Patent EP0487811A1 successfully refreshed from Google Patents.
EP0487811A1
Expired / Lapsed
EP
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Digital telecommunication system with intelligent user terminals
Assignee: Nokia Bell NV
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Filing: 1990-11-29
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Granted: —
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Expires: 2010-11-29
Abstract
Abstract An Asynchronous Transfert Mode (ATM) digital telecommunication system including a Broadband Integrated Services Digital Network (B-ISDN, DSN), a plurality of intelligent user terminals (IT1-4) coupled thereto and control means (TCSI, TCAI) for performing basic and enhanced operations. The basic operations consist of establishing/ releasing a plurality of user connections for transmitting either user information or control information between the terminals, whilst the enhanced operations concern user facilities which are controlled by dedicated control means (TCAI) exclusively located in these terminals. Enhanced operations such as "remote execution" which consists of using by a terminal (IT1) dedicated control means located in another terminal (IT2) and "call forward" which consists of rerouting a call from a calling terminal (IT1) to a second terminal (IT2) towards a third terminal (IT3) are disclosed as well as a method for performing this call forward.
Inventors
- 👤 Patrick Maria Jozef Hellemans
- 👤 Rik Achiel Verstraete
- 👤 Hubert Jerôme Martin Decuypere
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 05:29
CPC Classifications
H; H04; H04Q; H04Q11/00; H04Q11/04; H04Q11/0428; H04Q11/0478; H04M; H04M1/00; H04M1/006; H04M1/247; H04L; H04L12/00; H04L12/54; H04L12/56; H04L12/5601; H04L2012/5614; H04L2012/5616; H04L2012/5629; H04L2012/563
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
77 words
Digital telecommunication system including a digital switching network (DSN), a plurality of user terminals (IT1-4) coupled to said switching network, and control means (TCSI, TCAI) for performing basic and enhanced operations, said basic operations consisting of establishing and releasing user data connections between said user terminals (IT1-4) and said enhanced operations being different from said basic operations, characterized in that said enhanced operations are controlled by dedicated control means (TCAI) exclusively located in said user terminals (IT1-4).
Claim 2
Dependent Claim
33 words
Digital telecommunication system according to claim 1, characterized in that said basic operations consist of establishing/ releasing a plurality of said user data connections between at least two of said user terminals (IT1-4).
Claim 3
Dependent Claim
26 words
Digital telecommunication system according to claim 2, characterized in that said user data connections transmit either user information or control information between said user terminals (IT1-4).
Claim 4
Dependent Claim
47 words
Digital telecommunication system according to claim 3, characterized in that at least one of said user data connections is used to transfer said user information, whilst at least another one of said user data connections is used to transfer said control information between said user terminals (IT1-4).
Claim 5
Dependent Claim
36 words
Digital telecommunication system according to claim 1, characterized in that said user data connections link dedicated control means (TCAI) of a first user terminal (IT1) with dedicated control means (TCAI) of a second user terminal (IT2).
Claim 6
Dependent Claim
23 words
Digital telecommunication system according to claim 1, characterized in that said digital switching network (DSN) is a Broadband Integrated Services Digital Network (B-ISDN).
Claim 7
Dependent Claim
26 words
Digital telecommunication system according to the claim 1, characterized in that said user data connections transmit data according to the Asynchronous Transfert Mode (ATM) switching technique.
Claim 8
Dependent Claim
60 words
Digital telecommunication system according to claim 1, characterized in that one of said enhanced operations is a remote execution operation which consists of using by a first terminal (IT1) dedicated control means (TCAI) located in a second terminal (IT2), each of said first and second terminals including a remote execution dedicated control means (RE-TCAI) for performing said remote execution operation.
Claim 9
Dependent Claim
62 words
Digital telecommunication system according to claim 1, characterized in that one of said enhanced operations is a call forward operation which consists of rerouting a call from a calling terminal (IT1) to a second terminal (IT2) towards a third terminal (IT3), each of said calling and second terminals including a call forward dedicated control means (CF-TCAI) for performing said call forward operation.
Claim 10
Dependent Claim
129 words
Method for performing a call forward operation (CF-TCAI) which consists of rerouting a call from a calling terminal (IT1) to a second terminal (IT2) towards a third terminal (IT3), characterized in that said method includes: - a first step of activating in said second terminal (IT2) first call forward control means (CF-TCAI-B1) for indicating to any incoming call that the latter has to be rerouted to said third terminal (IT3); - a second step of handling each call arriving in said second terminal (IT2) by said first call forward control means which activates second call forward control means (CF-TCAI-A1) in said calling terminal (IT1) and transfers references of said third terminal thereto; and - a third step of calling said third terminal by said second call forward control means.
Claim 11
Dependent Claim
34 words
Method according to claim 10, characterized in that said second call forward control means (CF-TCAI-A1) informs the user (A) of said calling terminal (IT1) of the rerouting and provides said references to said user.
Claim 12
Dependent Claim
24 words
Method according to claim 11, characterized in that said third step is executed upon authorization of said user (A) of said calling terminal (IT1).
Claim 13
Dependent Claim
39 words
Method according to claim 10, characterized in that another said first call forward control means (CF-TCAI-B1) is activated in said third terminal (IT3) in order to further reroute said call from said calling terminal (IT1) towards a fourth terminal.
Claim 14
Dependent Claim
48 words
Method according to claim 13, characterized in that said second call forward control means (CF-TCAI-A1) keeps a history table of said references given by the first call forward control means (CF-TCAI-B1) of the rerouting terminals (IT2, IT3) associated with a same call in order to detect routing loops.
References Cited (Backward Citations)
EP0238255A2
Cited
EP0365200A2
Cited
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