Method and a system for use in a telecommunications network

A method in a telecommunication network, in which a subscriber connected to an originating local exchange node has requested activation of a supplementary service located in an application of said originating node, wherein said supplementary service uses a Transaction Capability Application Part TCAP and a corresponding Abstract Service Element ASE for establishing an end-to-end Transaction Capability TC-dialogue, having a transaction ID, with the corresponding supplementary service in an application of a destination local exchange node to which an addressed remote subscriber is connected, and said TC-dialogue terminates the request on an interfering telecommunication service located in an application of an intermediate node,

• the method for enabling a network operator to prevent service operation failure when there is an interaction between said end-to-end TCAP based supplementary service and said interfering telecommunication service, wherein the method comprises:
• a) establishing a relay link between an incoming TC-dialogue and an outgoing TC-dialogue at the intermediate node for providing a chain of end-to-end TC-dialogues between the originating local exchange node and the destination local exchange node, while using a transparent relay functionality being independent of utilizing TCAP based supplementary service ASEs at intermediate nodes,
• b) differentiating handling and continuity of the chained dialogues based on the effect of the interaction caused by said interfering telecommunication service;
• performing in the intermediate node, in response to reception of an incoming TC-dialogue request related to a TCAP based supplementary service having a dedicated SubSystem Number SSN, and based on an analysis of the requested TCAP based supplementary service identity, as identified by a specific supplementary service Object Identifier OID, and calling and called party address information sent together with the request, the steps of:
• i) triggering the transparent relay functionality in case either the OID is not recognized by the intermediate node, or the called party address information does not address a subscriber connected to the intermediate node,
• ii) initiating a TC-relay link procedure comprising preservation of the received TC-dialogue ID and sending of a query for number translation by communicating the called and calling party address information and the supplementary service ASE of the received TC-dialogue to the interfering telecommunication service,
• iii) analysing the received query and determining by the interfering telecommunication service the new called party address information and the effect of the interaction with the TCAP based supplementary service as identified by the received OID, and
• iv) accomplishing the TC-relay link procedure comprising establishing an outgoing TC-dialogue based on the received called party address information and the supplementary service ASE from the interfering telecommunication service, and building an association between the incoming and the outgoing TC-dialogues ID based on a received indication for handling of the TC-dialogue continuity.

A method in a telecommunication network, in which a subscriber connected to an originating local exchange node has requested activation of a supplementary service located in an application of said originating node, wherein said supplementary service uses a Transaction Capability Application Part TCAP and a corresponding Abstract Service Element ASE for establishing an end-to-end Transaction Capability TC-dialogue, having a transaction ID, with the corresponding supplementary service in an application of a destination local exchange node to which an addressed remote subscriber is connected, and said TC-dialogue terminates the request on an interfering telecommunication service located in an application of an intermediate node,

• the method for enabling a network operator to prevent service operation failure when there is an interaction between said end-to-end TCAP based supplementary service and said interfering telecommunication service, wherein the method comprises:
• a) establishing a relay link between an incoming TC-dialogue and an outgoing TC-dialogue at the intermediate node for providing a chain of end-to-end TC-dialogues between the originating local exchange node and the destination local exchange node, while using a transparent relay functionality being independent of utilizing TCAP based supplementary service ASEs at intermediate nodes,
• b) differentiating handling and continuity of the chained dialogues based on the effect of the interaction caused by said interfering telecommunication service;
• providing, for the step of differentiating the handling and continuity of the chained dialogues, an indication by the interfering telecommunication service on whether the TC-link relay functionality should use a Single Association Control Function SACF to establish a simple and single association between the incoming and the outgoing TC-dialogues, or a Multiple Association Control Function MACF to establish a multiple association using two SACFs between the incoming and the outgoing TC-dialogues.

A system in a telecommunication network, in which a subscriber connected to an originating local exchange node has requested activation of a supplementary service located in an application of said originating node, said supplementary service uses a Transaction Capability Application Part TCAP and a corresponding Abstract Service Element ASE for establishing an end-to-end Transaction Capability TC-dialogue, having a transaction ID, with the corresponding supplementary service in an application of a destination local exchange node to which an addressed remote subscriber is connected, and said TC-dialogue terminates the request on an interfering telecommunication service located in an application of an intermediate node,

