CA2254884A1 - Switching system with selection of broadband services via an intelligent network - Google Patents
Switching system with selection of broadband services via an intelligent network Download PDFInfo
- Publication number
- CA2254884A1 CA2254884A1 CA002254884A CA2254884A CA2254884A1 CA 2254884 A1 CA2254884 A1 CA 2254884A1 CA 002254884 A CA002254884 A CA 002254884A CA 2254884 A CA2254884 A CA 2254884A CA 2254884 A1 CA2254884 A1 CA 2254884A1
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- detection point
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- service
- services
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/10—Packet switching elements characterised by the switching fabric construction
- H04L49/104—Asynchronous transfer mode [ATM] switching fabrics
- H04L49/105—ATM switching elements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
- H04M3/4228—Systems providing special services or facilities to subscribers in networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
- H04Q11/0428—Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
- H04Q11/0478—Provisions for broadband connections
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0016—Arrangements providing connection between exchanges
- H04Q3/0029—Provisions for intelligent networking
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/54—Store-and-forward switching systems
- H04L12/56—Packet switching systems
- H04L12/5601—Transfer mode dependent, e.g. ATM
- H04L2012/5625—Operations, administration and maintenance [OAM]
- H04L2012/5626—Network management, e.g. Intelligent nets
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/54—Store-and-forward switching systems
- H04L12/56—Packet switching systems
- H04L12/5601—Transfer mode dependent, e.g. ATM
- H04L2012/5629—Admission control
- H04L2012/563—Signalling, e.g. protocols, reference model
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Telephonic Communication Services (AREA)
Abstract
In a switching network which supports the switching of broadband services, a call controlling function CCF and a service connection function SSF are located in a switching node in separate units which are connected by an interface. This arrangement results in a simple and inexpensive implementation of broadband intelligent network services in the switching system.
Description
CA 022~4884 1998-11-13 SWITCHING SYSTEM WITH SELECTION OF BROADBAND
SERVICES VIA INTELLIGENT NETWORKS
The expansion of switched networks by the functionality of intelligent services leads to what are referred to as intelligent networks IN wherein an intelligent service call outgoing from an arbitrary subscriber terminal equipment initiates the setup of a more or less complex connection configuration according to the provision of the provider of the intelligent service. In a simple case, the functionality of an intelligent service is essentially established by a telephone number revaluation, through-connection is 0 undertaken to a specific reception location dependent, for example, on the time of day and location of the outgoing call. Let the following be cited as examplesof intelligent network services:
Connections that are fee of charge for the calling subscriber terminal equipment(0130 telephone numbers in the switching network of Deutsche Telekom);
Connections wherein the calling subscriber terminal equipment is charges the fees for a corresponding local call regardless of the distance and the time of day (0180 telephone numbers in the switching network of Deutsche Telekom); or Connections with a special service wherein the calling subscriber terminal equipment is charged fees for a corresponding local call (0180 [sic] telephone 2 0 numbers in the switching network of Deutsche Telekom).
Let the switching network forward data present in digitalized form in message cells with a fixed length according to an asynchronous transmission method, preferably according to the ATM (Asynchronous Transfer Mode) trancmicsion method.
2 5 The subject matter of the application is directed to a switching systemfor the selection of an intelligent network service by a subscriber terminal equipment according to the preamble of claims 1, 5, 6, 7 or, respectively, 8.
A switching system with the indicated features is known from the ITU-T (Telecommunication Standardization Sector of International 3 o Telecommunication Union) Recommendation Q121 ~. This recommendation CA 022~4884 1998-11-13 provides recomm~n(~ Itions on the level of function models for intelligent services in narrowband networks.
The subject matter of the application is based on the problem of creating a switching system, particularly, too, a switching system for the through-5 connection of broadband services, whereby an expandability by thefunctionality of intelligent services is accompanied by low modification requirements at units that already exist.
