| 摘要 |
A communication system that is configured to communicate with more than one call manager systems, the communication system comprising a routing system configured to receive signaling for a call wherein the signaling indicates a called number including an international country code, and process the international country code to transfer a first query including the international country code, and the communication system further comprising a call processing system configured to receive the first query, process the international country code to select one of the call manager systems from the more than one call manager systems, transfer a second query to the one call manager system, and process a response from the one call manager system to transfer a routing instruction for the call to the routing system.
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