Patent US5550909A successfully refreshed from Google Patents.
US5550909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
International toll-free calling process
Assignee: AT&T Inc
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Filing: 1994-10-14
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Granted: 1996-08-27
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Expires: 2014-10-14
Abstract
Abstract A telecommunications method is disclosed for processing calling party information so that an "800" or toll-free telephone number or a value-added service telephone number made up of a special service code followed by 7 digits indicating an ultimate destination for the call can be directly provided by a foreign telecommunication administration and processed by a domestic telecommunication administration without the need for the originating foreign telecommunication administration to pass a country identifier or other carrier specific information as part of the dialed number. Additionally, the method provides for a blocking condition which allows calls from certain foreign locations to the dialed number to be blocked.
Inventors
- 👤 Rajat Chanda
- 👤 Hani M. Dib
- 👤 Steven T. Heinsius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:51
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/0016
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
173 words
A method for processing international calls comprising the steps of: receiving a call, at a switch located in a domestic telecommunications network, made by a caller in a foreign location by directly dialing a domestic telephone number assigned to a sponsor of said domestic telephone number, said domestic telephone number including a special service code followed by 7 digits, all of said 7 digits being used to identify said sponsor as an ultimate destination for said call, said call having been carried over an international trunk sub-group along with call origination information and said domestic telephone number; determining at said switch that said call originated from said foreign location and is an international call; identifying from said international trunk sub-group trunk sub-group characteristics including a country identifier and originating carrier specific information for the call; utilizing said country identifier and carrier specific information as ANI parameters; and processing said call to said ultimate destination using all of said 7 digits of said domestic telephone number, said country identifier and said carrier specific information.
Claim 2
Independent Claim
173 words
A method for processing international calls comprising the steps of: receiving a call, at a switch located in a domestic telecommunications network, made by a caller in a foreign location by directly dialing a domestic telephone number assigned to a sponsor of said domestic telephone number, said domestic telephone number including a special service code followed by 7 digits, all of said 7 digits being used to identify said sponsor as an ultimate destination for said call, said call having been carried over an international trunk sub-group along with call origination information and said domestic telephone number; determining at said switch that said call originated from said foreign location and is an international call; identifying from said international trunk sub-group trunk sub-group characteristics including a country identifier and originating carrier specific information for the call; utilizing said country identifier and carrier specific information as ANI parameters; and processing said call to said ultimate destination using all of said 7 digits of said domestic telephone number, said country identifier and said carrier specific information.
Claim 3
Dependent Claim
38 words
The method of claim 1, wherein said processing step includes the steps of obtaining routing information indicating said ultimate destination utilizing all of said 7 digits of said domestic telephone number; and billing said sponsor for said call.
Claim 4
Dependent Claim
32 words
The method of claim 1, wherein said step of identifying trunk sub-group characteristics from said international trunk sub-group which carried said call further includes the step of identifying calling line identification information.
Claim 5
Dependent Claim
19 words
The method of claim 3, further including the step of providing said calling line identification information to said sponsor.
Claim 6
Independent Claim
160 words
A method for processing international calls comprising the steps of: receiving a call made by a caller in a foreign location by directly dialing a domestic toll-free number assigned to a subscriber to a toll-free service, said domestic toll-free number including a special service code followed by 7 digits, all of said 7 digits being used to identify an ultimate destination for said call and said call having been carried over an international trunk sub-group, at a switch located in a domestic telecommunications network; determining at said switch that said call originated from said foreign location and is a toll-free call; identifying from said international trunk sub-group trunk sub-group characteristics including a country identifier and originating carrier specific information for said toll-free call; utilizing said country identifier and carrier specific information as ANI parameters; processing said call to said ultimate destination using all of said 7 digits; and providing said country identifier and said carrier specific information to said subscriber.
Claim 7
Independent Claim
160 words
A method for processing international calls comprising the steps of: receiving a call made by a caller in a foreign location by directly dialing a domestic toll-free number assigned to a subscriber to a toll-free service, said domestic toll-free number including a special service code followed by 7 digits, all of said 7 digits being used to identify an ultimate destination for said call and said call having been carried over an international trunk sub-group, at a switch located in a domestic telecommunications network; determining at said switch that said call originated from said foreign location and is a toll-free call; identifying from said international trunk sub-group trunk sub-group characteristics including a country identifier and originating carrier specific information for said toll-free call; utilizing said country identifier and carrier specific information as ANI parameters; processing said call to said ultimate destination using all of said 7 digits; and providing said country identifier and said carrier specific information to said subscriber.
Claim 8
Dependent Claim
19 words
The method of claim 5, wherein said processing step includes the steps of billing said subscriber for said call.
Claim 9
Dependent Claim
21 words
The method of claim 5, further including the step of extracting from said trunk sub-group characteristics a numbering plan area code.
Claim 10
Independent Claim
183 words
A method for processing international calls comprising the steps of: receiving a call at a switch located in a domestic telecommunications network, said call having been made by a caller in a foreign location to a domestic telephone number assigned to a sponsor of said domestic telephone number, said domestic telephone number including a special service code followed by 7 digits all of said 7 digits being used to identify an ultimate destination for said call, said call having been carried over an international trunk sub-group along with call origination information and said domestic telephone number; identifying from said international trunk sub-group trunk sub-group characteristics including a country identifier and originating carrier specific information for the call; utilizing said country identifier and carrier specific information as ANI parameters; determining that said call originated from said foreign location and, using said ANI parameters, whether a blocking condition exists for said call and, if so, terminating said call, otherwise, processing said call to said ultimate destination using all of said 7 digits of said domestic telephone number, said country identifier and said carrier specific information.
Claim 11
Independent Claim
183 words
A method for processing international calls comprising the steps of: receiving a call at a switch located in a domestic telecommunications network, said call having been made by a caller in a foreign location to a domestic telephone number assigned to a sponsor of said domestic telephone number, said domestic telephone number including a special service code followed by 7 digits all of said 7 digits being used to identify an ultimate destination for said call, said call having been carried over an international trunk sub-group along with call origination information and said domestic telephone number; identifying from said international trunk sub-group trunk sub-group characteristics including a country identifier and originating carrier specific information for the call; utilizing said country identifier and carrier specific information as ANI parameters; determining that said call originated from said foreign location and, using said ANI parameters, whether a blocking condition exists for said call and, if so, terminating said call, otherwise, processing said call to said ultimate destination using all of said 7 digits of said domestic telephone number, said country identifier and said carrier specific information.
Claim 12
Dependent Claim
28 words
The method of claim 8 wherein said step of processing said call to said ultimate destination further includes the step of creating an AMA record for said call.
Claim 13
Dependent Claim
21 words
The method of claim 9 further including the step of billing said sponsor of said domestic telephone number for said call.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-08-27 | 2000-02-26 | 2000-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-08-27 | 2004-02-26 | 2004-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-08-27 | 2008-02-26 | 2008-08-27 | $7700.00 | Window Closed / Lapsed |