BS M 61:1989
Specification for envelope dimensions of 'P' clamps (loop clamps) for fluid systems
现行
发布日期 :
1989-09-29
实施日期 :
ITU-T D.61
Charging and accounting provisions relating to the measurement of the chargeable duration of a telex call
现行
发布日期 :
2025-11-01
实施日期 :
ITU-T F.61
Operational provisions relating to the chargeable duration of a telex call
现行
发布日期 :
2025-11-01
实施日期 :
ITU-T J.61
Transmission performance of television circuits designed for use in international connections
现行
发布日期 :
2001-06-01
实施日期 :
ITU-T N.61
Measurements to be made before the line-up period that precedes a television transmission
现行
发布日期 :
2025-11-01
实施日期 :
ITU-T O.61
Simple equipment to measure interruptions on telephone-type circuits
现行
发布日期 :
2025-11-01
实施日期 :
ITU-T V.61
A simultaneous voice plus data modem, operating at a voice plus data signalling rate of 4800 bit/s, with optional automatic switching to data-only signalling rates of up to 14 400 bit/s, for use on the General Switched Telephone Network and on leased point-to-point 2-wire telephone type circuits
现行
发布日期 :
2016-08-01
实施日期 :