The sub)ect matter of the apphcatlon ls also based on the problem of creating a switching system comprising the functionality for intelligent services, 10 particularly a switching system for the through-connection of broadband services as well, whereby the individual functional units exhibit little complexity.
In the switching system comprising the features of the preamble, the problem is solved by the features of the characterizing part of Claim 1, 5, 6, 7, or, respectively, 8.
The far-reaching separation of call control function and services through-connect function yields a simple expandability of a switching node that has hitherto not been capable of intelligent services by the functionality of a capability for executing intelligent service. It can thereby be advantageously 2 o noticed that the interface between call control function and services through-connect function can be kept very small, and the outlay for modifications in thepreviously existing call control function for adaptation to the new functionality remains slight. The call control function CCF of a switching node that allows the application's through-connection of intelligent network services comprises 2 5 no new control properties compared to a call control function of a switchingnode that does not allow a through-connection of intelligent network services.
The division of the call control function CCF and the services through-connection function SSF into separate classes of software makes it possible, first, to avoid mixed forms of functional units that comprise functionalities of3 o another functional unit and, second, opens up the possibility of implementing CA 022~4884 1998-11-13 the call control function CCF on one hardware platform and the services through-connect function SSF on another hardware platform.
According to a particular embodiment of the subject matter of the application, a detectionpoint is reported to the services through-connect function by the call control function. This measure makes it possible for the call control function to be kept free of processing events triggered bv the detectionpoint or, respectively, that the processing of events specific to intelligent services ensues independently of the call control function. These measures assume that every possible detectionpoint is reported to the service 0 through-connect function by the call control function.
The subject matter of the application is described in greater detail below in a scope necess~ry for understanding as an exemplary embodiment with reference to drawings. Thereby shown are:
Figure 1 a srh~m ltiC illustration of a switching network with a switching node SSP 1 to which a subscriber equipment TE and a services control point SCP are connected;
Figure 2 an object diagram for the object model of the services through-connect function SSF shown in Figure 1 in the switching node;
Figure 3 a time sequence plan with reference to the example of a setup of 2 o an IN call; and Figure 4 a time sequence plan with reference to the example of a cleardown of an IN call.
Figure 1 shows an IN switching network (intelligent services network, intelligent network), whereby a local switching node SSP 1 (for: service 2 5 switching point) is connected via an interface INAP (intelligent network application protocol) to a service control point SCP and a remote switching node SSP 2. Exemplary subscriber terminal equipment TE1 or, respectively, TE2, which can be assumed to be established by terminal equipment suitable for broadband services, are respectively connected to the switching nodes. A
3 o switching node comprises a call control function CCF shown as a block and a services through-connect function SSF (for: service switching function) shown CA 022~4884 1998-11-13 as a block. The service control point comprises a service control function SCF
shown as a block that, for example, effects the through-connection of a call that is free of charge for the calling subscriber terminal equipment. By outputting selection identifiers, a subscriber terminal equipment connected to the 5 switching network is capable of selecting an intelligent network broadband service such as, for example, the tr~ncmiccion of a video sequence in real time.The remote switching node SSP 2 is constructed the same as the local switching node SSP 1, with the difference that the switching node SSP 2 does not comprise a direct connection to the service control point SCP. The subscriber 10 terminal equipment TE 2 connected to the switching node SSP 2 is capable of selecting an intelligent network service in the service control point SCP via the connection between the switching node SSP 2 and the switching node SSP 1.
The object diagram according to Figure 2 employs the OMT (Object _odelling Technique) notation of Rumbaugh. The blocks represent classes in lS the sense of object-oriented progr~mming (OOP), whereby the classes shown without shadow belong to the services through-connect function SSF and the classes shown with shadow do not belong to the services through-connect function but are in communication with the services through-connect function.
The call control function CCF and the services through-connect function SSF
2 o are divided into separate classes of software.