• the system for enabling a network operator to prevent service operation failure when there is an interaction between said end-to-end TCAP based supplementary service and said interfering telecommunication service, the system comprising:
• a) means for establishing a relay link between an incoming TC-dialogue and an outgoing TC-dialogue at the intermediate node for providing a chain of end-to-end TC-dialogues between the originating local exchange node and the destination local exchange node, while using a transparent relay functionality being independent of utilizing TCAP based supplementary service ASEs at intermediate nodes,
• b) means for differentiating the handling and continuity of the chained dialogues based on the effect of the interaction caused by said interfering telecommunication service,
• wherein said transparent relay functionality communicates with the TCAP based supplementary service ASE and said effect of the interaction between said incoming TC-dialogue, said interfering telecommunication service and said outgoing TC-dialogue, and
• means for encapsulating the service ASE in a new TC-relay ASE that is realized either as new operations within Intelligent Network Application Part INAP or as another TCAP based supplementary service having an own set of ASE data elements.

A system in a telecommunication network, in which a subscriber connected to an originating local exchange node has requested activation of a supplementary service located in an application of said originating node, wherein said supplementary service uses a Transaction Capability Application Part TCAP and a corresponding Abstract Service Element ASE for establishing an end-to-end Transaction Capability TC-dialogue, having a transaction ID, with the corresponding supplementary service in an application of a destination local exchange node to which an addressed remote subscriber is connected, and said TC-dialogue terminates the request on an interfering telecommunication service located in an application of an intermediate node,

• the system for enabling a network operator to prevent service operation failure when there is an interaction between said end-to-end TCAP based supplementary service and said interfering telecommunication service, the system comprising:
• a) means for establishing a relay link between an incoming TC-dialogue and an outgoing TC-dialogue at the intermediate node for providing a chain of end-to-end TC-dialogues between the originating local exchange node and the destination local exchange node, while using a transparent relay functionality being independent of utilizing TCAP based supplementary service ASEs at intermediate nodes,
• b) means for differentiating the handling and continuity of the chained dialogues based on the effect of the interaction caused by said interfering telecommunication service,
• in the intermediate node, in response to reception of an incoming TC-dialogue request related to a TCAP based supplementary service having a dedicated SubSystem Number SSN, and based on an analysis of the requested TCAP based supplementary service identity, as identified by a specific supplementary service Object Identifier OID, and calling and called party address information sent together with the request,
• i) means for triggering the transparent relay functionality in case either the OID is not recognized by the intermediate node, or the called party address information does not address a subscriber connected to the intermediate node,
• ii) means for initiating a TC-relay link procedure comprising preservation of the received TC-dialogue ID and sending of a query for number translation by communicating the called and calling party address information and the supplementary service ASE of the received TC-dialogue to the interfering telecommunication service,
• iii) means for analysing the received query and determining by the interfering telecommunication service the new called party address information and the effect of the interaction with the TCAP based supplementary service as identified by the received OID,
• iv) means for accomplishing the TC-relay link procedure comprising establishing an outgoing TC-dialogue based on the received called party address information and the supplementary service ASE from the interfering telecommunication service, and building an association between the incoming and the outgoing TC-dialogues ID based on a received indication for handling of the TC-dialogue continuity.

A system in a telecommunication network, in which a subscriber connected to an originating local exchange node has requested activation of a supplementary service located in an application of said originating node, wherein said supplementary service uses a Transaction Capability Application Part TCAP and a corresponding Abstract Service Element ASE for establishing an end-to-end Transaction Capability TC-dialogue, having a transaction ID, with the corresponding supplementary service in an application of a destination local exchange node to which an addressed remote subscriber is connected, and said TC-dialogue terminates the request on an interfering telecommunication service located in an application of an intermediate node,

• the system for enabling a network operator to prevent service operation failure when there is an interaction between said end-to-end TCAP based supplementary service and said interfering telecommunication service, the system comprising:
• a) means for establishing a relay link between an incoming TC-dialogue and an outgoing TC-dialogue at the intermediate node for providing a chain of end-to-end TC-dialogues between the originating local exchange node and the destination local exchange node, while using a transparent relay functionality being independent of utilizing TCAP based supplementary service ASEs at intermediate nodes,
• b) means for differentiating the handling and continuity of the chained dialogues based on the effect of the interaction caused by said interfering telecommunication service, and
• means for providing, for handling and continuity of the chained dialogues, an indication by the interfering telecommunication service on whether the TC-link relay functionality should use a Single Association Control Function SACF to establish a simple and single association between the incoming and the outgoing TC-dialogues, or a Multiple Association Control Function MACF to establish a multiple association using two SACFs between the incoming and the outgoing TC-dialogues.