Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
LoginRegister
Position: Search valid to be valid superseded to be superseded abolished to be abolished
Standard No. Title Price(USD) Delivery Status Add to Cart
GB/T 9541-1988 2400 bits per second duplex modem using the echo cancellation technique standardized for use on the general switched telephone network and on point-to-point 2 wire leased telephone-type 465.0 via email in 1~3 business day valid
GB/T 16712-2008 Characteristics of synchronous digital hierarchy (SDH) equipment functional blocks 2850.0 via email in 1~3 business day valid
GB/T 21645.11-2017 Technical requirements for Automatically Switched Optical Network(ASON)―Part 11:Path Computation Element (PCE) and protocol 930.0 via email in 1~10 business day to be valid
GB/T 21645.6-2009 Technical requirements for automatically switched optical network—Part 6:Management plane 360.0 via email in 1~5 business day valid
GB/T 14733.11-1993 Terminology for telecommunications-Telecommnication 690.0 via email in 1~8 business day abolished
YD/T 1991-2009 Technical requirements for N×40Gbit/s optical wavelength division multiplexing (WDM) systems 420.0 via email in 1~3 business day abolished
YD/T 1959-2009 Technical Requirements for 2048kbit/s Optical Interface Between Relaying Protection Equipment and Multiplexer 150.0 via email in 1~3 business day valid
GB/T 2789-1981 Technical requirements for network interface for the analogue microwave relay communication systems 120.0 via email in 1~3 business day valid
YD/T 1961-2009 Technical Requirements for SDH-based Multi-service Transport Platform (MSTP)--Interoperatibility 180.0 via email in 1~3 business day valid
GB/T 13621-1999 series and radio-frequency channel arrangement and equipment main technical specifications for 100~1 000MHz radio relay communication systems 240.0 via email in 1~3 business day valid
YD/T 847-1996 Frame Structures of 64 -1920kbit/S Channels in Audiovisual Telecommunication Services 390.0 via email in 1~3 business day valid
GB/T 13169-1991 General specification for 4MHz (960ch) carrier systems on standardized 1.2/4.4mm coaxial cable pairs 120.0 via email in 1~3 business day valid
GB/T 14731-2008 Synchronous digital hierarchy (SDH) bit rates 90.0 via email in 1~3 business day valid
GB/T 9405-1995 Performance and test methods of the third order digital multiplex equipment operating at 34368 kbit/s and using positive justification 210.0 via email in 1~3 business day valid
YD/T 985-1998 Regulations for Establishment of Communications Between Audiovisual Terminals With 3 Or More Digital Channels At Below 1930kbit/S 570.0 via email in 1~3 business day valid
JT/T 625-2005 Requirements of GPS/GSM&GPRS/GIS/NET technical system for inland shipping business enterprise 195.0 via email in 1~3 business day valid
GB/T 5438-1985 Characteristics and measuring methods for monophonic and stereophonic transmissions 180.0 via email in 1~3 business day valid
YD/T 1030-1999 Air Interface Technical Specifications of the 800MHz CDMA Digital Cellular Mobile Telecommunication Network 5340.0 via email in 1~10 business day valid
YD/T 2022-2009 Technical requirements for time synchronization equipment 210.0 via email in 1~3 business day valid
GB/T 17904.2-1999 ISDN user-network interface data link layer specification and conformance testing method Part 2: Data link layer protocol conformance testing method 2010.0 via email in 1~3 business day valid
About Us | Contact Us | Payment
Tel: +86-10-8572 5655 | Fax: +86-10-8581 9515 | Email: coc@codeofchina.com | Send me a messageQQ: 672269886
Copyright: Codeofchina Inc 2008-2020