Patent US5502756A successfully refreshed from Google Patents.
US5502756A
Expired / Lapsed
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Remote test call unit and service
Assignee: AT&T Inc
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Filing: 1992-10-28
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Granted: 1996-03-26
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Expires: 2012-10-28
Abstract
Abstract Reliability of telephone service is increased by providing a test call apparatus configured to launch a test call to a preselected telephone number in response to a call from a remote location requesting that the test call be placed. The test call apparatus launches the test call as if the call were being made from the user-supplied originating area code, exchange, or phone number. The test call apparatus then bridges the requesting call and the test call to facilitate analysis of the routing of the test call.
Inventors
- 👤 Michael A. Crocker
- 👤 V. R. Gopala Rao
- 👤 Meah A. Shahabuddin
- 👤 Barbara H. Stark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:33
CPC Classifications
H; H04; H04M; H04M3/00; H04M3/22; H04M3/2254; H04M3/26; H04M3/28; H04M3/32; H04M3/323
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
136 words
A method for testing the routing that would be implemented for a telephone call that originates at a first telephone station having a first telephone number and is placed to a second telephone station having a second telephone number, the method comprising the steps of: receiving at a remote call test unit (RCTU) a first telephone call from a third telephone station having a third telephone number; placing a test call from the remote call test unit to the second telephone station in response to receiving the first telephone call, said test call emulating the originating of a call from the first telephone station to the second telephone station, wherein said emulating comprises supplying with the test call at least a portion of the first telephone number; and interconnecting the first call with the test call.
Claim 2
Independent Claim
136 words
A method for testing the routing that would be implemented for a telephone call that originates at a first telephone station having a first telephone number and is placed to a second telephone station having a second telephone number, the method comprising the steps of: receiving at a remote call test unit (RCTU) a first telephone call from a third telephone station having a third telephone number; placing a test call from the remote call test unit to the second telephone station in response to receiving the first telephone call, said test call emulating the originating of a call from the first telephone station to the second telephone station, wherein said emulating comprises supplying with the test call at least a portion of the first telephone number; and interconnecting the first call with the test call.
Claim 3
Dependent Claim
32 words
The invention as defined in claim 1 wherein the first telephone number includes a three-digit number representing a numbering plan area (NPA), the three-digit number being received during the first telephone call.
Claim 4
Dependent Claim
35 words
The invention as defined in claim 1 wherein the fast telephone number includes a six-digit number representing a numbering plan area (NPA) and an exchange, the six-digit number being received during the first telephone call.
Claim 5
Dependent Claim
32 words
The invention as defined in claim 1 wherein the fast telephone number includes a ten-digit number representing an automatic number identifier (AND, the ten-digit number being received during the first telephone call.
Claim 6
Dependent Claim
36 words
The invention as defined in claim 1 wherein the remote call test unit is coupled to a telecommunications switch via a trunk that permits delivering from the RCTU to the telecommunications switch numbers representing different NPAs.
Claim 7
Dependent Claim
15 words
The invention as defined in claim 5 wherein the trunk is a multi-frequency (MF) trunk.
Claim 8
Dependent Claim
33 words
The invention as defined in claim 6 wherein the remote call test unit places the test call through the telecommunications switch via one of Feature Group D-type signaling and Feature Group C-type signaling.
Claim 9
Dependent Claim
31 words
The invention as defined in claim 1 wherein the step of placing the test call further includes the step of restricting placement of the test call to an 800 telephone number.
Claim 10
Dependent Claim
17 words
The invention as defined in claim 1 wherein the second telephone number is an 800 telephone number.
Claim 11
Dependent Claim
33 words
The invention as defined in claim 1 further comprising the step of receiving from an automated voice system at least one of the fast and second telephone numbers before placing the test call.
Claim 12
Independent Claim
204 words
A method for use in a telecommunications system of the type in which, in response to the placing of a call to a virtual telephone number, a database is queried to supply a destination telephone number which is a function of said virtual telephone number and at least a portion of an originating telephone number identified for said call, and said call is thereupon routed to said destination telephone number, said method comprising the steps of: receiving at a test point within said system an incoming call; prompting an originator of said incoming call to supply, for said incoming call, both a particular virtual telephone number and at least a portion of a dummy originating telephone number via telephone keypad input; receiving, in response to said prompting, telephone-keypad-originated signals specifying said particular virtual telephone number and said dummy originating telephone number portion; and placing an outgoing call to said particular virtual telephone number and identifying as said originating telephone number portion for that call the received dummy originating telephone number portion, whereby said outgoing call is routed to a destination telephone station as though the outgoing call had originated from a telephone station have a telephone number including said dummy originating telephone number portion.
Claim 13
Independent Claim
204 words
A method for use in a telecommunications system of the type in which, in response to the placing of a call to a virtual telephone number, a database is queried to supply a destination telephone number which is a function of said virtual telephone number and at least a portion of an originating telephone number identified for said call, and said call is thereupon routed to said destination telephone number, said method comprising the steps of: receiving at a test point within said system an incoming call; prompting an originator of said incoming call to supply, for said incoming call, both a particular virtual telephone number and at least a portion of a dummy originating telephone number via telephone keypad input; receiving, in response to said prompting, telephone-keypad-originated signals specifying said particular virtual telephone number and said dummy originating telephone number portion; and placing an outgoing call to said particular virtual telephone number and identifying as said originating telephone number portion for that call the received dummy originating telephone number portion, whereby said outgoing call is routed to a destination telephone station as though the outgoing call had originated from a telephone station have a telephone number including said dummy originating telephone number portion.
Claim 14
Dependent Claim
19 words
The invention of claim 11 wherein in said placing step said incoming call and said outgoing call are interconnected.
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) | 1999-03-26 | 1999-09-25 | 2000-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-03-26 | 2003-09-25 | 2004-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-03-26 | 2007-09-25 | 2008-03-26 | $7700.00 | Window Closed / Lapsed |