| 摘要 |
A method and system for routing a call in a Voice over Internet Protocol (VoIP) gateway in which, when a caller tries making a VoIP call via a foreign exchange station (FXS), the VoIP gateway inserts a certain prefix into a relevant FXS port to allow a called gateway to identify a caller based on the prefix so that a foreign exchange office (FXO) port is allocated according to subscriber's priority.
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