According to the ITU-T Recommendation Q.1214, a basic call state model BCSM that comprises detection points DP is allocated to every object call control CC, which stands for a call. When a detection point is reached during a call, the call control CC informs a detection point manager DP-M.
2 5 Every possible detection point is thus reported to the services through-connect function SSF by the call control function CCF.
The detection point manager DP-M determines whether the affected detection point DP is equipped either as event detection point EDP or as trigger detection point TDP. The call control CC itself can decide whether it 3 o allows an influencing of the call by the service control point SCP by calling the method 'inquiry to the service control point' (SCP request) in the detection . , . .. . I ., CA 022~4884 1998-11-13 point manager DP-M and assumption of a waiting or whether a message can be merely given to the service control point SCP by calling the method 'notification of the service control point' (SCP notification) in the detection point manager DP-M. In the case of a message to the service control point 5 SCP, the call control CC can continue the call handling without influencing bythe service control point SCP. It is advantageous in this approach that the interface between the call control function CCF and the services through-connect function SSF is as small as possible.
The detection point manager DP-M handles the detection points DP in 0 detail. First the detection point manager DP-M asks the trigger detection point manager TDP-M whether a specific detection point DP is equipped as trigger detection point. The trigger detection point manager TDP-M checks the criteria for a trigger detection point TDP and reports all trigger detection points TDP that meet the criteria to the detection point manager DP-M. The 15 criteria are [...] by the criteria provided in the ITU-T Recommendation Q1214, Section 4.2.2.4. It is permitted to report a plurality of trigger detection point notification TDP-N but only one trigger detection point request TDP-R. That the reporting of only one trigger detection point request TDP-R is permitted is not to be seen as a limitation because, according to to the ITU-T
2 0 Recommendation Q. 1214, only one control relationship is permitted between a call and the service control point SCP.
When a trigger detection point request TDP-R is reported and a request (answerback) is expected from the call control CC, the trigger point manager DP-M initiates an intelligent service control relationship (IN service control 2 5 relationship) between the call and an intelligent service (IN service) by producing a new object, service control point transaction SCP-T. The detection points DPs equipped as event detection point EDP of trigger detection point TDP, what are referred to as armed detection points, comprise all information for a communication with the service control point SCP; the 3 0 detection point manager DP-M thus routes the appertaining object, trigger detection point, to the object service control point transaction. These CA 022~4884 1998-11-13 information are made available for a trigger detection point TDP by an ~mini~tration means (~clminictration) in the switching node.
During a control relationship, the service control point has the possibility of equipping detection point DPs as event detection points EDP.
Seen from the point of view of the call control CC, there is no difference between event detection points EDP and trigger detection points TDP;
however, the detection point manager DP-M determines how a detection point DP is equipped. The information that an detection point DP is equipped as trigger detection point TDP is made available by the trigger detection point 0 manager TDP-M. The information that a detection point DP is equipped as event detection point EDP is locally stored in an event detection point table EDP-T within the detection point manager DP-M. The service control point transaction (SCP transaction) object fills the event detection table EDP T [sic]by calling the method, equipping detection point, in the detection point manager DP-M. This approach is marked by the fact that trigger detection points TDPs are valid for all calls and event detection points EDPs are related to a specific call.
The detection points DP thus exhibit a hierarchic structure. The detection points DP are to be interpreted as information carriers with which a 2 0 plurality of service control points SCP of a switching network may possibly communicate.
The detection point manager DP-M is thus arranged outside the call control function CCF. Given the expansion of a switching node with a traditional call control function by the functionality of the inventive capability 2 5 for intelligent services, thus, the changes are essentially limited to reporting when specific detection points are reached to the detection point manager and waiting for instructions.
A cign~lling channel is used for the communication of the services through-connect point SSP with the service control point SCP. The 3 o communication between the services through-connect point SSP and service control point SCP ensues in the same way as the communication between the services through-connect point SSP and a subscriber terminal equipment TE.
