Patent ID: 8149738

Claim:
A method of providing a Push-To (PT) box service to a terminal according to an Open Mobile Alliance (OMA) standard, comprising: receiving from a second terminal, by a PT server that supports the PT box service according to the OMA standard, a SIP PUBLISH message that includes four types of parameters including answer mode information, an incoming session barring flag, an instant personal alert barring flag, and a simultaneous support flag, and PT box setting information indicating one among three conditions of ‘unwillingness’, ‘unconditional’ and ‘conditional’, which instructs how a session invitation should be routed to a PT box that stores data for a later access by the second terminal, the PT box residing in at least one among three locations comprising the first terminal, the second terminal, and the PT server; receiving from a first terminal, by the PT server, a session invitation message directed to the second terminal; determining, by the PT server, a routing of the session invitation message to the PT box for the second terminal based on at least the PT box setting information; and forwarding, by the PT server, a ‘fail’ message to the first terminal if the PT box setting information is set to ‘unwillingness’, wherein the condition of ‘unwillingness’ indicates that the PT box service is available for routing the session invitation message to the PT box but that a user of the second terminal has prohibited the routing of the session invitation message to the PT box, wherein the condition of ‘unconditional’ indicates that the PT box service is available for routing the session invitation message to the PT box and that the user of the second terminal has allowed the routing of the session invitation message to the PT box without condition, wherein the condition of ‘conditional’ indicates that the PT box service is available for routing the session invitation message to the PT box but that the user of the second terminal has allowed the routing of the session invitation message to the PT box only under a certain condition, and wherein the PT Box setting information further includes a PT Box capability setting indicating whether or not the terminal is capable of using the PT box service and that is different than the PT box setting information indicating one among three conditions of ‘unwillingness’, ‘unconditional’ and ‘conditional’.