共找到 208 條與 數(shù)字通信設(shè)備 相關(guān)的標(biāo)準(zhǔn),共 14 頁
本標(biāo)準(zhǔn)規(guī)定了34368kbit/s采用正碼速調(diào)整的三次群數(shù)字復(fù)用設(shè)備的技術(shù)要求和測試方法。 本標(biāo)準(zhǔn)適用于數(shù)字傳輸系統(tǒng)中使用的工作在34368kbit/s采用正碼速調(diào)整的三次群數(shù)字復(fù)用設(shè)備。
Performance and test methods of the thirdorder digitalltiplex equipment operating at 3468 kbit/sand using poive justification
本標(biāo)準(zhǔn)規(guī)定了同軸電纜數(shù)字線路系統(tǒng)進網(wǎng)時必須具備與統(tǒng)一的基本性能和接口特性要求。 本標(biāo)準(zhǔn)主要適用于在0.7/2.9、1.2/4.4、2.6/9.5mm同軸電纜上傳輸2048kbit/s系列信號的數(shù)字線路系統(tǒng)。
Performance requirements for digital line systems on coaxial pair cables used in telecommunication network
本標(biāo)準(zhǔn)規(guī)定了對稱電纜數(shù)字線路系統(tǒng)進網(wǎng)時必須具備與統(tǒng)一的基本性能和接口特性要求。 本標(biāo)準(zhǔn)主要適用于對稱電纜線對上傳輸2048kbit/s系列信號的數(shù)字線路系統(tǒng)。
Performance requirements for digital line systems on symmetric pair cables used in telecommunication network
本標(biāo)準(zhǔn)規(guī)定了電纜數(shù)字段在電信網(wǎng)中使用時必須達到的基本性能和接口特性要求。這些要求是針對假設(shè)參考數(shù)字段提出的。 本標(biāo)準(zhǔn)適用于傳輸2048kbit/s系列信號的各種電纜數(shù)字線路系統(tǒng)組成的數(shù)字段。
Performance requirements for digital sections of metallic cables used in telecommunication network
本標(biāo)準(zhǔn)規(guī)定了60路PCM/ADPCM編碼轉(zhuǎn)換設(shè)備的接口特性、信令傳輸、定時同步、監(jiān)測、維護運用以及其它實現(xiàn)60路編碼轉(zhuǎn)換設(shè)備所特有的技術(shù)要求。 本標(biāo)準(zhǔn)適用于公用網(wǎng)中使用的60路PCM/ADPCM編碼轉(zhuǎn)換設(shè)備。專用網(wǎng)中使用的60路PCM/ADPCM編碼轉(zhuǎn)換設(shè)備也應(yīng)參照采用本標(biāo)準(zhǔn)。
Technical requirements for a 60-channel PCM/ADPCM transcoder equipment
復(fù)用轉(zhuǎn)換設(shè)備(TMUX)是將頻分復(fù)用信號轉(zhuǎn)換為相應(yīng)的PCM復(fù)用信號,并在相反傳輸方向完成反變換功能的設(shè)備,根據(jù)其模擬接口是對應(yīng)FDM的基礎(chǔ)超群還是基礎(chǔ)基群可分為s型與P型兩類。 本標(biāo)準(zhǔn)規(guī)定了60路復(fù)用轉(zhuǎn)換設(shè)備的接口特性、通路性能、定時同步方式、信令變換要求及維護運用等方面的技術(shù)條件。 本標(biāo)準(zhǔn)適用于在公用網(wǎng)和專用網(wǎng)上運用的以各種方式實現(xiàn)的S型和P型60路復(fù)用轉(zhuǎn)換設(shè)備。
Technical requirements for TDM/FDM 60-channel transmultiplexing equipment
本標(biāo)準(zhǔn)適用于在載波話路上固定安裝的75波特、報路間隔180Hz調(diào)頻音頻電報機(以下簡稱電報機)。
Specification and measuring method of frequency-modulated voice-frequency telegraph set for a modulation rate of 75 Bauds with channels spaced at 180 Hz
本標(biāo)準(zhǔn)適用于普通共電、自動電話機,可作為設(shè)計、生產(chǎn)、使用部門鑒定、仲裁產(chǎn)品質(zhì)量的依據(jù)。
Technical requirements for common battery telephones and automatic telephones
本標(biāo)準(zhǔn)適用于普通磁石式電話機,可作為設(shè)計、生產(chǎn)、使用部門鑒定,仲裁產(chǎn)品質(zhì)量的依據(jù).本標(biāo)準(zhǔn)未包括的特殊要求,在產(chǎn)品技術(shù)條件中規(guī)定。
Technical requirements for magnet/ telephone
Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Optimal media routeing within the IP Multimedia Subsystem (IMS); Stage 3 (V14.0.0; 3GPP TS 29.079 version 14.0.0 Release 14)
LTE; Evolved Universal Terrestrial Radio Access (E-UTRA); FDD repeater radio transmission and reception (V14.0.0; 3GPP TS 36.106 version 14.0.0 Release 14)
LTE; Evolved Universal Terrestrial Radio Access (E-UTRA); FDD repeater conformance testing (V14.0.0; 3GPP TS 36.143 version 14.0.0 Release 14)
Technical characteristics and methods of measurement for equipment for generation@ transmission and reception of Digital Selective Calling (DSC) in the maritime MF@ MF/HF and/or VHF mobile service; Part 3: Class D DSC (V1.2.1)
Technical characteristics and methods of measurement for equipment for generation@ transmission and reception of Digital Selective Calling (DSC) in the maritime MF@ MF/HF and/or VHF mobile service; Part 5: Handheld VHF Class H DSC (V1.2.1)
Technical characteristics and methods of measurement for equipment for generation@ transmission and reception of Digital Selective Calling (DSC) in the maritime MF@ MF/HF and/or VHF mobile service; Part 4: Class E DSC (V1.2.1)
Technical characteristics and methods of measurement for equipment for generation@ transmission and reception of Digital Selective Calling (DSC) in the maritime MF@ MF/HF and/or VHF mobile service; Part 6: Class M DSC (V1.1.1)
Technical characteristics and methods of measurement for equipment for generation@ transmission and reception of Digital Selective Calling (DSC) in the maritime MF@ MF/HF and/or VHF mobile service; Part 2: Class A/B DSC (V1.4.1)
Technical characteristics and methods of measurement for equipment for generation@ transmission and reception of Digital Selective Calling (DSC) in the maritime MF@ MF/HF and/or VHF mobile service; Part 1: Common requirements (V1.4.2)
IMT cellular networks; Harmonised Standard covering the essential requirements of article 3.2 of Directive 2014/53/EU; Part 15: Evolved Universal Terrestrial Radio Access (E-UTRA FDD) Repeaters (V11.1.2)
IMT cellular networks; Harmonised Standard covering the essential requirements of article 3.2 of the Directive 2014/53/EU; Part 11: CDMA Direct Spread (UTRA FDD) Repeaters (V11.1.2)
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