美利体育登录入口官网:ITU-T E.450 SPANISH-1998
公共网络业务的传真质量.一般概念.系列E:整体网络操作,电话业务,业务操作和人为因素.系列E:整体网络操作.电话业务.业务操作和人为因素.网络管理和流量工程的业务质量.网络管理.检查国际电话业务的质量
Facsimile Quality of Service on Public Networks - General Aspects - Series E: Overall Network Operation Telephone Service Service Operation and Human Factors - Quality of Service Network Management and Traffic Engineering - Network Management - Checking t