It is recommended to the telecom department all over the world by the ITU, but it is difficult to realize in real time because of the high algorithmic complexity.

是ITU向全世界电信部门推荐的标准，但其复杂度较高，实时实现存在较大的困难。

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In particular the demolition of this first post-integrated inter-operator it handover the technical difficulty is unique in the history of ITU Telecom World, but there is no precedent for reference.

特别是这种先拆后整合的跨运营商IT交接所存在的技术难度是世界电信史上绝无仅有的，更没有任何先例可供借鉴。

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