共找到 208 條與 數字通信設備 相關的標準,共 14 頁
本標準規定了34368kbit/s采用正碼速調整的三次群數字復用設備的技術要求和測試方法。 本標準適用于數字傳輸系統中使用的工作在34368kbit/s采用正碼速調整的三次群數字復用設備。
Performance and test methods of the thirdorder digitalltiplex equipment operating at 3468 kbit/sand using poive justification
本標準規定了同軸電纜數字線路系統進網時必須具備與統一的基本性能和接口特性要求。 本標準主要適用于在0.7/2.9、1.2/4.4、2.6/9.5mm同軸電纜上傳輸2048kbit/s系列信號的數字線路系統。
Performance requirements for digital line systems on coaxial pair cables used in telecommunication network
本標準規定了對稱電纜數字線路系統進網時必須具備與統一的基本性能和接口特性要求。 本標準主要適用于對稱電纜線對上傳輸2048kbit/s系列信號的數字線路系統。
Performance requirements for digital line systems on symmetric pair cables used in telecommunication network
本標準規定了電纜數字段在電信網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參考數字段提出的。 本標準適用于傳輸2048kbit/s系列信號的各種電纜數字線路系統組成的數字段。
Performance requirements for digital sections of metallic cables used in telecommunication network
本標準規定了60路PCM/ADPCM編碼轉換設備的接口特性、信令傳輸、定時同步、監測、維護運用以及其它實現60路編碼轉換設備所特有的技術要求。 本標準適用于公用網中使用的60路PCM/ADPCM編碼轉換設備。專用網中使用的60路PCM/ADPCM編碼轉換設備也應參照采用本標準。
Technical requirements for a 60-channel PCM/ADPCM transcoder equipment
復用轉換設備(TMUX)是將頻分復用信號轉換為相應的PCM復用信號,并在相反傳輸方向完成反變換功能的設備,根據其模擬接口是對應FDM的基礎超群還是基礎基群可分為s型與P型兩類。 本標準規定了60路復用轉換設備的接口特性、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條件。 本標準適用于在公用網和專用網上運用的以各種方式實現的S型和P型60路復用轉換設備。
Technical requirements for TDM/FDM 60-channel transmultiplexing equipment
本標準適用于在載波話路上固定安裝的75波特、報路間隔180Hz調頻音頻電報機(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
本標準適用于普通共電、自動電話機,可作為設計、生產、使用部門鑒定、仲裁產品質量的依據。
Technical requirements for common battery telephones and automatic telephones
本標準適用于普通磁石式電話機,可作為設計、生產、使用部門鑒定,仲裁產品質量的依據.本標準未包括的特殊要求,在產品技術條件中規定。
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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