US6587683B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unconditional call forwarding in a wireless centrex services system
Assignee: AT&T Inc
•
Filing: 1999-12-13
•
Granted: 2003-07-01
•
Expires: 2019-12-13
Abstract
Abstract The instant invention discloses a method and system for providing a novel wireless centrex service that untethers subscribers from the immobility associated with traditional desktop telephones. Essentially, the present invention extends the benefits of wireless voice and data services to subscribers having a need to move within a plurality of localities such as business and hospital campuses.In accordance with the invention, a wireless telephone subscriber can use a standard cellular/PCS telephone as a wireless extension of their desktop phone, while in the proximity of a miniature radio base station capable of communicating with the PCS/cellular telephone. The advantage of such a system is that a subscriber can use the same cellular/PCS telephone that provides service in the public network in the wireless centrex environment. Additionally, the wireless centrex system provides services and features which are similar to those offered to regular centrex telephone subscribers. Exemplary features include, caller ID, call waiting, call hold, call transfer, call forwarding and voice messaging.
Inventors
- 👤 Albert Chow
- 👤 Jinman Kim
- 👤 Hopeton Walker
- 👤 Spencer Wang
- 👤 Wenchu Ying
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:40
CPC Classifications
H; H04; H04W; H04W76/00; H04W76/10; H04W76/15; H04W4/00; H04W84/00; H04W84/02; H04W84/04
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
210 words
A system for forwarding an incoming call, the call originating from a first communication device and being directed to a directory number of a wireless centrex system, the wireless centrex system comprising: an intelligent radio transceiver in communication with a mobile station; a local digital switch configured to route communications between the first communication device and the mobile station, in communication with the intelligent radio transceiver via a wireline interface without being connected to any public cellular system, configured to route communications between the first communication device and a second communication device and configured to generate a message in response to the call; and a network server platform coupled to the local digital switch to determine responsive to receiving the message whether the call should be forwarded, and to determine where the mobile station is registered and how to route the call to the mobile station, the local digital switch being configured to forward the call to the second communication device responsive to the network server platform determining that the call should be forwarded, and being further configured to route the call to the mobile station having a forward directory number associated with the directory number responsive to the network server platform determining that the call should not be forwarded.
Claim 2
Independent Claim
210 words
A system for forwarding an incoming call, the call originating from a first communication device and being directed to a directory number of a wireless centrex system, the wireless centrex system comprising: an intelligent radio transceiver in communication with a mobile station; a local digital switch configured to route communications between the first communication device and the mobile station, in communication with the intelligent radio transceiver via a wireline interface without being connected to any public cellular system, configured to route communications between the first communication device and a second communication device and configured to generate a message in response to the call; and a network server platform coupled to the local digital switch to determine responsive to receiving the message whether the call should be forwarded, and to determine where the mobile station is registered and how to route the call to the mobile station, the local digital switch being configured to forward the call to the second communication device responsive to the network server platform determining that the call should be forwarded, and being further configured to route the call to the mobile station having a forward directory number associated with the directory number responsive to the network server platform determining that the call should not be forwarded.
Claim 3
Dependent Claim
22 words
The system of claim 1 , wherein the first communication device is registered with a PSTN coupled to the wireless centrex system.
Claim 4
Dependent Claim
18 words
The system of claim 1 , wherein the first communication device is registered with the wireless centrex system.
Claim 5
Dependent Claim
26 words
The system of claim 1 , wherein the network server platform is configured to determine whether the call should be forwarded by checking a subscriber profile.
Claim 6
Dependent Claim
16 words
The system of claim 1 , wherein the message comprises a TCAP AIN Termination Attempt message.
Claim 7
Dependent Claim
19 words
The system of claim 1 , wherein the directory number is a directory number of a wired communication device.
Claim 8
Independent Claim
159 words
A method for forwarding an incoming call, the call originating from a first communication device and being directed to a directory number of a wireless centrex system, the method comprising the steps of: generating a message by a local digital switch in response to the call; determining by a network server platform, responsive to receiving the message, whether the call should be forwarded; and either forwarding the call to the second communication device responsive to the network server platform determining that the call should be forwarded, or routing the call to a wireless mobile station having a forward directory number associated with the directory number responsive to the network server platform determining that the call should not be forwarded, the mobile station being registered with an intelligent radio transceiver of the wireless centrex system, the intelligent radio transceiver being further in communication with the local digital switch via a wireline interface without being connected to any public cellular system.
Claim 9
Independent Claim
159 words
A method for forwarding an incoming call, the call originating from a first communication device and being directed to a directory number of a wireless centrex system, the method comprising the steps of: generating a message by a local digital switch in response to the call; determining by a network server platform, responsive to receiving the message, whether the call should be forwarded; and either forwarding the call to the second communication device responsive to the network server platform determining that the call should be forwarded, or routing the call to a wireless mobile station having a forward directory number associated with the directory number responsive to the network server platform determining that the call should not be forwarded, the mobile station being registered with an intelligent radio transceiver of the wireless centrex system, the intelligent radio transceiver being further in communication with the local digital switch via a wireline interface without being connected to any public cellular system.
Claim 10
Dependent Claim
22 words
The method of claim 7 , wherein the first communication device is registered with a PSTN coupled to the wireless centrex system.
Claim 11
Dependent Claim
18 words
The method of claim 7 , wherein the first communication device is registered with the wireless centrex system.
Claim 12
Dependent Claim
16 words
The method of claim 7 , wherein the step of determining includes checking a subscriber profile.
Claim 13
Dependent Claim
21 words
The method of claim 7 , wherein the step of generating the message includes generating a TCAP AIN Termination Attempt message.
Claim 14
Dependent Claim
19 words
The method of claim 7 , wherein the directory number is a directory number of a wired communication device.
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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) | 2006-06-30 | 2006-12-30 | 2007-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-06-30 | 2010-12-30 | 2011-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-06-30 | 2014-12-30 | 2015-07-01 | $7700.00 | Window Closed / Lapsed |