2025-12-21 216.73.216.41
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Code of China
Chinese National Standard List: Communication network number, signal and connection

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   Translation Price(USD): 780.0
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   Translation Price(USD): 810.0
YD/T 1938.1-2009 Test method for Session Initiation Protocol (SIP) Part 1：Basic Session Initiation Protocol 
  Issued on: 2009-6-15   Translation Price(USD): 4470.0
GB/T 28502-2012 Technical requirement of interworking between No.7 signalling and IP 
  Issued on: 2012-6-29   Translation 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   Translation Price(USD): 1740.0
GB 3377-1982 Multi frequency register signalling system for telephone antomatic switching network 
  Issued on: 1982-12-29   Translation Price(USD): 270.0
GB/T 28505-2012 Technical specification of national No.7 signalling system 2 Mbit/s high speed link 
  Issued on: 2012-6-29   Translation 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   Translation Price(USD): 1050.0
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   Translation 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   Translation Price(USD): 340.0
YD/T 1193.3-2002 Bearer independent call control specification - Part3 : procedure of BICC 
  Issued on: 2002-6-21   Translation Price(USD): 900.0
GB 3376-1982 Inband pulsing single frequency line signalling system for telephone automatic switching network 
  Issued on: 1982-12-29   Translation Price(USD): 224.0
SL 417-2016  
  Issued on: 2016-07-22   Translation Price(USD): 300.0
GB/T 14401-1993 between mobile station and base station and mobile services switching centre in public land mobile communication network at 450MHz band 
  Issued on: 1993-5-17   Translation Price(USD): 450.0
GB/T 28524-2012 Media Gateway Control Protocol(MGCP) 
  Issued on: 2012-6-29   Translation Price(USD): 1260.0
GF 018-1995 Numbering for automatic telephone in public phone network 
  Issued on: 1996-01-01   Translation Price(USD): 190.0
GB 3971.2-1983 Interoffice junction digital line signalling system for telephone automatic switching network 
  Issued on: 1983-12-15   Translation Price(USD): 150.0
GB/T 28506-2012 Technical specification for national No.7 signalling system—GSM mobile telephone user part (MTUP) 
  Issued on: 2012-6-29   Translation Price(USD): 990.0
GB 3380-1982 Ringing and tone for telephone automatic switching network 
  Issued on: 1982-12-29   Translation Price(USD): 90.0
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