近年来,随着信息网络技术的发展,通信网络规模的不断扩大,组网技术及网络设备都已经非常完善,市场竞争也日趋激烈。提供多样化、多层次的新业务和建立更完善可靠的网络服务体系成为运营商竞争的重要手段。 In recent years, with the development of information network technology and the continuous expansion of the size of communication networks, networking technologies and network equipment have been greatly improved and market competition has become fiercer. To provide diversified, multi-level new business and establish a more complete and reliable network service system has become an important means of competition for operators.