共找到 922 条与 标准化、质量管理 相关的标准,共 62 页
This Recommendation is the baseline specification for the provision of an interaction channel for local multipoint distribution systems (LMDS) networks as a digital broadcasting delivery medium. It makes provision for bidirectional data over wireless access for interactive services.
Interaction channel using local multipoint distribution systems
IS-728 specifies an Intersystem Link Protocol (ISLP) for circuit-mode data services. These data services include Asynchronous Data (ADS) and Group-3 Fax as specified in TIA/EIA/IS-99 and TIA/EIA/IS-135. The ISLP adapts between air-interface data rates and higher-speed intersystem rates. The ISLP may be used between a serving system and an anchor system, possibly through one or more tandem systems (see ANSI/TIA/EIA-41.1 for details on "serving system", "anchor system", and "tandem system").
Intersystem Link Protocol (ISLP) [Superseded: TIA TIA/EIA/IS-728]
From Transmission disabled state a TxE command may also result in a transition toward the Initial phase state.
Technical characteristics of high density fixed-satellite service earth stations transmitting towards geostationary fixed-satellite service space stations in the 30 GHz range*
The ITU-R Radiocommunication Assembly, considering a) that Recommendation ITU-R F.1397, based on ITU-T Recommendations G.826 and G.828, specifies error performance objectives for real digital fixed wireless systems (FWS) links in the international portion of an hypothetical reference path (HRP); b) that Recommendation ITU-R F.1491, based on ITU-T Recommendations G.826 and G.828, specifies error performance objectives for real digital FWS links in the national portion of an HRP; c) that Recommendation ITU-R F.1241 specifies allowable aggregate performance degradation due to interference from other services sharing the same bands on a primary basis with digital FWS in the international portion of an HRP; d) that Recommendation ITU-R F.1398 specifies performance degradation due to interference from other services sharing the same frequency bands on a primary basis with digital FWS operating at or above the primary rate and which may form part of the national portion of an HRP; e) that there is a need to establish, based on Recommendations ITU-R F.1397 and ITU-R F.1491, the allowable aggregate performance degradation due to interference from other co-primary services sharing the same bands with real FWS links in the international and national portions of an HRP.
Performance degradation due to interference from other services sharing the same frequency bands on a co-primary basis with real digital fixed wireless systems used in the international and national portions of a 27 500 km hypothetical reference path at o
This Annex provides typical technical characteristics for the FS using HAPS in the frequency range of 18-32 GHz focusing on the bands 27.5-28.35 GHz and 31-31.3 GHz, which may be used in the relevant studies.
Technical and operational characteristics for the fixed service using high altitude platform stations in the bands 27.5-28.35 GHz and 31-31.3 GHz
that the band 37-40 GHz is allocated to the fixed service (FS) on a primary basis
Deployment characteristics of fixed service systems in the band 37-40 GHz for use in sharing studies
that according to Article 5 of the Radio Regulations (RR) the frequency bands 406.1- 430 MHz and 440-450 MHz are allocated to the fixed service (FS) on a worldwide basis
Radio-frequency channel arrangement for digital fixed wireless systems operating in the frequency band 406.1-450 MHz
This Recommendation specifies error performance events, parameters and objectives of a N ×64 kbit/s circuit-switched digital connection (1 ≤N ≤24 or ≤31 respectively) used for voice traffic or as a "Bearer Channel" for data-type services. The application of this Recommendation is limited to international digital connections, operating below the primary rate of the digital hierarchy, that use equipment designed prior to the adoption of revised ITU-T Rec.G.826 on 14 December 2002.
Error performance of an international digital connection operating at a bit rate below the primary rate and forming part of an Integrated Services Digital Network
This Recommendation defines end-to-end error performance parameters and objectives for international digital paths which operate at or above the primary rate and for international digital connections which operate below the primary rate of the digital hierarchy. The objectives given are independent of the physical network supporting the path or connection.
End-to-end error performance parameters and objectives for international, constant bit-rate digital paths and connections
This Recommendation specifies error performance events, parameters and objectives of a N ×64 kbit/s circuit-switched digital connection (1 ≤N ≤24 or ≤31 respectively) used for voice traffic or as a "Bearer Channel" for data-type services. The application of this Recommendation is limited to international digital connections, operating below the primary rate of the digital hierarchy, that use equipment designed prior to the adoption of revised ITU-T Rec.G.826 on 14 December 2002.
Error performance of an international digital connection operating at a bit rate below the primary rate and forming part of an Integrated Services Digital Network
The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications.
Minimizing collection charges on inter-African calls SERIES D: GENERAL TARIFF PRINCIPLES Recommendations for regional application Recommendations applicable to the African Region Study Group 3
This Recommendation defines end-to-end error performance parameters and objectives for international digital paths which operate at or above the primary rate and for international digital connections which operate below the primary rate of the digital hierarchy. The objectives given are independent of the physical network supporting the path or connection.
End-to-end error performance parameters and objectives for international, constant bit-rate digital paths and connections
To facilitate accounting rate negotiations and ensure that they take place in a healthy atmosphere, Study Group 3 developed non-binding guidelines based on serveral principles to be observed.
Accounting Rate Principles for the International Telephone Service Amendment 1: New Appendix to Annex C: Guidelines Series D: General Tariff Principles General Tariff Principles - Charging and Accounting in the International Telephone Service Study Group
La Recommandation D.602 R de l'UIT-T, élaborée par la Commission d'études 3 (2001-2004) de l'UIT-T, a été approuvée le 13 décembre 2002 selon la procédure définie dans la Résolution 1 de l'AMNT.
Application of the "sender pays transit" principle in transit relations
La Recommandation D.602 R de l'UIT-T, élaborée par la Commission d'études 3 (2001-2004) de l'UIT-T, a été approuvée le 13 décembre 2002 selon la procédure définie dans la Résolution 1 de l'AMNT.
Application of the "sender pays transit" principle in transit relations
An equipment room is considered distinct from a telecommunications room because of the nature or complexity of the equipment.
Commercial Building Grounding (Earthing) and Bonding Requirements for Telecommunications [Superseded: TIA TIA/EIA-607]
Digital Cellular Telecommunications System (Phase 2+); GSM Release 4 Specifications 3GPP TS 41.102 Version 4.2.0 Release 4
Digital Cellular Telecommunications System (Phase 2+); GSM Release 1999 Specifications 3GPP TS 01.01 Version 8.3.0 Release 1999
Universal Mobile Telecommunications System (UMTS); 3rd Generation Mobile System Release 4 Specifications 3GPP TS 21.102 Version 4.2.0 Release 4
This Recommendation describes the principles, criteria and procedures for the assignment and reclamation of resources within a shared E.164 Country Code for Groups of Countries. These shared Country Codes coexist with all other E.164-based Country Codes assigned by ITU-T. The resource of the shared Country Code consists of a Country Code and a Group Identification Code (CC + GIC) and provides the capability for a Group of Countries to provide telecommunication services within the Group of Countries. TSB is responsible for the assignment of the CC + GIC.
Principles, criteria and procedures for the assignment and reclamation of E.164 country codes and associated identification codes for groups of countries
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