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Standard No.	Title	Price(USD)	Delivery	Status	Add to Cart
GB/T 28499.1-2012	Technical requirement for IP video terminal equipment—Part 1:terminal based on ITU-T H.323	$450.00	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	$1740.00	via email in 1~3 business day	valid,,2012-10-1
GB/T 28501-2012	Technical requirements of telephony routing over IP(TRIP)	$660.00	via email in 1~3 business day	valid,,2012-10-1
GB/T 28502-2012	Technical requirement of interworking between No.7 signalling and IP	$600.00	via email in 1~3 business day	valid,,2012-10-1
GB/T 28503-2012	Technical requirements of adaptation layer of No.7 signalling interworking with IP MTP2 user adaptation layer	$810.00	via email in 1~3 business day	valid,,2012-10-1
GB/T 28505-2012	Technical specification of national No.7 signalling system 2 Mbit/s high speed link	$330.00	via email in 1~3 business day	valid,,2012-10-1
GB/T 28506-2012	Technical specification for national No.7 signalling system—GSM mobile telephone user part (MTUP)	$990.00	via email in 1~3 business day	valid,,2012-10-1
GB/T 28508-2012	General technical requirements for broadband customer network based on telecommunication network	$390.00	via email in 1~3 business day	valid,,2012-10-1
GB/T 28509-2012	Ultrafine coaxial cables with insulation diameter below 1 mm and cable assemblies	$450.00	via email in 1~3 business day	valid,,2012-10-1
GB/T 28510-2012	Technical specification of stream control transmission protocol	$990.00	via email in 1~3 business day	valid,,2012-10-1
GB/T 28512-2012	Diameter base protocol for IP network	$1200.00	via email in 1~3 business day	valid,,2012-10-1
GB/T 28515.1-2012	Test specifications for automatically switched optical network(ASON)—Part 1:Test specifications for SDH-based ASON	$1620.00	via email in 1~3 business day	valid,,2012-10-1
GB/T 28515.2-2021	Test method for automatically switched optical network(ASON)—Part 2:OTN-based ASON	$990.00	via email in 1~10 business day	valid,,2021-8-1
GB/T 28516-2012	Technical requirement for anti-spam Email gateway	$160.00	via email in 1~3 business day	valid,,2012-10-1
GB/T 28524-2012	Media Gateway Control Protocol(MGCP)	$1260.00	via email in 1~5 business day	valid,,2012-10-1
GB/T 2886-1992	TECHNICAL REOUIREMENTS FOR GROUP 2 DOCUMENT FACSIMILE APARATUS USED IN PUBLIC TELEPHONE NETWORK	$410.00	via email in 1~3 business day	abolished2005-10-14 ,,1993-8-1
GB/T 29198-2012	Technical requirements of adaptation layer of No.7 signalling interworking with IP—MTP2 peer-to-peer adaptation layer	$480.00	via email in 1~3 business day	valid,,2013-6-1
GB/T 29200-2012	Test method for public telecommunication network equipments security—Calling party number information	$430.00	via email in 1~3 business day	valid,,2013-6-1
GB/T 29228-2012	Technical requirements for public telecommunication network equipments security—Calling party number information	$210.00	via email in 1~3 business day	valid,,2013-6-1
GB/T 29234-2012	Security technical requirements for broadband customer network based on telecommunication network	$270.00	via email in 1~3 business day	valid,,2013-6-1
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