Standards GB - Chinese national standards - Page 5173

Electrical characteristics for balanced double-current interchange circuits for general use with integrated circuit equipment in the field of datacommunications

Standard published on 3.4.1987

Standard current ratings

Standard published on 26.3.2002

300 bits per second duplex modem standardized for use in the general switched telephone network

Standard published on 3.4.1987

1200 bits per second duplex modem standardized for use in the general switched telephone network and on point-to-point 2-wire leased telephonecircuits

Standard published on 3.4.1987

600/1200 bauds modem standardized for use in the general switched telephone network

Standard published on 3.4.1987

Automatic answering equipment and/or parallel automatic calling equipment on the general switched telephone network including procedures for bling of echo control devices for both manually and automatically established calls

Standard published on 3.4.1987

2400 bits persecond modem standardized for use on 4-wire leased telephone type circuits

Standard published on 3.4.1987

2400/1200 bits per second modem standardized for use in the general switched telephone network

Standard published on 3.4.1987

4800 bits per second modem with manual equalizer standardized for use on leased telephone-type circuits

Standard published on 3.4.1987

Lubricantsindustrial oils and related products(class L) - Classification - Part 1:General

Standard published on 23.6.2008