ITU-T Recommendations

This Recommendation defines the application service element used by the management functions MRVT, SRVT and CVT defined in Recommendation Q.753. The ASE defines the management information used by these functions in messages across the SS No. 7 network.The ASE interfaces with Transaction Capabilities (TCs) to provide the services used by the OMASE-User (defined in Recommendation Q.753), to allow inter-nodal SS No. 7 communication by MRVT, SRVT or CVT.The main revisions to the 1993 version of this Recommendation are:a) revision of the compatibility rules to allow transparent transport of unrecognized parameters;b) definition of a new MRVT and SRVT message parameter to specify what information is required in any respective MRVR or SRVR message;c) definition of a new MRVR and SRVR message to be used if information is required beyond that specified for the 1993 MRVR and SRVR messages;d) definition of new MRVT and MRVR message parameters to indicate the route priorities;e) definition of new MRVA, MRVR, SRVA and SRVR parameters to allow parameters unrecognized in the MRVT or SRVT messages to be returned;f) definition of a new MRVT parameter requesting nodes to check if they have a route to the test initiator through the node from which they received the MRVT message (this allows checking for symmetrical routes).