This Recommendation discusses various facsimile measurement methodologies focusing on G3 facsimile as defined by Recommendations T.4, T.6. T.30 and used on PSTN as defined by Recommendations F.180 and F.182. The Recommendation evaluates the advantages and disadvantages of intrusive (test-call based), non-intrusive, mixed-mode and terminai based measurements. Test planning aspects including planning approach, measurement topology, test location points, and some statistical aspects are also discusse
ITU-T E.457 SPANISH-1996由国际电信联盟 IX-ITU 发布于 1996-02-01。
ITU-T E.457 SPANISH-1996 在中国标准分类中归属于: M10 通信网综合,M11 通信网技术体制,M39 传真电报设备。
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