Information technology - Telecommunications and information exchange between systems - Corporate tel...
This International Standard specifies signalling interworking between "QSIG" and "H.323" in support of the call transfer
supplementary services within a Corporate telecommunication Network (CN).
"QSIG" is a signalling protocol that operates at the Q reference point between Private Integrated Services eXchanges (PINX)
within a Private Integrated Services Network (PISN…
Information technology — Telecommunications and information exchange between systems — Corporate tel...
This International Standard specifies signalling interworking between "QSIG" and "H.323" in support of the call transfer
supplementary services within a Corporate telecommunication Network (CN).
"QSIG" is a signalling protocol that operates at the Q reference point between Private Integrated Services eXchanges (PINX)
within a Private Integrated Services Network (PISN…
Flexible insulating sleeving - Part 3: Specifications for individual types of sleeving - Sheet 246: ...
Defines requirements for dual wall, not flame retarded, heat shrinkable, polyolefin sleeving. This sleeving has been found suitable for use up to 80 °C.
The sleeving consists of an outer layer made of a semi-rigid cross-linked material.
The inner layer is a substantially non-cross-linked polyolefin that flows and fuses during the shrinkage process to provide a seal.
It is normally offered for…
Crystalline Silicon Terrestrial Photovoltaic (PV) Modules - Design Qualification and Type Approval
This National Standard of Canada is equivalent to International Standard CEI/IEC 1215:1993 (first edition, 1993-04)
1 Scope and object
This International Standard lays down requirements for the design qualification and type approval of terrestrial photovoltaic modules suitable for long-term operation in general open-air climates, as defined in IEC 721-2-1. It applies only to crystalline…
Optical fibres - Part 1-51: Measurement methods and test procedures - Dry heat
Defines a test that determines the suitability of optical fibres (types A1a to A1d and B1 to B4) to withstand high temperatures (dry heat) in actual use, storage and/or transport. The test permits the observation of effects of high temperatures over a given period.
Plastics — Unsaturated-polyester resins — Measurement of gel time at ambient temperature
This International Standard specifies methods of measuring, under defined conditions, the gel time at ambient
temperature (i.e. within the range 18 °C to 30 °C) of unsaturated-polyester resins.
The referee temperature, if needed, is 25 °C.
Pneumatic fluid power — Directional control valves — Measurement of shifting time
This International Standard
— specifies test procedures for measuring the shifting times of electrically- or pneumatically-operated directional
control valves and moving-part logic elements,
— establishes a definition for shifting time, and
— is intended to improve the application of pneumatic fluid power by providing users and manufacturers of
pneumatic valves with a standardized test procedure…
