800MHz/ 1900MHz/ 2100MHz, in Huawei CDMA2000, 1X + DO mixed configuration is available, that means, in the same BTS, 1X + DO is supported at the same time, the same BSC supports 1X + DO, and the same OMC supports 1 X + DO.Matured and advanced SoftSwitch is adopted in Huawei CDMA system to replace traditional MSC to perform switching function, including call handling and control, routing, mobility management, location registration, echo cancellation, and overload control…Huawei also provides HLR (HLR9820), PDSN (PDSN9660), Service Layer equipments like SMSC/MMSC, WIN, billing center, data service platform, OMC … for Endto End solution. Huawei SoftSwitch technologyHuawei SoftSwitch has been applied in many networks like in PTCL Pakistan, IUSACELL Mexico, and CMCC China …. In these mercial large capacity applications, Huawei SoftSwitch performed reliable and powerful features.In Pakistan, Huawei provided IN, CDMA infrastructure and terminals to PTCL in first phase. Five local CDMA networks were distributed in 5 big cities Islamabad, Lahore, Multan, Quetta and Peshawar, including 1 WIN/SMSC, 1 PDSN, 5 MSC/HLR, 5 BSC, 127 BTS, and BSS capacity is 213,000 subscribers, NSS capacity is 291,000 subscribers, subscriber’s traffic is , Huawei got 90% NSS supply, (SoftSwitch + WIN), NSS capacity is 1,275,000 subscribers (including 400,000 of CDMA450, 875,000 of CDMA1900), in 9 areas, Huawei is the biggest supplier.In the project of IUSACELL CDMA2000 network Mexico, the capacity is 200,000 subscribers to cove 2 areas, section 1 and section 8, there are pairs of sates in each section. In section 1 the system is totally new CDMA2000 system, while in section 8 the system mainly es from Huawei, the small part is from Motorola. In section 8 the sy。 pacific, Africa, Middle East, Latin America and north America., such as ., Mexico, Brazil, Portugal, Romania, Russia, Belarus, Turkmenistan, Kirgizstan, Uzbekistan, Georgia, Azerbaijan, Kazakstan, Ukraine, Thailand, Indonesia, India, Pakistan, Vietnam, Brunei, Yemen, Saudi Arab, Egypt, Algeria, Nigeria, Ethiopia, …. The total capacity is . 20 million subscribers. Especially, Huawei is the leading vendor of CDMA450 application with 66% market share worldwide, and 43% market share of CDMAWLL, 5 mercial EVDO networks and over 15 DO trial networks.In 2004, American operator (NTCHCA) selected Huawei as the supplier of her CDMA network. And in the 1st phase, Huawei deployed 2 local networks in California and Arizona in 1900MHz, including SMS amp。 optimization. Huawei has the experience of network planning amp。M, flexible rollout and control of services.b) Huawei R4 Core Network supports simultaneous access of both UTRAN and GSM BSS, and also has backward patibility with 3GPP Rel99. So we call it a unified core network solution.c) The MSC Server and MGW feature large capacity, high density and highscalability. They both have pact configuration of one single rack, supporting 50,000 subscribers to the minimum. Due to the modular design, they can be expanded all the way to their full capacity, . million subscribers with 3 racks.d) The Video Interworking Gateway (VIG) is a very important network element for the realization of mobile video services. It functions as the interpreter for signaling between systems based on different video standards, . and , enabling the interconnection of video services between UMTS and other tele systems, . NGN, broadband, Internet.e) Huawei adopts enhanced technologies to improve the quality of voice service, including TFO/TrFO, AMR Control, Comfortable Noise Generation, and Loss Packet Compensation.f) Huawei’s CS CN products have been widely deployed in the mercial network of China, Thailand and . At the same time, Huawei NGN products, which are based on same platform as Huawei UMTS CS CN, have been deployed in Brunei Tele. China Tele, China Satellite Tele. British Tele, etc. CN CS equipments introductiona) UMG8900: Media Gatewayn l Unified media gateway for both mobile and fixed system n l Smooth evolution to R5/R6, reusing existing hardwaren l Support dual homing features, networklevel reliability ensuredn l Support E1/T1, SDH/ATM/POS 155M, FE/GEn l Support , multiparty session, etcb) MSoftX3000: MSC Servern Abundant services: CAMEL 3, LCS, lawful interception, USSD callback, n l Large capacity and high density, million subs with 3 racksn l Support dual homing networking, embedded SG functionsn l Support both layered and nonlayered network architecturen l Support simultaneous access of GSM BSS and UTRAN Versatile PS Core Networka) Huawei PS Core Network supports the simultaneous access of both UTRAN and GPRS BSS. It can support R99/R4/R5 and smooth evolution to R6 is also guaranteed.b) The GGSN embeds the SSP function and can support PrePaid Service (PPS). Huawei has provided the GGSN equipment for AIS of Thailand, enabling its prepaid subscribers to enjoy the attractive data services bringing by GPRS.c) The GGSN has the contentdetection functionality. As a result, contentbased charging can be supported by Huawei PS CN. This function gives operator the freedom of choosing different billing strategy and business modes.d) Due to the contentdetection capability, another function which is called OnlyOne APN can be provided. With this function, the endusers do not need to reselect APN by hand when they are changing to other services. The network will do the routing for the enduser. Reselection of APN will be invisible by endusers. This function brings more convenience to both the endusers and the operators. e) Huaw