E

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[範例] CTV(Chinese Translation Version)，中文譯稱。一段中文或英文的簡短說明:-:知識分類。====================================================

E-AGCH(E-DCH Absolute Grant CHannel)，。
The E-DCH Absolute Grant Channel is a fixed rate (30 kbps, Spreading Factor = 256) downlink physical channel carrying the uplink E-DCH absolute grant.
Ref: [-] 3GTS 25.211

Erlang(-)，。無因次單位。由丹麥數學家A.K.Erlang所命名。Erlang is a unit of telecommunications traffic measurement. Strictly speaking, an Erlang represents the continuous use of one voice path. In practice, it is used to describe the total traffic volume of one hour.

例如，某小型公司(無論多少人)，假設一小時中，總共或撥或接了30通電話，每通都講了5分鐘，請問如何計算此Erlang?
此小時的話務量 = 撥接通數 x 通話時間 = 30 x 5 = 150 (Call-minutes, Cm)= 150 / 60 = 2.5 (Call-hours, Ch)
Traffic figure = 2.5 Erlangs
意即，如果此公司只有一條線，則此線路必須連續忙碌2.5小時，才能滿足此要求，但這是不可能的任務(因為事件發生在一小時以內)，所以此公司至少需要三條線，才能讓Erlang小於1 Ch。

Erlang traffic measurements are made in order to help telecommunications network designers understand traffic patterns within their voice networks. This is essential if they are to successfully design their network topology and establish the necessary trunk group sizes.

Erlang traffic measurements or estimates can be used to work out how many lines are required between a telephone system and a central office (PSTN exchange lines), or between multiple network locations.:-:話務量單位。
Ref:
[-] http://www.erlang.com/whatis.html

EVDO (EVolution-Data Optimized), cdma的數據優化演進. 1x EV-DO 是一種專為高速分組數據傳送而優化設計的CDMA2000 空中界面技術，已經發展出Release 0 和Revision A 等兩個版本。有了EVDO之後, cdma2000的數據服務才算達到3G技術的標準(1x原本只有153.6kbps的最高數據傳輸速率).

EVDO的別名:1xEVDO, DO, EV-DO, HDR, 或HRPD都是文件中常見的別名, 其中最有意思的是EVDO Rev.A的版本常被暱稱為DORA, 與美國卡通人物的名稱一樣 (請看Dora the Explorer). 筆者則認為如果以DORAemon在日本與台灣應該都能造成旋風.

080716r3版本