Portability of non-geographic telephone numbers of intelligent network services
First Claim
1. A telecommunications network comprising a set of domains, wherein a call-originating domain included in the set of domains uses a portable directory number of an intelligent network-tee service to access a non-geographic service number database to obtain information to be included as a parameter in a routing message for routing a call made from the call-originating domain to the intelligent network-type service, and wherein the information includes an address of a node in a non-originating domain which currently handles the intelligent network-type service, the non-originating domain being included in the set of domains and the intelligent network-type service being performed by a service control function (SCF) of the non-originating domain.
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Abstract
A telecommunications network (10) comprises a set of telephone service operator domains (20), including domains (20A-20C) having intelligent network-type services having non-geographic telephone numbers. A call-originating domain (20G) accesses a non-geographic service number database (30G) to obtain address information concerning the domain which currently handles the called service (90). The address information obtained from the non-geographic service number database includes the address a node in the domain which handles the service, e.g., the address of a gateway node (GW), and optionally the addresses of a service switching point (SSP), a service control function (SCF), and a service data function (SDF) which handles the called service (90). When changing telephone service operators (e.g., changing to a new domain), the non-geographic service number database is updated to reflect the change. Access of the database and usage of the addresses obtained therefrom in the routing message permit the service (90) to retain the same directory number when changing telephone service operators.
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Citations
38 Claims
- 1. A telecommunications network comprising a set of domains, wherein a call-originating domain included in the set of domains uses a portable directory number of an intelligent network-tee service to access a non-geographic service number database to obtain information to be included as a parameter in a routing message for routing a call made from the call-originating domain to the intelligent network-type service, and wherein the information includes an address of a node in a non-originating domain which currently handles the intelligent network-type service, the non-originating domain being included in the set of domains and the intelligent network-type service being performed by a service control function (SCF) of the non-originating domain.
- 14. A telecommunications network comprising a set of domains, wherein a call-originating domain included in the set of domains accesses a database to obtain routing information, wherein the routing information includes both an address of a signal switching point node in the originating domain and an address of a service control function node of a non-originating domain, the non-originating domain being included in the set of domains, and wherein the signal switching point node in the originating domain communicates with the service control function node of the non-originating domain for execution of a call.
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18. A method of routing calls through a Telecommunications network, the telecommunications network having a set of domains, the method comprising:
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using a directory number of an intelligent network-type service to access, in a call-originating domain included in the set of domains, a non-geographic service number database to obtain an address of a node of a telecommunications domain which currently handles the intelligent network-type service; and including the address of the node of the telecommunications domain which currently handles the intelligent network-type service as a parameter in a routing message for routing a call made from the call-originating domain to the node, the telecommunications domain which currently handles the intelligent network-type service being included in the set of domains and the intelligent network-type service being formed by a service control function (SCF) of the non-originating domain. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A method of routing calls through a telecommunications network, the telecommunications network having a set of domains, the method comprising:
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accessing, in a call-originating domain included in the set of domains, a database to obtain an address of a node of a telecommunications domain which currently handles an intelligent network-type service, the telecommunications domain which currently handles the intelligent network-type service being included in the set of domains; including the address of the node of the telecommunications domain which currently handles the intelligent network-type service as a parameter in a routing message for routing a call made from the call-originating domain to the node; wherein the information obtained from the database includes an address of a signal switching point node in the originating domain and an address of a service control function node of a non-originating domain, and wherein the signal switching point node in the originating domain communicates with the service control function node of the non-originating domain for executing the intelligent network-type service.
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35. A telecommunications network comprising a set of domains, wherein a service switching point (SSP) of a call-originating domain included in the set of domains communicates with a service control point (SCP) in a domain which formerly handled a called intelligent network-type service, the domain which formerly handled the called intelligent network-type service being in the set of domains, whereby the service control point (SCP) in the domain which formerly handled the called intelligent network-type service determines that the called intelligent network-type service is no longer handled by the domain which formerly handled the called intelligent network-type service and thereupon accesses a database Lo obtain routing information, the routing information including an address of a service control point (SCP) of a domain currently handling the called intelligent network-type service for execution of the called intelligent network-type service, the domain currently handling the called intelligent network-type service being in the set of domains and the intelligent network-type service being performed by a service control function (SCF) of the non-originating domain.
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36. A method of routing calls through a telecommunications network, the telecommnunications network having a set of domains, the method comprising:
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using a service switching point (SSP) of a call-originating domain included in the set of domains to communicate with a service control point (SCP) in a domain which formerly handled a called intelligent network-type service, the domain which formerly handled the called intelligent network-type service being in the set of domains; using the service control point (SCP) in the domain which formerly handled the called intelligent network-type service to determine that the called intelligent network-type service is no longer handled by the domain which formerly handled the called intelligent network-type service; and
thereuponaccessing a database to obtain routing information, the routing information including an address of a service control point (SCP) of a domain currently handling the called intelligent network-type service for execution of the called intelligent network-type service, the domain currently handling the called intelligent network-type type service being in the set of domains and the intelligent network-type service being performed by a service control function (SCF) of the domain currently handling the called indwelling network-type service.
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37. A telecommunications network comprising a set of domains, wherein a call placed to a called entity having a portable directory number is routed to a service control point (SCP) in a domain which formerly handled the called entity, and wherein the service control point (SCP) in the domain which formerly handled the called entity accesses a database to determine which domain currently handles the called entity and which obtains information to be included as a parameter in a routing message for routing the call, and wherein the service control point (SCP) in the domain which formerly handled the called entity routes the call to a service control point (SCP) in the domain which currently handles the called entity, the domain which formerly handled the called intelligent network-type service and the domain which currently handles the called intelligent network-type service being in the set of domains and the intelligent network-type service being performed by a service control function (SCF) of the domain which currently handles the called intelligent network-type service.
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38. A method of routing calls through a telecommunications network, the telecommunications network having a set of domains, the method comprising:
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routing a call placed to a called entity having a portable directory number to a service control point (SC P) in a domain which formerly handled the called entity, the domain which formerly handled the called intelligent network-type service being in the set of domains; accessing, from the service control point (SCP) in the domain which formerly handled the called entity, a database to determine which domain currently handles the called entity and for obtaining information to be included as a parameter in a routing message for routing the call, the domain which currently handles the called intelligent network-type service being in the set of domains; and routing the call from the service control point (SCP) in the domain which formerly handled the called entity routes to a service control point (SCP) in the domain which currently handles the called entity, the intelligent network-type service being performed by a service control function (SCF) of the domain which currently handles the called intelligent network-type service.
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Specification