Switching system and routing method
First Claim
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1. A switching system for accommodating a plurality of subscriber devices, and multiple networks, and transmitting a call setup request received from a subscriber device of the plurality of subscriber devices to a network among the multiple networks, the switching system comprising:
- a switch receiving a call setup request having an information element from the subscriber device;
a call control unit collating the information element and station data, and extracting, from the station data, a network identification information that corresponds to the information element; and
a routing control unit selecting, based on the network identification information, a network from the multiple networks which include at least two different routing methods.
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Abstract
An switching system for routing a call setup request received from a subscriber device to a desired network among multiple networks having two or more different routing methods, based on information included in the call setup request.
29 Citations
13 Claims
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1. A switching system for accommodating a plurality of subscriber devices, and multiple networks, and transmitting a call setup request received from a subscriber device of the plurality of subscriber devices to a network among the multiple networks, the switching system comprising:
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a switch receiving a call setup request having an information element from the subscriber device;
a call control unit collating the information element and station data, and extracting, from the station data, a network identification information that corresponds to the information element; and
a routing control unit selecting, based on the network identification information, a network from the multiple networks which include at least two different routing methods. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A switching system for accommodating a plurality of subscriber devices, and multiple networks, and transmitting a call setup request received from a subscriber device of the plurality of subscriber devices to a network among the multiple networks, the switching system comprising:
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a switch receiving a call setup request having an information element from the subscriber device;
a call control unit collating station data and the information element, and extracting network identification information that corresponds to the information element; and
a routing control unit selecting, based on a state of use of each of the multiple networks, a network among the multiple networks which include at least two different routing methods. - View Dependent Claims (8, 9, 10, 11)
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12. A routing method for a switching system that accommodates a subscriber device and multiple networks, comprising the steps of:
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receiving a call setup request having an information element from said subscriber device;
selecting a network identifier from network identifiers stored in station data, based on a value of the information element;
selecting a network among multiple networks based on a value of the network identifier; and
transmitting the call setup request to the network. - View Dependent Claims (13)
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Specification