Both said types of communication thereby advantageously share a majority of procedures (m~h~ni~ms) such as, for example, the handling of the layer 2 protocol stack from the OSI 7-layer model.
Progressing in time from top to bottom, Figure 3 shows the executive sequences in the individual units with reference to the example of a request foran intelligent network service. At point (1), the subscriber terminal equipment enters into communication with the call control CC at the request of, for example, the subscriber terminal equipment TE 1. At point (2), the call control sets up a new detection point manager. At time (3), a new event detection point table EDP-T is constructed. At point (4), a trigger detection point request TDP-R is reached in the call control CC and a request for the service control point SCP is communicated to the detection point manager DP-M.
The interrogation and report of a trigger detection point TDP ensues at point (5). At point (6), a newly found trigger detection point TDP is entered in the trigger detection point manager DP-M. At point (7), a new object, service control point transaction SCP-T, is produced for generating an intelligent service control relationship between the call and an intelligent service. At point (8), the detection point manager DP-M enters into communication with the 2 0 service control point transaction means SCP-T for the start of the service control point transaction. At point (9), the service control point transaction means SCP-T commnnic~tes service control point-specific information to the trigger detection point TDP. At point (10), the service control point transaction means SCP-T reports and, thus, initializes the detection point DP to2 5 the service control point SCP. At point (11), the trigger detection point DP[sic] is discarded since its job has been carried out. At point (12), an request for notification about events within the base call state model (RequestReportBCSMEvent) ensues during the course of a message from the service control point SCP to the service control point transaction means SCP-3 o T. A new event detection point EDP is established at point (13). At point (14), a detection point DP is equipped as event detection point EDP during the CA 022~4884 1998-11-13 course of a message from the service control point transaction means SCP-T to the detection point manager DP-M. At point (15), the detection point manager DP-M enters the event detection point EDP [...] the event detection point table EDP-T. At point (16), a request of the service control point SCP ensues to the 5 service control point transaction means SCP-T to connect the appertaining callto a specific subscriber terminal equipment. At point (17), an answerback ensues from the service control point transaction means SCP-T to the call control CC.
Progressing in time from top to bottom, Figure 4 shows the executive 10 sequences in the individual units of an intelligent services network with reference to the example of an intelligent service connection triggered by a subscriber terminal equipment. At point (21), the existing connection is cleareddown at the initiative of the subscriber terminal equipment. At point (22), the call control means CC sends a message SCP_Notification to the detection point manager DP-M. At point (23), the detection point manager DP-M seeks the corresponding event detection point entry in the event detection point table EDP-T and potentially deletes it (Get_and_Delete). At point (24), the detection point manager DP-M sends a notification message (Send_Notification) to the service control point means SCP-T. At point (25), the service control point 2 o transaction means SCP-T reads information about the service control point SCP from the event detection point EDP (Give_SCP_Information). At point (26), the service control point transaction means SCP-T sends a message about reaching an event detection point (EventReportBCSM) to the service control point SCP. At point (27), the event detection point EDP valid at the moment 2 5 is discarded. At point (28), the termination of the object, service control point transaction (SCP-Transaction), valid at the moment is initiated by a message (End_SCP_Transaction) sent by the detection point manager DP-M to the service control point detection means SCP-T. At point (29), [...] in the event detection point table means EDP-T is deleted and removed. At point (30), the 3 0 detection point manager means DP-M is deleted.
SERVICES VIA INTELLIGENT NETWORKS
The expansion of switched networks by the functionality of intelligent services leads to what are referred to as intelligent networks IN wherein an intelligent service call outgoing from an arbitrary subscriber terminal equipment initiates the setup of a more or less complex connection configuration according to the provision of the provider of the intelligent service. In a simple case, the functionality of an intelligent service is essentially established by a telephone number revaluation, through-connection is 0 undertaken to a specific reception location dependent, for example, on the time of day and location of the outgoing call. Let the following be cited as examplesof intelligent network services:
Connections that are fee of charge for the calling subscriber terminal equipment(0130 telephone numbers in the switching network of Deutsche Telekom);
Connections wherein the calling subscriber terminal equipment is charges the fees for a corresponding local call regardless of the distance and the time of day (0180 telephone numbers in the switching network of Deutsche Telekom); or Connections with a special service wherein the calling subscriber terminal equipment is charged fees for a corresponding local call (0180 [sic] telephone 2 0 numbers in the switching network of Deutsche Telekom).
