centrex

基本解释

A variation of a traditional Centrex telephony system is called IP Centrex.
傳統的Centrex電話系統的另一種形式稱爲IP Centrex。
Centrex frequently uses analog telephone lines for the connections to a business or organization.
Centrex經常使用模擬電話線路爲公司或組織提供電話連接。
Centrex uses the telephone company's central office exchange to route internal calls back to an extension.
Centrex使用電話公司的中央辦公室交換機將內部電話又路由廻到分機號碼上。
Exchange 2007 Unified Messaging may require that you install, deploy, and maintain IP gateways to work with IP Centrex.
Exchange 2007統一消息可能需要您安裝、部署和維護IP網關,這樣該消息才能與IP Centrex一起使用。
Centrex telephony systems are sometimes used by larger organizations, but are most frequently found in government, public, and private organizations.
大型組織有時也使用Centrex電話系統,但多數是在政府、公共部門和私有組織中使用。