释义 |
special service 特种业务 Any of variety of switched services, nonswitched services, or specialrate services that are either separate from public telephone service or contribute to certain aspects of public telephone service. Examples are PBX service, WATS, foreign exchange service; and privateline services such as circuits for burglar alarms, data, teletypewriter, and television. 各种各样的交换式业务、非交换式业务或专项收费业务。这种业务有的同公共电话业务分开,有的则是在公共电话 业务的某些方面提供方便。其例子有: 专用小交换机(PBX)业务、大区电话业务、局外 交换业务以及防盗报警、数据、电传打字和电视线路之类的专线业务。 |