Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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Standard No. Title Price(USD) Delivery Status Add to Cart
GB/T 18498-2001 Interworking between packet switched public data networks and public maritime mobile satellite data transmission systems $190.00 via email in 1~3 business day valid
GB/T 19516-2004 The specifications of wired-emergency telephone system of expressway $364.00 via email in 1~3 business day superseded
GB/T 19516-2017 Wired-emergency telephone system of expressway $250.00 via email in 1~3 business day valid
GB/T 19856.1-2005 Lighting protection-Telecommunication lines Part 1: Fibre optic installation $370.00 via email in 1~3 business day valid
GB/T 19856.2-2005 Lightning protection—Telecommunication lines—Part 2:Lines using metallic conductors $570.00 via email in 1~3 business day valid
GB/T 19897.2-2005 Automatic meter reading system lower layer communication protocol—Part 2:Use of area networks on twisted pair with carrier signalling $740.00 via email in 1~3 business day superseded
GB/T 20185-2006 Optical interface requirements for equipments and systems relating to the synchronous digital hierarchy $240.00 via email in 1~3 business day valid
GB/T 21639-2008 The technical requirements of video conferencing service for IP-based network $810.00 via email in 1~5 business day valid
GB/T 21640-2008 Technical standards for cooperation between equipments of IP-based video conference system $900.00 via email in 1~5 business day valid
GB/T 21641-2008 Technique requirements of video conferencing system inter working between different technologies $720.00 via email in 1~5 business day valid
GB/T 21642.1-2008 The technical requirements for video conference system devices based on IP-based network - Part 1: Multipoint Controller $600.00 via email in 1~5 business day valid
GB/T 21642.2-2008 The technical requirements for video conference system devices based on IP-based network - Part 2: Multipoint Processor $330.00 via email in 1~3 business day valid
GB/T 21642.3-2012 Technical requirements for IP video conference system devices—Part 3:multipoint control unit $600.00 via email in 1~3 business day valid
GB/T 21642.4-2012 Technical requirements for IP video conference system devices—Part 4:Gatekeeper $720.00 via email in 1~3 business day valid
GB/T 21643-2008 IP Authentication Header $120.00 via email in 1~3 business day valid
GB/T 21644-2008 General Description of Networks Distance Learning $360.00 via email in 1~3 business day valid
GB/T 21645.1-2008 Technical requirements for Automatically Switched Optical Network - Part 1: Architecture and general requirements $1500.00 via email in 1~5 business day valid
GB/T 21645.10-2017 Technical requirements for automatically switched optical network(ASON)―Part 10:Multi-layer and multi-region control plane $750.00 via email in 1~5 business day valid
GB/T 21645.11-2017 Technical requirements for Automatically Switched Optical Network(ASON)―Part 11:Path Computation Element (PCE) and protocol $930.00 via email in 1~5 business day valid
GB/T 21645.2-2010 Technical requirements for automatically switched optical networks—Part 2:Terms and definitions $510.00 via email in 1~3 business day valid
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