翻訳と辞書 Words near each other ・ Prime circle ・ Prime Circle discography ・ Prime College ・ Prime Computer ・ Prime constant ・ Prime Country ・ Prime Cut ・ Prime Cuts ・ Prime Cuts & Glazed Donuts ・ Prime Cuts (Jordan Rudess album) ・ Prime Cuts (Peter Lang album) ・ Prime Cuts (Shadow Gallery album) ・ Primary pseudoperfect number ・ Primary pulmonary coccidioidomycosis ・ Primary pulmonary histoplasmosis ・ Primary Rate Interface ・ Primary research ・ Primary Reserve ・ Primary residence ・ Primary school ・ Primary School Evaluation Test (Malaysia) ・ Primary School Leaving Examination ・ Primary school sadpur ・ Primary schools in Angus ・ Primary schools in Banbury ・ Primary schools in Dacorum ・ Primary schools in Hertsmere ・ Primary schools in Singapore ・ Primary schools in Three Rivers ・ Primary schools in Watford Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Primary Rate Interface ： ウィキペディア英語版 Primary Rate Interface The Primary Rate Interface (PRI) is a telecommunications interface standard used on an Integrated Services Digital Network (ISDN) for carrying multiple DS0 voice and data transmissions between the network and a user. PRI is the standard for providing telecommunication services to offices. It is based on the T-carrier (T1) line in the US and Canada, and the E-carrier (E1) line in Europe. The T1 line consists of 24 channels, while an E1 has 32. PRI provides a varying number of channels depending on the standards in the country of implementation. In North America and Japan it consists of 23xB (B channels (bearer channels)) and 1xD (D channel (delta channel)) (23 64-kbit/s digital channels + 1 64-kbit/s signaling/control channel) on a T1 (1.544 Mbit/s). In Europe and Australia it is 30xB + 2xD on an E1 2.048 Mbit/s. One timeslot on the E1 is used for synchronization purposes and is not considered to be a B or D channel. == Fractional T1 == Fewer active B channels (also called bearer channels) can be used for a fractional T1. Bearer channels may also be known as user channels. More channels can be used with more T1s, within certain design limits.〔(【引用サイトリンク】url=http://grok.lsu.edu/Article.aspx?articleId=3467 )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Primary Rate Interface」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.