翻訳と辞書
Words near each other
・ integer specbaseratio
・ integer specrate
・ integer specratio
・ integrated circuit
・ integrated database management system
・ integrated development environment
・ integrated drive electronics
・ integrated information technology
・ integrated modelling support environment
・ integrated project support environment
・ integrated services digital network
・ integrated systems architecture
・ integrated systems laboratory
・ integration
・ integration testing
・ integrity constraint
・ intel
・ intel 4004
・ intel 4040
・ intel 486


Dictionary Lists
翻訳と辞書 辞書検索 [ 開発暫定版 ]
スポンサード リンク

Integrated Services Digital Network : FOLDOC
Integrated Services Digital Network
(ISDN) A set of communications standards allowing a single wire or optical fibre to carry voice, digital network services and video. ISDN is intended to eventually replace the plain old telephone system.
ISDN was first published as one of the 1984 ITU-T Red Book recommendations. The 1988 Blue Book recommendations added many new features. ISDN uses mostly existing Public Switched Telephone Network (PSTN) switches and wiring, upgraded so that the basic "call" is a 64 kilobits per second, all-digital end-to-end channel. Packet and frame modes are also provided in some places.
There are different kinds of ISDN connection of varying bandwidth (see DS level):
DS0 = 1 channel PCM at 64 kbps
T1 or DS1 = 24 channels PCM at 1.54 Mbps
T1C or DS1C = 48 channels PCM at 3.15 Mbps
T2 or DS2 = 96 channels PCM at 6.31 Mbps
T3 or DS3 = 672 channels PCM at 44.736 Mbps


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.