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The IMS network realizes the integration of mobile and fixed networks. Huawei utilizes the ETSI TISPAN Network Attachment Subsystem (NASS) architecture for the fixed network subscribers to access the IMS network. The AIM6300 realizes the function of NACF and CLF in NASS architecture. The AIM6300 belongs to the access internetworking layer. It provides the location management, network access configuration and user information storage of the fixed network to realize the validity check, network parameter distribution and physical position location of the terminal equipment.
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