【正文】 OTD) are applicable and required for all product categories. TL 9000 質(zhì)量管理體系測(cè)量手冊(cè) A15 Table A1. Product Category Definitions Category Code Category: Definition: Examples: fax machines, and ) Terminal Equipment Equipment connected to the work demarcation point which provides a service to the subscriber. Terminal equipment includes telephone sets, whether wireline, cordless, cellular, PCS, or other voice terminals, fax machines, answering machines, modems, data service units (DSUs), or ISDN terminal adapters. Voice Terminals Conventional, wireless, cellular, PCS, or other voice terminal equipment. Wireline Telephone Sets Telephone sets connected to conventional wireline (POTS) circuits. ? POTS telephone sets ? Cordless telephones Wireless Subscriber User Terminals The subscriber user terminal made to transmit and receive voice and/or data munication using Telemunication Infrastructure equipment not requiring hard lines as a means of transport. User terminals may be of any functional technology available for public use. ? Wireless single mode user terminal ? Wireless mobile user terminal ? Wireless stationary user terminal ? Wireless multimode user terminal ? Wireless multipurpose user terminal ? Wireless Global user terminal Fax equipment Equipment for sending or receiving facsimile (fax) over conventional voicegrade lines. Data Modems Equipment for digital munications over voicegrade lines Digital Data Service Units Equipment for the interconnection of data terminal equipment (DTE) with a digital munications service. Such equipment typically provides a work interface and one or more DTE interfaces and may be configurable. ? DDS CSU / DSU ? ISDN CSU / DSU ? IDSN terminal adapter ? T1 CSU DSU Automatic Call Equipment for the distribution of ining calls to any。 OTD) are applicable and required for all product categories. TL 9000 質(zhì)量管理體系測(cè)量手冊(cè) A13 Table A1. Product Category Definitions Category Code Category: Definition: Examples: Synchronization Equipment for operating digital systems at a mon clock rate (frequency synchronization). This category includes primary reference sources and other timing signal generators that produce a timing signal traceable to UTC. ? Stratum 1,2, 3E domestic, TNC, LNC and Type 1 International ? GPS timing receivers, cesium, loran, or CDMA RF pilot timing reference generators. General Purpose Computers A category reserved for puter plexes (one or more interconnected machines) that perform general business functions for a TSP but which do not provide any telephony transmission or storage service to subscribers or other TSP customers, or which may provide such services, but are not sold to the service provider as part of a system designed exclusively for that purpose. The purposes to which such machines may be put include but are not limited to: ? Accounting systems ? Billing systems ? Legal systems ? Ordering systems ? Business Information systems ? HR functions ? Engineering and support functions ? Marketing and Sales functions ? Terminals ? PCs ? Workstations ? Mini, mid, mainframes Power Systems Equipment for the provision of power to work equipment. Power systems provide two (2) principal functions: the conversion of the mercial AC power source to DC voltages required by the work equipment and the generation and distribution of emergency (reserve) power when the mercial power is interrupted. This category also includes the ringing plant, a redundant plant which supplies the ringing voltage, frequency, tones, and interrupter patterns ? AC rectifiers/battery chargers ? Battery systems ? Uninterruptable Power Supplies (UPS) ? DC to AC inverters ? DC to DC bulk converters 企業(yè) () (大量管理資料下載 ) Note 1:Product Categories listed in RED and italicized will be used for possible Data Aggregation only. Metrics must be submitted per the lower Product Category listing. Note 2:Remember that the following Metrics (FRT, OFR amp。t bring down customer circuits。 Maintenance Equipment, systems, and services for the management, upkeep, diagnosis and repair of the munications work. Test Systems Equipment to support testing of the work. This category includes permanently installed equipment used to provide a centralized test capability or local test access, as opposed to portable equipment, as might be carried by a craftsperson. Test Access Equipment Equipment to provide test access to transmission circuits. Test access equipment is in series with the customer circuit at all times and therefore directly affects the circuit reliability. This equipment is designed with transmission equipment issues in mind. This equipment may have analog and perhaps a variety of digital (., T1, E1) types. Test Equipment, Embedded Equipment to perform tests on transmission circuits. This equipment is designed with transmission equipment issues in mind. Test equipment is 企業(yè) () (大量管理資料下載 ) Note 1:Product Categories listed in RED and italicized will be used for possible Data Aggregation only. Metrics must be submitted per the lower Product Category listing. Note 2:Remember that the following Metrics (FRT, OFR amp。 OTD) are applicable and required for all product categories. TL 9000 質(zhì)量管理體系測(cè)量手冊(cè) A10 Table A1. Product Category Definitions Category Code Category: Definition: Examples: There is an analogtodigital (A/D) conversion of analog inputs to the DLC and these signals, which are carried digitally within the DLC, undergo a digitaltoanalog (D / A) conversion when output at the COT or RT. The transmission facility used by a loop carrier may be metallic cable pairs, repeated metallic cable pairs, or optical fibers. Line Te