NTT PROCUREMENT Technical Requirements

NTT procures high-quality products in a non-discriminatory and transparent manner, taking into account its business needs. These documents provide the basic technical requirements for the telecommunication equipment used and provided by Nippon Telegraph and Telephone Corporation (NTT) as reference material for telecommunication equipment designers and manufacturers.

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	INTERFACE FOR REALTIME OPERATING SYSTEM(IROS)1/5
	INTERFACE FOR REALTIME OPERATING SYSTEM(IROS)2/5
	INTERFACE FOR REALTIME OPERATING SYSTEM(IROS)3/5
	INTERFACE FOR REALTIME OPERATING SYSTEM(IROS)4/5
	INTERFACE FOR REALTIME OPERATING SYSTEM(IROS)5/5
	Single-fiber optic connectors Technical Requirements
	TECHNICAL REQUIREMENTS FOR CONTROL AND ACCESS PLANT NETWORK(CAPNET)
	Technical Requirements of MT connectors for Single-Mode optical fiber cables
	SINGLE-MODE OPTICAL FIBER WB TERMINATION CABLE(2nd Edition)
	SUBSCRIBER LINE CROSS(X)CONNECTING MODULE(SL-PDS TYPE OPTICAL SUBSCRIBER LINE TERMINAL OFFICE EQUIPMENT INTERFACE SECTIONS)
	PDS SYSTEM(SUBSCRIBER LINE TERMINAL/OPTICAL NETWORK UNIT)
	SINGLE-MODE OPTICAL FIBER(2nd Edition)
	CONNECTORIZED HIGH-DENSITY SINGLE-MODE OPTICAL FIBER WB CABLE(2nd Edition)
	HIGH-DENSITY SINGLE-MODE OPTICAL FIBER WB CABLE (2nd Edition)
	HIGH-DENSITY SINGLE-MODE OPTICAL FIBER WB TERMINATION CABLE (2nd Edition)
	SINGLE-MODE OPTICAL FIBER WB CABLE (2nd Edition)
	CONNECTORIZED SINGLE-MODE OPTICAL FIBER WB CABLE(2nd Edition)
	SINGLE-MODE OPTICAL FIBER SS CABLE (2nd Edition)
	4/5/6/11G-150M-LE SYSTEM(RADIO EQUIPMENT)
	FIBER TRANSPORT MODULE MULTIPLEX EQUIPMENT AND REPEATER (150Mb/s,600Mb/s)(FTM LTMUX AND FTM REP)
	TECHNICAL REQUIREMENTS FOR DIGITAL CROSS-CONNECT MODULE
	TERMINATING AND CONVERTING MODULE
	OPTICAL DIGITAL SERVICE UNIT FOR HIGH-SPEED DIGITAL LEASED CIRCUITS
	METALLIC DIGITAL SERVICE UNIT FOR HIGH-SPEED DIGITAL LEASED CIRCUITS
	DIGITAL SERVICE UNIT FOR DATA NETWORK
	HIGH-SPEED DIGITAL TRUNK SERVICE UNIT
	OPTICAL DIGITAL SERVICE UNIT FOR HIGH-SPEED DIGITAL LEASED CIRCUITS(I INTERFACE)
	FIBER OPTIC SUBSCRIBER LINE MULTIPLEX TRANSMISSION EQUIPMENT/SUPERVISORY TEST UNITS
	DIGITAL SUBSCRIBER RADIO UNIT
	MEDIUM CAPACITY RECTIFIER
	TECHNICAL REQUIREMENT FOR IMMUNITY OF TELECOMMUNICATIONS EQUIPMENT(3rd Edition) [PDF:322K]
	TECHNICAL REQUIREMENT FOR IMMUNITY OF TELECOMMUNICATIONS EQUIPMENT(3rd Edition)Errata [PDF:62K]
	ADDITIONAL REQUIREMENTS FOR THE SPIRIT SPECIFICATIONS
	SDH INTERFACE STANDARDS
	D70 DIGITAL SWITCHING SYSTEM
	D60 DIGITAL SWITCHING SYSTEM
	IU-67 TYPE OFFSET ANTENNA
	SUBSCRIBER LINE CROSS(X)CONNECTING MODULE(LXM)
	TECHNICAL REQUIREMENTS FOR POWER-SUPPLY INTERFACE OF COMMUNICATIONS EQUIPMENT [PDF:175K]
	TECHNICAL REQUIREMENTS FOR ELECTROMAGNETIC DISTURBANCE EMITTED FROM TELECOMMUNICATIONS EQUIPMENT (4th Edition) [PDF:159K]
	TECHNICAL REQUIREMENTS FOR ELECTROMAGNETIC DISTURBANCES EMITTED FROM LIGHTING EQUIPMENT INSTALLED IN TELECOMMUNICATION CENTER[PDF:87K]
	TECHNICAL REQUIREMENTS FOR RESISTIBILITY OF TELECOMMUNICATIONS EQUIPMENT TO OVERVOLTAGE AND OVERCURRENT(2nd Edition) [PDF:951K]
	TECHNICAL REQUIREMENTS FOR THE ELECTRICAL SAFETY OF EXTERNAL POWER SUPPLIES FOR ON-PREMISES INFORMATION AND COMMUNICATION EQUIPMENT(2nd Edition)[PDF:493K]
	LC_connectors_Technical_Requirements[PDF:242K]

I if you have any questions about the contents of the documents, please contact the persons responsible included in the documents.
Please contact tr@hco.ntt.co.jp

to get the documents of the technical requirements.