The technical requirement for quality of communication for inter-public telecom netwrok-call completion rate and post dailling delay for telephone call
基本信息
标准号:
YD/T 1284-2003
名称:
公用电信网间通信质量技术要求----电话呼叫的接通率和拨号后延时
英文名称:
The technical requirement for quality of communication for inter-public telecom netwrok-call completion rate and post dailling delay for telephone call