| 书目名称 | ISDN - The Integrated Services Digital Network | | 副标题 | Concepts, Methods, S | | 编辑 | Peter Bocker | | 视频video | | | 图书封面 |  | | 描述 | The present state of development of communication technology is characterized by two features, namely the digital representation of all signals transrnitted and processed, irrespective of information type - voice, text, data or images - and the integration of systems and services, this integration only being completely possible using digital technology. The boundaries between switching and transmission are shifting, and functions are being redefined and redistributed between terminals and communication networks. Multiservice terminals - unlike telephones, teleprinters, video data terminals - are designed to handle more than one information type. Lastly, the communication network allows voice, text, data and video information to be transmitted on the same circuit; the user obtains access to this network via a non dedicated "communication socket". The essential features of this Integrated Services Digital Network (ISDN) have been standardized over the last eight years by experts from all over the world under the aegis of the CCITT 1), the international standardizing body of the carriers of public communication networks. All the leading network carriers are working towards ISDN imple | | 出版日期 | Book 19881st edition | | 关键词 | Digital Switching; ISDN; Kommunikation; Standard; Standards; circuit; communication; communication network; | | 版次 | 1 | | doi | https://doi.org/10.1007/978-3-662-08036-8 | | isbn_ebook | 978-3-662-08036-8 | | copyright | Springer-Verlag Berlin Heidelberg 1988 |
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发表于 2025-3-21 18:06:28
