ITU-T M 70-1988 GUIDING PRINCIPLES ON THE GENERAL MAINTENANCE ORGANIZATION FOR TELEPHONE - TYPE INTERNATIONAL CIRCUITS《对电话型国际电路的一般维护组织的指导原则》.pdf
《ITU-T M 70-1988 GUIDING PRINCIPLES ON THE GENERAL MAINTENANCE ORGANIZATION FOR TELEPHONE - TYPE INTERNATIONAL CIRCUITS《对电话型国际电路的一般维护组织的指导原则》.pdf》由会员分享,可在线阅读,更多相关《ITU-T M 70-1988 GUIDING PRINCIPLES ON THE GENERAL MAINTENANCE ORGANIZATION FOR TELEPHONE - TYPE INTERNATIONAL CIRCUITS《对电话型国际电路的一般维护组织的指导原则》.pdf(4页珍藏版)》请在麦多课文档分享上搜索。
1、INTERNATIONAL TELECOMMUNICATION UNION)45G134 - TELECOMMUNICATIONSTANDARDIZATION SECTOROF ITU-!).4%.!.#%G0 G0).42/$5#4)/.!.$G0G0%.%2!,G0G002).#)0,%35)$).G0G002).#)0,%3/.G0G04(%G0G0%.%2!,G0G0-!).4%.!.#%/2!.):!4)/.G0G0 in othersonly some of the functions might be combined and carried out from one locat
2、ion. The precise arrangement will dependon the Administration concerned, and the CCITT limits itself to defining the functions of the separate elements, leavingthe manner in which the elements are grouped to be determined by the Administration.1.3 If a country so desires and/or if it judges that the
3、 complexity of its international telecommunications sorequires, the international maintenance organization can be responsible for all types of circuit for which Study Group IVmakes recommendations.2 Types of circuits to be catered forThe types of circuits to be catered for are as follows:public circ
4、uits: telephone circuits, voice-frequency telegraph circuits, phototelegraph circuits, sound-programme circuits, etc.;leased circuits: telephone circuits: point-to-point and multiterminal, voice-frequency telegraph circuits, data circuits: point-to-point and multiterminal, multi-facility circuits, t
5、hat is, phototelegraph plus voice-frequency telegraph; speech plus voice-frequencytelegraph; simultaneous or alternative transmission, phototelegraph circuits, sound-programme circuits, etc.3 Maintenance organizationThe maintenance of international public telephone circuits relies upon the ability o
6、f each Administration tofulfil the various functions and responsibilities noted in the Series M Recommendations. Where such circuits are manual,as opposed to automatic, it is assumed that the Administration will select and provide the relevant elements such as thefault report point (circuit) and the
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