Method for transmitting short message to called subscribers

A method for transmitting a short message to a plurality of subscribers in a mobile communication system, comprising the steps of:

• transmitting from a mobile communication terminal a short message registration signal including a short message service center number, a group identifier and at least one subscriber number, the group identifier being a separately defined field from device Identifiers (IDs) of the mobile communication terminal and the plurality of the subscribers;
• detecting, by a short message service center, said group identifier from said short message registration signal;
• and
• registering said transmitted subscriber numbers in said short message service center in accordance with said detected group identifier;
• wherein said step of transmitting said short message registration signal comprises the steps of:
• displaying a plurality of menus;
• selecting a short message service menu from said plurality of displayed menus;
• displaying a first set of sub-menus associated with said short message service menu, said first set of sub-menus including a short message transmission mode and a short message group registration mode;
• instructing a calling subscriber to input a short message service center number in response to selecting said short message group registration mode sub-menu;
• inputting said group identifier and said subscriber numbers;
• and
• transmitting said short message signal including said short message service center number, said group identifier and said subscriber numbers;
• and
• wherein said step of inputting said subscriber umbers includes the steps of:
• inputting a desired subscriber number;
• determining if a subscriber number end key is actuated;
• and
• instructing a caller to input another desired subscriber number if said subscriber number end key is not actuated.