System and method for blocking a telephone call
First Claim
1. A method of blocking a telephone call from a calling party to a called party, comprising:
- receiving a telephone call from the calling party at a local-designated trunk group of a service switching point (SSP) serving the called party;
determining, based on redirection information contained in a redirection field of an Info_Collected query message associated with the telephone call sent to the service control point, if the Local and Access Transport Area (LATA) of the calling party is interLATA with respect to the SSP, wherein the SSP is within an SSP LATA; and
when the calling party is interLATA with respect to the SSP,determining a screening indicator value, wherein the screening indicator value comprises a value of a field, other than the redirection field, in the Info_Collect query message, wherein the screening indicator value indicates whether the telephone call has been transmitted at least in part using a private network, andblocking the telephone call when the screening indicator value indicates that the telephone call has been transmitted at least in part using a private network.
2 Assignments
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Accused Products
Abstract
A system and method are provided for blocking a telephone call from a calling party to a called party, the calling party associated with a calling party directory number, including a local-designated trunk group over which the incoming telephone call from the calling party is received. A service switching point is coupled with the local-designated trunk group, the service switching point receiving the telephone call, generating a query message including the calling party directory number, and sending the query message to a service control point. The service control point is coupled with the service switching point, receives the query message, and determines if the calling party is inter Local Access and Transport Area (interLATA) with respect to the service switching point. Where the calling party is determined to be interLATA, the service control point determines a screening indicator value, and generates a response message to the service switching point to block the telephone call received via the local-designated trunk group where the screening indicator value indicates that the telephone call is public telecommunications network provided.
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Citations
27 Claims
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1. A method of blocking a telephone call from a calling party to a called party, comprising:
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receiving a telephone call from the calling party at a local-designated trunk group of a service switching point (SSP) serving the called party; determining, based on redirection information contained in a redirection field of an Info_Collected query message associated with the telephone call sent to the service control point, if the Local and Access Transport Area (LATA) of the calling party is interLATA with respect to the SSP, wherein the SSP is within an SSP LATA; and when the calling party is interLATA with respect to the SSP, determining a screening indicator value, wherein the screening indicator value comprises a value of a field, other than the redirection field, in the Info_Collect query message, wherein the screening indicator value indicates whether the telephone call has been transmitted at least in part using a private network, and blocking the telephone call when the screening indicator value indicates that the telephone call has been transmitted at least in part using a private network. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A telecommunications network for blocking a telephone call from a calling party to a called party, the telephone call having corresponding voice and control information wherein the control information includes screening indicator information, the calling party associated with a calling party directory number, comprising:
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a local-designated trunk group over which the telephone call from the calling party is received; a service switching point (SSP) coupled with the local-designated trunk group, the SSP receiving the telephone call, generating a query message including the calling party directory number, and sending the query message to a service control point; and the service control point (SCP) coupled with the SSP, the SCP receiving the query message, and determining, based on redirection information contained in a redirection field of an Info_Collected query message associated with the telephone call sent to the service control point, when the calling party is inter Local Access and Transport Area (interLATA) with respect to the SSP, and when the calling party is interLATA, the SCP determining a screening indicator value, wherein the screening indicator value comprises a value of a field, other than the redirection field, in the Info_Collect query message, wherein the screening indicator value indicates whether the telephone call has been transmitted at least in part using a private network, and generating a response message to the SSP to block the telephone call received via the local-designated trunk group when the screening indicator value indicates that the telephone call has been transmitted at least in part using a private network. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A service control point used in the blocking of a telephone call, the telephone call being transmitted from a calling party to the called party over a local-designated trunk group associated with the called party, comprising:
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a controller for controlling operation of the service control point; and a memory device coupled with the controller and including directory number information and corresponding Local Access and Transport Area (LATA) information for a plurality of telephone subscribers; wherein the controller controlling operation of the service control point includes the controller determining, based on redirection information contained in a redirection field of an Info_Collected query message associated with the telephone call sent to the service control point, if the calling party is interLATA with respect to a service switching point coupled to the local-designated trunk group, using information from the query message and the memory device, wherein if it is determined that the calling party is interLATA, the controller determining a screening indicator value, wherein the screening indicator value comprises a value of a field, other than the redirection field, in the Info_Collect query message, wherein the screening indicator value indicates whether the telephone call has been transmitted at least in part using a private network, and generating a response message used in the blocking of the telephone call received over the local-designated trunk group when the screening indicator value indicates that the telephone call has been transmitted at least in part using a private network.
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24. A non-transitory computer readable memory media for use in a telecommunications network device, the memory media comprising instructions executable to:
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detect a telephone call from a calling party to a called party at a local-designated trunk group coupled to a service switching point (SSP) servicing the called party; determine, based on redirection information contained in a redirection field of an Info_Collected query message associated with the telephone call sent to the service control point, when the calling party is inter Local Access and Transport Area (interLATA) with respect to the SSP; and determine, based on a screening indicator value when the calling party is intreLATA with respect to the SSP, wherein the screening indicator value comprises a value of a field, other than the redirection field, in the Info_Collected query message, wherein the screening indicator value indicates whether the telephone call has been transmitted at least in part using a private network, and for generating a response message to block the telephone call received over the local-designated trunk group when the screening indicator value indicates that the telephone call has been transmitted at least in part using a private network. - View Dependent Claims (25)
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26. A non-transitory computer readable memory media for use in a telecommunications network device, the memory media comprising instructions executable to:
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receive an indication of a telephone call from a calling party to a called party at a local-designated trunk group coupled to a service switching point (SSP) servicing the called party; determine, based on redirection information associated with the telephone call contained in a redirection field of an Info_Collected query message sent to the service control point, when the calling party is inter Local Access and Transport Area (interLATA) with respect to the SSP; and determine, based on a screening indicator value, wherein the screening indicator value comprises a value of a field, other than the redirection field, in the Info_Collect query message, wherein the screening indicator value indicated whether the telephone call has been transmitted at least in part using a private network, when the calling party is interLATA with respect to the SSP, and for generating a response message to block the telephone call received over the local-designated trunk group when the screening indicator value indicates that the telephone call is interLATA with respect to the SSP been transmitted at least in part using a private network. - View Dependent Claims (27)
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Specification