Let the switching network forward data present in digitalized form in message cells with a fixed length according to an asynchronous transmission method, preferably according to the ATM (Asynchronous Transfer Mode) trancmicsion method.
2 5 The subject matter of the application is directed to a switching systemfor the selection of an intelligent network service by a subscriber terminal equipment according to the preamble of claims 1, 5, 6, 7 or, respectively, 8.
A switching system with the indicated features is known from the ITU-T (Telecommunication Standardization Sector of International 3 o Telecommunication Union) Recommendation Q121 ~. This recommendation CA 022~4884 1998-11-13 provides recomm~n(~ Itions on the level of function models for intelligent services in narrowband networks.
The subject matter of the application is based on the problem of creating a switching system, particularly, too, a switching system for the through-5 connection of broadband services, whereby an expandability by thefunctionality of intelligent services is accompanied by low modification requirements at units that already exist.
The sub)ect matter of the apphcatlon ls also based on the problem of creating a switching system comprising the functionality for intelligent services, 10 particularly a switching system for the through-connection of broadband services as well, whereby the individual functional units exhibit little complexity.
In the switching system comprising the features of the preamble, the problem is solved by the features of the characterizing part of Claim 1, 5, 6, 7, or, respectively, 8.
The far-reaching separation of call control function and services through-connect function yields a simple expandability of a switching node that has hitherto not been capable of intelligent services by the functionality of a capability for executing intelligent service. It can thereby be advantageously 2 o noticed that the interface between call control function and services through-connect function can be kept very small, and the outlay for modifications in thepreviously existing call control function for adaptation to the new functionality remains slight. The call control function CCF of a switching node that allows the application's through-connection of intelligent network services comprises 2 5 no new control properties compared to a call control function of a switchingnode that does not allow a through-connection of intelligent network services.
The division of the call control function CCF and the services through-connection function SSF into separate classes of software makes it possible, first, to avoid mixed forms of functional units that comprise functionalities of3 o another functional unit and, second, opens up the possibility of implementing CA 022~4884 1998-11-13 the call control function CCF on one hardware platform and the services through-connect function SSF on another hardware platform.
According to a particular embodiment of the subject matter of the application, a detectionpoint is reported to the services through-connect function by the call control function. This measure makes it possible for the call control function to be kept free of processing events triggered bv the detectionpoint or, respectively, that the processing of events specific to intelligent services ensues independently of the call control function. These measures assume that every possible detectionpoint is reported to the service 0 through-connect function by the call control function.
The subject matter of the application is described in greater detail below in a scope necess~ry for understanding as an exemplary embodiment with reference to drawings. Thereby shown are:
Figure 1 a srh~m ltiC illustration of a switching network with a switching node SSP 1 to which a subscriber equipment TE and a services control point SCP are connected;
Figure 2 an object diagram for the object model of the services through-connect function SSF shown in Figure 1 in the switching node;
Figure 3 a time sequence plan with reference to the example of a setup of 2 o an IN call; and Figure 4 a time sequence plan with reference to the example of a cleardown of an IN call.
