A method of interacting with a call event for a mobile user equipment comprising an application manager connected to an application server , said method comprising the acts of: - monitoring the occurrence of a call event, - retrieving call interaction conditions associated with said call event from a mapping table, said mapping table defining per type of call event call interaction conditions necessary for triggering at least one service available to the mobile user equipment, - triggering the at least one service provided that the retrieved call interaction conditions are met, wherein the at least one service comprises at least one application to be triggered, said at least one application being triggered simultaneously when the at least one service comprises several applications, and wherein the method further comprises the acts of: checking, by the application server, for a given application among said at least one application, if said given application is installed on the application manager; if the checked application is not installed on the application manager, sending an up-to-date version of the given application to the application manager from the application server; if the checked application is installed on the application manager, checking if the installed application is up-to-date ; if the installed application is not up-to-date, sending an upgrade package of the given application to the application manager from the application server. - monitoring the occurrence of a call event, - retrieving call interaction conditions associated with said call event from a mapping table, said mapping table defining per type of call event call interaction conditions necessary for triggering at least one service available to the mobile user equipment, - triggering the at least one service provided that the retrieved call interaction conditions are met, wherein the at least one service comprises at least one application to be triggered, said at least one application being triggered simultaneously when the at least one service comprises several applications, and wherein the method further comprises the acts of: checking, by the application server, for a given application among said at least one application, if said given application is installed on the application manager; if the checked application is not installed on the application manager, sending an up-to-date version of the given application to the application manager from the application server; if the checked application is installed on the application manager, checking if the installed application is up-to-date ; if the installed application is not up-to-date, sending an upgrade package of the given application to the application manager from the application server. checking, by the application server, for a given application among said at least one application, if said given application is installed on the application manager; if the checked application is not installed on the application manager, sending an up-to-date version of the given application to the application manager from the application server; if the checked application is installed on the application manager, checking if the installed application is up-to-date ; if the installed application is not up-to-date, sending an upgrade package of the given application to the application manager from the application server. <EOS>