Patent US5995830A successfully refreshed from Google Patents.
US5995830A
Expired / Lapsed
US
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System and method for processing dropped calls
Assignee: AT&T Mobility II LLC
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Filing: 1997-04-09
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Granted: 1999-11-30
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Expires: 2017-04-09
Abstract
Abstract A method and apparatus for processing dropped calls. If, during an established call between two communication devices, a telecommunication network node determines that a communication link to one of the devices has been dropped, the node determines the cause of the dropped communication link and sends a status message to the non-dropped communication device. If a reconnection attempt is appropriate, the node attempts to reconnect to the dropped device. If a reconnection attempt is not appropriate, or if the reconnection attempt is unsuccessful, the non-dropped communication device is connected to a voice mail node. If the reconnection attempt is successful, the call between the two communication devices is re-established.
Inventors
- 👤 Umesh J. Amin
- 👤 Bruce E. Rotvold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:06
CPC Classifications
H; H04; H04W; H04W4/00; H04W4/12; H04M; H04M3/00; H04M3/42
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
68 words
A method for processing a telephone call between at least two communication devices comprising the steps of: determining, during an established call between said communication devices, that a connection to one of said communication devices has been dropped; determining the reason that said connection to the one communication device has been dropped; and determining whether to attempt to reconnect to said one communication device based on said reason.
Claim 2
Independent Claim
68 words
A method for processing a telephone call between at least two communication devices comprising the steps of: determining, during an established call between said communication devices, that a connection to one of said communication devices has been dropped; determining the reason that said connection to the one communication device has been dropped; and determining whether to attempt to reconnect to said one communication device based on said reason.
Claim 3
Dependent Claim
33 words
The method of claim 1 further comprising the step of sending a status message to the other communication device indicating the reason that said connection to the one communication device has been dropped.
Claim 4
Dependent Claim
21 words
The method of claim 1 further comprising the step of: reconnecting to said one communication device; and re-establishing said telephone call.
Claim 5
Dependent Claim
23 words
The method of claim 3 further comprising the step of: determining a telephone number of said one communication device from a network node.
Claim 6
Dependent Claim
28 words
The method of claim 3 further comprising the step of: sending a reconnection indication to the other communication device upon a successful reconnection to said one communication device.
Claim 7
Dependent Claim
31 words
The method of claim 1 further comprising the step of: attempting to reconnect to said one communication device; and if said reconnection fails, connecting said other communication device to voice mail.
Claim 8
Dependent Claim
80 words
The method of claim 1 wherein said one communication device is a wireless communication device operating in conjunction with a wireless communication network having a coverage area, said method further comprising the step of: determining that said connection to said wireless communication device has been dropped because said wireless communication device has traveled outside the coverage area of the wireless communication network; and connecting said other communication device to voice mail without attempting to reconnect to said wireless communication device.
Claim 9
Dependent Claim
14 words
The method of claim 1 wherein said one communication device is a wireless telephone.
Claim 10
Dependent Claim
14 words
The method of claim 1 wherein said one communication device is a landline telephone.
Claim 11
Dependent Claim
72 words
A telecommunication system for processing a telephone call between at least two communication devices comprising: means for determining, during an established call between said communication devices, that a connection to one of said communication devices has been dropped; means for determining the reason that said connection to the one communication device has been dropped; and means for determining whether to attempt to reconnect to said one communication device based on said reason.
Claim 12
Dependent Claim
72 words
A telecommunication system for processing a telephone call between at least two communication devices comprising: means for determining, during an established call between said communication devices, that a connection to one of said communication devices has been dropped; means for determining the reason that said connection to the one communication device has been dropped; and means for determining whether to attempt to reconnect to said one communication device based on said reason.
Claim 13
Dependent Claim
32 words
The system of claim 10 further comprising means for sending a status message to the other communication device indicating the reason that said connection to the one communication device has been dropped.
Claim 14
Dependent Claim
22 words
The system of claim 10 further comprising: means for reconnecting to said one communication device; and means for re-establishing said telephone call.
Claim 15
Dependent Claim
22 words
The system of claim 12 further comprising: means for determining the telephone number of said one communication device from a network node.
Claim 16
Dependent Claim
27 words
The system of claim 12 further comprising: means for sending a reconnection indication to the other communication device upon a successful reconnection to said one communication device.
Claim 17
Dependent Claim
32 words
The system of claim 10 further comprising: means for attempting to reconnect to said one communication device; and means for connecting said other communication device to voice mail if said reconnection fails.
Claim 18
Dependent Claim
81 words
The system of claim 10 wherein said one communication device is a wireless communication device operating in conjunction with a wireless communication network having a coverage area, said system further comprising: means for determining that said connection to said wireless communication device has been dropped because said wireless communication device has traveled outside the coverage area of the wireless communication network; and means for connecting said other communication device to voice mail without attempting to reconnect to said wireless communication device.
Claim 19
Dependent Claim
14 words
The system of claim 10 wherein said one communication device is a wireless telephone.
Claim 20
Dependent Claim
14 words
The system of claim 10 wherein said one communication device is a landline telephone.
Claim 21
Dependent Claim
40 words
The method of claim 8 wherein said step of determining the reason that said connection to the one communication device has been dropped further comprises the step of: analyzing a mobile assisted handoff list previously received from said wireless telephone.
Claim 22
Dependent Claim
37 words
The method of claim 8 wherein said step of determining the reason that said connection to the one communication device has been dropped further comprises the step of: performing statistical analysis of a wireless telephone communication system.
Claim 23
Dependent Claim
39 words
The system of claim 17 wherein said means for determining the reason that said connection to the one communication device has been dropped further comprises: means for analyzing a mobile assisted handoff list previously received from said wireless telephone.
Claim 24
Dependent Claim
39 words
The system of claim 17 wherein said means for determining the reason that said connection to the one communication device has been dropped further comprises the step of: means for performing statistical analysis of a wireless telephone communication system.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-11-29 | 2003-05-31 | 2003-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-11-29 | 2007-05-31 | 2007-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-11-29 | 2011-05-31 | 2011-11-30 | $7700.00 | Window Closed / Lapsed |