Figure 1 shows an IN switching network (intelligent services network, intelligent network), whereby a local switching node SSP 1 (for: service 2 5 switching point) is connected via an interface INAP (intelligent network application protocol) to a service control point SCP and a remote switching node SSP 2. Exemplary subscriber terminal equipment TE1 or, respectively, TE2, which can be assumed to be established by terminal equipment suitable for broadband services, are respectively connected to the switching nodes. A
3 o switching node comprises a call control function CCF shown as a block and a services through-connect function SSF (for: service switching function) shown CA 022~4884 1998-11-13 as a block. The service control point comprises a service control function SCF
shown as a block that, for example, effects the through-connection of a call that is free of charge for the calling subscriber terminal equipment. By outputting selection identifiers, a subscriber terminal equipment connected to the 5 switching network is capable of selecting an intelligent network broadband service such as, for example, the tr~ncmiccion of a video sequence in real time.The remote switching node SSP 2 is constructed the same as the local switching node SSP 1, with the difference that the switching node SSP 2 does not comprise a direct connection to the service control point SCP. The subscriber 10 terminal equipment TE 2 connected to the switching node SSP 2 is capable of selecting an intelligent network service in the service control point SCP via the connection between the switching node SSP 2 and the switching node SSP 1.
The object diagram according to Figure 2 employs the OMT (Object _odelling Technique) notation of Rumbaugh. The blocks represent classes in lS the sense of object-oriented progr~mming (OOP), whereby the classes shown without shadow belong to the services through-connect function SSF and the classes shown with shadow do not belong to the services through-connect function but are in communication with the services through-connect function.
The call control function CCF and the services through-connect function SSF
2 o are divided into separate classes of software.
According to the ITU-T Recommendation Q.1214, a basic call state model BCSM that comprises detection points DP is allocated to every object call control CC, which stands for a call. When a detection point is reached during a call, the call control CC informs a detection point manager DP-M.
2 5 Every possible detection point is thus reported to the services through-connect function SSF by the call control function CCF.
The detection point manager DP-M determines whether the affected detection point DP is equipped either as event detection point EDP or as trigger detection point TDP. The call control CC itself can decide whether it 3 o allows an influencing of the call by the service control point SCP by calling the method 'inquiry to the service control point' (SCP request) in the detection . , . .. . I ., CA 022~4884 1998-11-13 point manager DP-M and assumption of a waiting or whether a message can be merely given to the service control point SCP by calling the method 'notification of the service control point' (SCP notification) in the detection point manager DP-M. In the case of a message to the service control point 5 SCP, the call control CC can continue the call handling without influencing bythe service control point SCP. It is advantageous in this approach that the interface between the call control function CCF and the services through-connect function SSF is as small as possible.
The detection point manager DP-M handles the detection points DP in 0 detail. First the detection point manager DP-M asks the trigger detection point manager TDP-M whether a specific detection point DP is equipped as trigger detection point. The trigger detection point manager TDP-M checks the criteria for a trigger detection point TDP and reports all trigger detection points TDP that meet the criteria to the detection point manager DP-M. The 15 criteria are [...] by the criteria provided in the ITU-T Recommendation Q1214, Section 4.2.2.4. It is permitted to report a plurality of trigger detection point notification TDP-N but only one trigger detection point request TDP-R. That the reporting of only one trigger detection point request TDP-R is permitted is not to be seen as a limitation because, according to to the ITU-T
2 0 Recommendation Q. 1214, only one control relationship is permitted between a call and the service control point SCP.
When a trigger detection point request TDP-R is reported and a request (answerback) is expected from the call control CC, the trigger point manager DP-M initiates an intelligent service control relationship (IN service control 2 5 relationship) between the call and an intelligent service (IN service) by producing a new object, service control point transaction SCP-T. The detection points DPs equipped as event detection point EDP of trigger detection point TDP, what are referred to as armed detection points, comprise all information for a communication with the service control point SCP; the 3 0 detection point manager DP-M thus routes the appertaining object, trigger detection point, to the object service control point transaction. These CA 022~4884 1998-11-13 information are made available for a trigger detection point TDP by an ~mini~tration means (~clminictration) in the switching node.
During a control relationship, the service control point has the possibility of equipping detection point DPs as event detection points EDP.
