Patent US3751935A successfully refreshed from Google Patents.
Patent US5842136A successfully refreshed from Google Patents.
US5842136A
Expired / Lapsed
US
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Adding and removing subscribers in an ongoing call
Assignee: Nokia Technologies Oy
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Filing: 1995-02-15
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Granted: 1998-11-24
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Expires: 2015-02-15
Abstract
Abstract A method and telecommunication system for controlling a call in a telecommunication system, which comprises a telecommunication network and a first subscriber station and one or more other subscriber stations, in which method is maintained a call in which the subscriber stations participate. In the method of the invention, to remove the desired subscriber stations from the call, the first subscriber station instructs the telecommunication network to remove one or more other subscriber stations from the call, and the telecommunication network removes one or more other subscriber stations from the call without the call being interrupted. In particular, upon issuance of an addition message containing subscriber IDs, the system adds any identified subscriber not yet participating in the call and removes any identified subscriber already participating in the call.
Inventors
- 👤 Martti Tuulos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:04
CPC Classifications
H; H04; H04W; H04W84/00; H04W84/02; H04W84/04; H04W84/08; H04M; H04M3/00; H04M3/42; H04M3/56; H04M2203/00; H04M2203/50; H04M2203/5027; H04M3/42136; H04M3/42153
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
166 words
A method for controlling a call in a telecommunication system, which comprises a telecommunication network, which includes a database and a first subscriber station provided with identifiers and one or more other subscriber stations provided with identifiers, said method comprising the steps of maintaining a call in which said subscriber stations participate, maintaining the identifiers of the subscribers participating in the call in the database of the telecommunication network, the first subscriber station transmitting an addition message including the identifier of one or more other subscriber stations, said addition message instructing the telecommunication network to add one or more other subscribers to the call, comparing in response to the addition message, the identifiers one or more other subscriber stations included in the addition message with the identifiers of the subscriber stations participating in the call, these identifiers being maintained in the database, and if the identifiers are the same, removing those subscriber stations the identifiers of which are included in the addition message from the call.
Claim 2
Independent Claim
166 words
A method for controlling a call in a telecommunication system, which comprises a telecommunication network, which includes a database and a first subscriber station provided with identifiers and one or more other subscriber stations provided with identifiers, said method comprising the steps of maintaining a call in which said subscriber stations participate, maintaining the identifiers of the subscribers participating in the call in the database of the telecommunication network, the first subscriber station transmitting an addition message including the identifier of one or more other subscriber stations, said addition message instructing the telecommunication network to add one or more other subscribers to the call, comparing in response to the addition message, the identifiers one or more other subscriber stations included in the addition message with the identifiers of the subscriber stations participating in the call, these identifiers being maintained in the database, and if the identifiers are the same, removing those subscriber stations the identifiers of which are included in the addition message from the call.
Claim 3
Dependent Claim
36 words
A method according to claim 1, further comprising: removing by the telecommunication network of one or more other subscriber stations from the call by transmitting a release message to said one or more other subscriber stations.
Claim 4
Dependent Claim
24 words
A method according to claim 1, wherein said identifiers of one or more other subscriber stations comprise the identifier of a group call group.
Claim 5
Dependent Claim
31 words
A method according to claim 1, wherein the subscriber station, which instructs the telecommunication network to remove a subscriber station or subscriber stations from the call is a fixed control point.
Claim 6
Independent Claim
169 words
A method for controlling a call in a telecommunication system, which comprises a telecommunication network, which includes a database and a first subscriber station provided with identifiers and one or more other subscriber stations provided with identifiers, said method comprising the steps of maintaining a call in which said subscriber stations participate, maintaining the identifiers of the subscribers participating in the call in the database of the telecommunication network, transmitting an addition message including the identifier of one or more other subscriber stations from the first subscriber station, said addition message instructing the telecommunication network to add one or more other subscribers to the call, comparing in response to the addition message, the identifiers of one or more other subscriber stations included in the addition message with the identifiers of the subscriber stations participating in the call, these identifiers being maintained in the database, and if the identifiers are the same, removing those subscriber stations the identifiers of which are not included in the addition message from the call.
Claim 7
Independent Claim
169 words
A method for controlling a call in a telecommunication system, which comprises a telecommunication network, which includes a database and a first subscriber station provided with identifiers and one or more other subscriber stations provided with identifiers, said method comprising the steps of maintaining a call in which said subscriber stations participate, maintaining the identifiers of the subscribers participating in the call in the database of the telecommunication network, transmitting an addition message including the identifier of one or more other subscriber stations from the first subscriber station, said addition message instructing the telecommunication network to add one or more other subscribers to the call, comparing in response to the addition message, the identifiers of one or more other subscriber stations included in the addition message with the identifiers of the subscriber stations participating in the call, these identifiers being maintained in the database, and if the identifiers are the same, removing those subscriber stations the identifiers of which are not included in the addition message from the call.
Claim 8
Dependent Claim
36 words
A method according to claim 5, further comprising: removing by the telecommunication network of one or more other subscriber stations from the call by transmitting a release message to said one or more other subscriber stations.
Claim 9
Dependent Claim
24 words
A method according to claim 5, wherein said identifiers of one or more other subscriber stations comprise the identifier of a group call group.
Claim 10
Dependent Claim
31 words
A method according to claim 5, wherein the subscriber station, which instructs the telecommunication network to remove a subscriber station or subscriber stations from the call is a fixed control point.
Claim 11
Dependent Claim
112 words
A telecommunication system, comprising: a telecommunication network; a first subscriber station participating in a call; and at least one other subscriber station; said telecommunication network comprising removing means responsive to said first subscriber station for removing at least one said other subscriber station from participating in said call; and comparing means responsive to an addition message transmitted by the first subscriber station for comparing an identifier of at least one other subscriber station included in the addition message with an identifier of each other subscriber station participating in the call stored in a database, and for removing at least one other subscriber station from the call on the basis of said comparison.
Claim 12
Dependent Claim
112 words
A telecommunication system, comprising: a telecommunication network; a first subscriber station participating in a call; and at least one other subscriber station; said telecommunication network comprising removing means responsive to said first subscriber station for removing at least one said other subscriber station from participating in said call; and comparing means responsive to an addition message transmitted by the first subscriber station for comparing an identifier of at least one other subscriber station included in the addition message with an identifier of each other subscriber station participating in the call stored in a database, and for removing at least one other subscriber station from the call on the basis of said comparison.
References Cited (Backward Citations)
US4649567A
Cited
WO1989006078A1
Cited
US5369783A
Cited
US5224094A
Cited
EP0604053A1
Cited
US5373549A
Cited
GB2281676A
Cited
US5473605A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-11-23 | 2002-05-25 | 2002-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-11-23 | 2006-05-25 | 2006-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-11-23 | 2010-05-25 | 2010-11-24 | $7700.00 | Window Closed / Lapsed |