外部交换局

（重定向自FXO）

外部交换局（Foreign Exchange Office, FXO）是一种电话模拟分机线，可模拟PABX，进行模拟信号传递，包含电话铃声，但无法传递数据。

FXO 接口可以连接电脑与网络设备，并允许直接与 POTS 系统沟通。FXO有许多闸道，例如VoIP以及PSTN。

单词	FXO
释义	FXO 中文百科外部交换局（重定向自FXO）外部交换局（Foreign Exchange Office, FXO）是一种电话模拟分机线，可模拟PABX，进行模拟信号传递，包含电话铃声，但无法传递数据。 FXO 接口可以连接电脑与网络设备，并允许直接与 POTS 系统沟通。FXO有许多闸道，例如VoIP以及PSTN。英语百科 Foreign exchange service (telecommunications) （重定向自FXO） Foreign exchange service (FX) is a telecommunications network service in which a telephone in a given exchange area is connected, via a private line (as opposed to a trunk line), to a telephone exchange or central office in another foreign exchange, rather than the local exchange area where the device is located.
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FXO