Patent US6167256A successfully refreshed from Google Patents.
US6167256A
Expired / Lapsed
US
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Arrangement for call forwarding in a mobile services switching center
Assignee: Nokia Technologies Oy
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Filing: 1995-12-21
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Granted: 2000-12-26
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Expires: 2015-12-21
Abstract
Abstract A mobile services switching center for forwarding a subscriber directory number terminating call to a call forwarding number which is retrieved from a separate subscriber database. The mobile services switching center contains a call forwarding database which stores directory numbers of forwarding parties from each of which a set-up of a forwarded call is in progress. The call control of the mobile services switching center is arranged to check, prior to initiating call forwarding, whether a directory number of the forwarding party is included in the call forwarding database. The call control of the mobile services switching center is further arranged to release the call in response to the directory number of the forwarding party being included in the call forwarding database, in order to avoid looping of the call due to the call forwarding, and, in response to the directory number of the forwarding party not being included in the call forwarding database, to insert the directory number of the forwarding party in the call forwarding database, and to continue the call forwarding.
Inventors
- 👤 Petteri Yla-Outinen
- 👤 Matti Keskinen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:44
CPC Classifications
H; H04; H04W; H04W4/00; H04W4/16; H04M; H04M3/00; H04M3/42; H04M3/54; H04M3/545
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
185 words
A mobile services switching center for forwarding a subscriber directory number terminating call to a call forwarding number which is retrieved from a separate subscriber database wherein: said mobile services switching center comprises a call forwarding database which stores directory numbers of forwarding parties from each of which a set-up of a forwarded call is in progress, the call control of the mobile services switching center is arranged to check, prior to initiating call forwarding, whether a directory number of the forwarding party is included in the call forwarding database, the call control of the mobile services switching center is arranged to release the call in response to the directory number of the forwarding party being included in the call forwarding database, in order to avoid looping of the call due to the call forwarding, and the call control of the mobile services switching center is arranged, in response to the directory number of the forwarding party not being included in the call forwarding database, to insert the directory number of the forwarding party in the call forwarding database, and to continue the call forwarding.
Claim 2
Dependent Claim
185 words
A mobile services switching center for forwarding a subscriber directory number terminating call to a call forwarding number which is retrieved from a separate subscriber database wherein: said mobile services switching center comprises a call forwarding database which stores directory numbers of forwarding parties from each of which a set-up of a forwarded call is in progress, the call control of the mobile services switching center is arranged to check, prior to initiating call forwarding, whether a directory number of the forwarding party is included in the call forwarding database, the call control of the mobile services switching center is arranged to release the call in response to the directory number of the forwarding party being included in the call forwarding database, in order to avoid looping of the call due to the call forwarding, and the call control of the mobile services switching center is arranged, in response to the directory number of the forwarding party not being included in the call forwarding database, to insert the directory number of the forwarding party in the call forwarding database, and to continue the call forwarding.
Claim 3
Dependent Claim
47 words
A mobile services switching center as claimed in claim 1, wherein the call control of the mobile services switching center is arranged to delete the directory number of the forwarding party from the call forwarding database when the set-up of the forwarded call terminates or is interrupted.
Claim 4
Dependent Claim
61 words
A mobile services switching center as claimed in claim 1, wherein a time-out, which the call control of the mobile services switching center activates when the directory number of the forwarding party is provided in the call forwarding database, and which time-out the call control removes when the directory number of the forwarding party is deleted from the call forwarding database.
Claim 5
Dependent Claim
47 words
A mobile services switching center as claimed in claim 3, wherein the call control of the mobile services switching center is arranged to delete the directory number of the forwarding party from the call forwarding database in response to the expiration of the time-out associated with it.
Claim 6
Dependent Claim
35 words
A mobile services switching center as claimed in claim 1, wherein the mobile services switching center is a gateway mobile services switching center, and the call forwarding number is obtained from the home location register.
Claim 7
Dependent Claim
35 words
A mobile services switching center as claimed in claim 1, wherein the mobile services switching center is the center serving the mobile subscriber, and the call forwarding number is obtained from the visitor location register.
Claim 8
Dependent Claim
30 words
A mobile services switching center as claimed in claim 1, wherein the mobile services switching center is the switching center of the GSM mobile communication system or a similar system.
Claim 9
Dependent Claim
307 words
A mobile services switching center for forwarding a subscriber directory number terminating call to a call forwarding number which is retrieved from a separate subscriber database wherein: said mobile services switching center comprises a call forwarding database which stores directory numbers of forwarding parties from each of which a set-up of a forwarded call is in progress, the call control of the mobile services switching center is arranged to check, prior to initiating call forwarding, whether a directory number of the forwarding party is included in the call forwarding database, the call control of the mobile services switching center is arranged to release the call in response to the directory number of the forwarding party being included in the call forwarding database, in order to avoid looping of the call due to the call forwarding, the call control of the mobile services switching center is arranged, in response to the directory number of the forwarding party not being included in the call forwarding database, to insert the directory number of the forwarding party in the call forwarding database, and to continue the call forwarding the call control of the mobile services switching center is arranged to delete the directory number of the forwarding party from the call forwarding database when the set-up of the forwarded call terminates or is interrupted a time-out, which the call control of the mobile services switching center activates when the directory number of the forwarding party is provided in the call forwarding database, and which time-out the call control removes when the directory number of the forwarding party is deleted from the call forwarding database, and the call control of the mobile services switching center is arranged to delete the directory number of the forwarding party from the call forwarding database in response to the expiration of the time-out associated with it.
Claim 10
Dependent Claim
307 words
A mobile services switching center for forwarding a subscriber directory number terminating call to a call forwarding number which is retrieved from a separate subscriber database wherein: said mobile services switching center comprises a call forwarding database which stores directory numbers of forwarding parties from each of which a set-up of a forwarded call is in progress, the call control of the mobile services switching center is arranged to check, prior to initiating call forwarding, whether a directory number of the forwarding party is included in the call forwarding database, the call control of the mobile services switching center is arranged to release the call in response to the directory number of the forwarding party being included in the call forwarding database, in order to avoid looping of the call due to the call forwarding, the call control of the mobile services switching center is arranged, in response to the directory number of the forwarding party not being included in the call forwarding database, to insert the directory number of the forwarding party in the call forwarding database, and to continue the call forwarding the call control of the mobile services switching center is arranged to delete the directory number of the forwarding party from the call forwarding database when the set-up of the forwarded call terminates or is interrupted a time-out, which the call control of the mobile services switching center activates when the directory number of the forwarding party is provided in the call forwarding database, and which time-out the call control removes when the directory number of the forwarding party is deleted from the call forwarding database, and the call control of the mobile services switching center is arranged to delete the directory number of the forwarding party from the call forwarding database in response to the expiration of the time-out associated with it.
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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) | 2003-12-26 | 2004-06-26 | 2004-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-12-26 | 2008-06-26 | 2008-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-12-26 | 2012-06-26 | 2012-12-26 | $7700.00 | Window Closed / Lapsed |