| 术语 | foreign exchange |
| 释义 | foreign exchange 局外交换 1. In telecommunications, a form of private line service which enables a customer to maintain a local call service in another service area. 电信技术中专用线服务的一种形式,这种服务使客户能在另一服务区域维持本地电话服务。 2. A service by which a telephone or private branch exchange (PBX) in one city, instead of being connected directly to a central office (CO) in that city, is connected directly to a CO in a distant city via a private line. To callers it appears that the telephone or PBX is located in the distant city. 一种通信业务,借此,一个城市中的电话或专用分支交换机(PBX)不是直接与该城市的中央 交换局相连,而是经过专用线直接与远地城市的中央交换局相连,对电话双方犹如电话机或 PBX位于远地城市。 |
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