A method and a network node for supporting a connection between a User Equipment (UE) and a Machine Type Communication-interworking function (MTC-IWF) are discussed. The method according to an embodiment includes receiving, by the network node from the MTC-IWF, a mobile terminated (MT) message including a triggering payload by using a specific reference point; forwarding, by the network node to the UE, the trigger payload, if the trigger payload contains an application identifier which allows the network node and which distinguishes the MT message carrying device triggering information from any other type of MT message; and receiving a response message, which corresponds to the trigger payload, for initiating communication with the server, if the application identifier which allows the UE distinguishes the MT message carrying device triggering information from any other type of MT message.