On a PBX system, they may be used for other kinds of signaling.

PB X系统，他们可能被用于其他类型的信号。

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If this service is used on a PBX system, please call 30667676 as the access number for IDD calls.

若本服务使用于集团电话系统（PBX），拨打长途时请使用30667676作为接入号码，听到欢迎词再输入长途号码。

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Therefore IP PBX system characteristic and its application technology are worth everybody conducting the research and the discussion.

为此IP PB X系统的特点及其应用技术值得大家进行研究及探讨。

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Using software you install on your PC, you can take complete control over all the phones in the house and turn your internal phone network into a system like a private branch exchange (PBX) not unlike what you might find at the office.

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