Seen from the point of view of the call control CC, there is no difference between event detection points EDP and trigger detection points TDP;
however, the detection point manager DP-M determines how a detection point DP is equipped. The information that an detection point DP is equipped as trigger detection point TDP is made available by the trigger detection point 0 manager TDP-M. The information that a detection point DP is equipped as event detection point EDP is locally stored in an event detection point table EDP-T within the detection point manager DP-M. The service control point transaction (SCP transaction) object fills the event detection table EDP T [sic]by calling the method, equipping detection point, in the detection point manager DP-M. This approach is marked by the fact that trigger detection points TDPs are valid for all calls and event detection points EDPs are related to a specific call.
The detection points DP thus exhibit a hierarchic structure. The detection points DP are to be interpreted as information carriers with which a 2 0 plurality of service control points SCP of a switching network may possibly communicate.
The detection point manager DP-M is thus arranged outside the call control function CCF. Given the expansion of a switching node with a traditional call control function by the functionality of the inventive capability 2 5 for intelligent services, thus, the changes are essentially limited to reporting when specific detection points are reached to the detection point manager and waiting for instructions.
A cign~lling channel is used for the communication of the services through-connect point SSP with the service control point SCP. The 3 o communication between the services through-connect point SSP and service control point SCP ensues in the same way as the communication between the services through-connect point SSP and a subscriber terminal equipment TE.
Both said types of communication thereby advantageously share a majority of procedures (m~h~ni~ms) such as, for example, the handling of the layer 2 protocol stack from the OSI 7-layer model.
Progressing in time from top to bottom, Figure 3 shows the executive sequences in the individual units with reference to the example of a request foran intelligent network service. At point (1), the subscriber terminal equipment enters into communication with the call control CC at the request of, for example, the subscriber terminal equipment TE 1. At point (2), the call control sets up a new detection point manager. At time (3), a new event detection point table EDP-T is constructed. At point (4), a trigger detection point request TDP-R is reached in the call control CC and a request for the service control point SCP is communicated to the detection point manager DP-M.
The interrogation and report of a trigger detection point TDP ensues at point (5). At point (6), a newly found trigger detection point TDP is entered in the trigger detection point manager DP-M. At point (7), a new object, service control point transaction SCP-T, is produced for generating an intelligent service control relationship between the call and an intelligent service. At point (8), the detection point manager DP-M enters into communication with the 2 0 service control point transaction means SCP-T for the start of the service control point transaction. At point (9), the service control point transaction means SCP-T commnnic~tes service control point-specific information to the trigger detection point TDP. At point (10), the service control point transaction means SCP-T reports and, thus, initializes the detection point DP to2 5 the service control point SCP. At point (11), the trigger detection point DP[sic] is discarded since its job has been carried out. At point (12), an request for notification about events within the base call state model (RequestReportBCSMEvent) ensues during the course of a message from the service control point SCP to the service control point transaction means SCP-3 o T. A new event detection point EDP is established at point (13). At point (14), a detection point DP is equipped as event detection point EDP during the CA 022~4884 1998-11-13 course of a message from the service control point transaction means SCP-T to the detection point manager DP-M. At point (15), the detection point manager DP-M enters the event detection point EDP [...] the event detection point table EDP-T. At point (16), a request of the service control point SCP ensues to the 5 service control point transaction means SCP-T to connect the appertaining callto a specific subscriber terminal equipment. At point (17), an answerback ensues from the service control point transaction means SCP-T to the call control CC.
