2025-12-23 216.73.216.41
Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
Position: Search valid to be valid superseded to be superseded abolished to be abolished
Standard No. Title Price(USD) Delivery Status Add to Cart
YD/T 1938.2-2009 Test method for Session Initiation Protocol (SIP) Part 2:SIPs Applications about Call Control Basedon Softswitch Network 780.0 via email in 1~3 business day valid,,2009-9-1
GB/T 9540-1988 Wideband modem for synchronous data transmission at a data signalling rate higher than 72 kbit/s using 60～108kHz group band circuits 380.0 via email in 1~3 business day abolished2005-10-14,,1989-2-1
GB/T 28503-2012 Technical requirements of adaptation layer of No.7 signalling interworking with IP MTP2 user adaptation layer 810.0 via email in 1~3 business day valid,,2012-10-1
GA 330-2001 Transmission technology protocol of alarm for 351 MHz 224.0 via email in 1~3 business day valid,,2001-12-1
YD/T 2042-2009 IPv6 network equipment security requirements——Ethernet switch with routing capability 240.0 via email in 1~3 business day valid,,2010-1-1
YD/T 1938.1-2009 Test method for Session Initiation Protocol (SIP) Part 1：Basic Session Initiation Protocol 4470.0 via email in 1~3 business day valid,,2009-9-1
GB/T 28502-2012 Technical requirement of interworking between No.7 signalling and IP 600.0 via email in 1~3 business day valid,,2012-10-1
GB/T 28500-2012 Technical requirements of 900/1 800 MHz TDMA digital cellular mobile network signaling system No.7 ISUP 1740.0 via email in 1~3 business day valid,,2012-10-1
GB 3377-1982 Multi frequency register signalling system for telephone antomatic switching network 270.0 via email in 1~3 business day valid,,1983-10-1
YD/T 928-1997 Technical specification for ISDN PABXs 250.0 via email in 1~3 business day valid,,1998-1-1
GB/T 5444-1985 The test methods for the technical specifications of subscriber line signalling for automatic telephone switching network 244.0 via email in 1~3 business day valid,,1986-6-1
GB/T 28505-2012 Technical specification of national No.7 signalling system 2 Mbit/s high speed link 330.0 via email in 1~3 business day valid,,2012-10-1
YD/T 1662-2007 Testing Methods for National No.7 Signalling System——GSM Mobile Telephone User Part (MTUP) 1050.0 via email in 1~3 business day valid,,2007-12-1
GB/T 5442-1985 The test methods for the technical specifications of inband pulsing single frequency line signalling system for automatic telephone switching network 120.0 via email in 1~3 business day valid,,1986-6-1
YD/T 1684-2007 Technical Requirements and Testing Methods for the Billing of the Digital Cellular Mobile Telecommunication Network Point to Point Short Message Service 270.0 via email in 1~3 business day superseded,2015-7-14,2008-1-1
YD/T 1522.4-2009 Technical Requirements for Session Initiation Protocol Part 4 SIPs Applications about call control Based on Softswitch Network 340.0 via email in 1~3 business day valid,,2009-9-1
GB 3376-1982 Inband pulsing single frequency line signalling system for telephone automatic switching network 224.0 via email in 1~3 business day valid,,1983-10-1
GB/T 5443-1985 The test methods for the technical specifications of ringing and tone for automatic telephone switching network 244.0 via email in 1~3 business day valid,,1986-6-1
DB50/ 469-2012 via email in business day valid,,2013-5-1
GB/T 29198-2012 Technical requirements of adaptation layer of No.7 signalling interworking with IP—MTP2 peer-to-peer adaptation layer 480.0 via email in 1~3 business day valid,,2013-6-1
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YD/T 1938.2-2009 Test method for Session Initiation Protocol (SIP) Part 2:SIPs Applications about Call Control Basedon Softswitch Network 
  Issued on: 2009-6-15   Price(USD): 780.0
GB/T 9540-1988 Wideband modem for synchronous data transmission at a data signalling rate higher than 72 kbit/s using 60～108kHz group band circuits 
  Issued on: 1988-06-30   Price(USD): 380.0
GB/T 28503-2012 Technical requirements of adaptation layer of No.7 signalling interworking with IP MTP2 user adaptation layer 
  Issued on: 2012-6-29   Price(USD): 810.0
GA 330-2001 Transmission technology protocol of alarm for 351 MHz 
  Issued on: 2001-10-15   Price(USD): 224.0
YD/T 2042-2009 IPv6 network equipment security requirements——Ethernet switch with routing capability 
  Issued on: 2009-12-11   Price(USD): 240.0
YD/T 1938.1-2009 Test method for Session Initiation Protocol (SIP) Part 1：Basic Session Initiation Protocol 
  Issued on: 2009-6-15   Price(USD): 4470.0
GB/T 28502-2012 Technical requirement of interworking between No.7 signalling and IP 
  Issued on: 2012-6-29   Price(USD): 600.0
GB/T 28500-2012 Technical requirements of 900/1 800 MHz TDMA digital cellular mobile network signaling system No.7 ISUP 
  Issued on: 2012-6-29   Price(USD): 1740.0
GB 3377-1982 Multi frequency register signalling system for telephone antomatic switching network 
  Issued on: 1982-12-29   Price(USD): 270.0
YD/T 928-1997 Technical specification for ISDN PABXs 
  Issued on: 1997-12-5   Price(USD): 250.0
GB/T 5444-1985 The test methods for the technical specifications of subscriber line signalling for automatic telephone switching network 
  Issued on: 1985-10-30   Price(USD): 244.0
GB/T 28505-2012 Technical specification of national No.7 signalling system 2 Mbit/s high speed link 
  Issued on: 2012-6-29   Price(USD): 330.0
YD/T 1662-2007 Testing Methods for National No.7 Signalling System——GSM Mobile Telephone User Part (MTUP) 
  Issued on: 2007-7-20   Price(USD): 1050.0
GB/T 5442-1985 The test methods for the technical specifications of inband pulsing single frequency line signalling system for automatic telephone switching network 
  Issued on: 1985-10-30   Price(USD): 120.0
YD/T 1684-2007 Technical Requirements and Testing Methods for the Billing of the Digital Cellular Mobile Telecommunication Network Point to Point Short Message Service 
  Issued on: 2007-9-29   Price(USD): 270.0
YD/T 1522.4-2009 Technical Requirements for Session Initiation Protocol Part 4 SIPs Applications about call control Based on Softswitch Network 
  Issued on: 2009-6-15   Price(USD): 340.0
GB 3376-1982 Inband pulsing single frequency line signalling system for telephone automatic switching network 
  Issued on: 1982-12-29   Price(USD): 224.0
GB/T 5443-1985 The test methods for the technical specifications of ringing and tone for automatic telephone switching network 
  Issued on: 1985-10-30   Price(USD): 244.0
DB50/ 469-2012  
  Issued on: 2013-03-01   Price(USD):
GB/T 29198-2012 Technical requirements of adaptation layer of No.7 signalling interworking with IP—MTP2 peer-to-peer adaptation layer 
  Issued on: 2012-12-31   Price(USD): 480.0
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