Progressing in time from top to bottom, Figure 4 shows the executive 10 sequences in the individual units of an intelligent services network with reference to the example of an intelligent service connection triggered by a subscriber terminal equipment. At point (21), the existing connection is cleareddown at the initiative of the subscriber terminal equipment. At point (22), the call control means CC sends a message SCP_Notification to the detection point manager DP-M. At point (23), the detection point manager DP-M seeks the corresponding event detection point entry in the event detection point table EDP-T and potentially deletes it (Get_and_Delete). At point (24), the detection point manager DP-M sends a notification message (Send_Notification) to the service control point means SCP-T. At point (25), the service control point 2 o transaction means SCP-T reads information about the service control point SCP from the event detection point EDP (Give_SCP_Information). At point (26), the service control point transaction means SCP-T sends a message about reaching an event detection point (EventReportBCSM) to the service control point SCP. At point (27), the event detection point EDP valid at the moment 2 5 is discarded. At point (28), the termination of the object, service control point transaction (SCP-Transaction), valid at the moment is initiated by a message (End_SCP_Transaction) sent by the detection point manager DP-M to the service control point detection means SCP-T. At point (29), [...] in the event detection point table means EDP-T is deleted and removed. At point (30), the 3 0 detection point manager means DP-M is deleted.
Claims (4)
1. Method for setting up an intelligent service, particularly a broadband service, in a switching node (SSP), whereby A) the switching node comprises and call control function (CCF) means and a services through-connect function (SSF), whereby a) the call control function is arranged in a functional unit formed with a first class of software, b) the services through-connect function is arranged in a functional unit formed with a second class of software, and c) the two functional units are connected to one another by an interface, B) the switching node is connected to a service control point, C) the service control point (SCP) comprises a service control function (SCF) that realizes an intelligent service, in accord wherewith at least one detection point (DP) is selected in the call control function during the course of a call particularly in the call setup, characterized in that each detection point (DP) that is selected during the course of a call is reported exclusively to a detection point manager (DP-M) arranged outside the call control function.
2. Method according to claim 1, characterized in that the detection point is handled outside the call control function.
3. Method according to claim 1 or claim 2, characterized in that the processing of intelligent service specific events ensues independently of the call control function.
4. Method according to one of the preceding claims, characterized in that the call control function means is kept free of processing events triggeredby the detection point.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1996119800 DE19619800C2 (en) | 1996-05-15 | 1996-05-15 | Switching system with selection of broadband services via intelligent networks |
| DE19619800.3 | 1996-05-15 | ||
| PCT/DE1997/000965 WO1997043868A1 (en) | 1996-05-15 | 1997-05-13 | Switching system with selection of broadband services via an intelligent network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2254884A1 true CA2254884A1 (en) | 1997-11-20 |
Family
ID=7794501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002254884A Abandoned CA2254884A1 (en) | 1996-05-15 | 1997-05-13 | Switching system with selection of broadband services via an intelligent network |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0898854A1 (en) |
| CA (1) | CA2254884A1 (en) |
| DE (1) | DE19619800C2 (en) |
| WO (1) | WO1997043868A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW548483B (en) | 1998-09-02 | 2003-08-21 | Seiko Epson Corp | Light source and the display device |
| DE102004015847A1 (en) * | 2004-03-31 | 2005-10-27 | Siemens Ag | Re-addressing method for service logistics in a mobile radiotelephone network with an intelligent service environment uses original and alternative service logistics addresses via an exchange |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2694466B1 (en) * | 1992-07-29 | 1994-09-02 | Cit Alcatel | Telecommunication network carrying out call processing and connection processing separately. |
| SE470545B (en) * | 1992-11-26 | 1994-07-25 | Ellemtel Utvecklings Ab | Modular system of sub-functions |
-
1996
- 1996-05-15 DE DE1996119800 patent/DE19619800C2/en not_active Expired - Fee Related
-
1997
- 1997-05-13 WO PCT/DE1997/000965 patent/WO1997043868A1/en not_active Application Discontinuation
- 1997-05-13 EP EP97923812A patent/EP0898854A1/en not_active Withdrawn
- 1997-05-13 CA CA002254884A patent/CA2254884A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| EP0898854A1 (en) | 1999-03-03 |
| WO1997043868A1 (en) | 1997-11-20 |
| DE19619800C2 (en) | 1998-05-20 |
| DE19619800A1 (en) | 1997-11-27 |
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| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |