Method for displaying special alerting icon

A method for displaying an indication, comprising:

• receiving an incoming network message from an originating mobile service switching center (MSC);
• checking whether the incoming network message is processed over a flagged routing number port;
• if the routing number port is flagged, generating a SETUP message to include an instruction command to display an icon;
• transmitting the SETUP message to a terminating wireless communications device;
• and
• displaying the icon on the terminating wireless communications device when receiving the instruction command.

The method for displaying an indication, comprising:

• receiving a request for a routing number that is used for transmitting a network message from a calling party to a called party;
• determining whether the request is sent from an equipment that belongs to a specific wireless communications service provider;
• determining whether the calling party is a subscriber of the specific wireless communications service provider by launching a query to an external database to obtain carrier information of the calling party if the equipment belongs to the specific wireless communications service provider;
• flagging a routing number port associated with the routing number and returning the routing number if the calling party is a subscriber of the specific wireless communications service provider;
• returning the routing number without flagging the routing number port if the originating equipment does not belong to the specific wireless communications service provider;
• receiving an incoming network message that is to be routed through the flagged routing number port;
• generating a SETUP message to include an instruction command to display an icon;
• transmitting the SETUP message to a terminating wireless communications device;
• and
• displaying the icon on the terminating wireless communications device corresponding to the instruction command included in the SETUP message.

A method for displaying an indication on a wireless communications device operating in an IP multimedia system (IMS), comprising:

• receiving an invitation message from a calling party to a called party to request a service, wherein the invitation message includes originating carrier information of the calling party;
• determining from the originating carrier information of the calling party whether the calling party subscribes to the same carrier as the called party;
• if the calling party and the called party subscribe to the same carrier, inserting predetermined data into a Call-info header in an INVITE message;
• transmitting the INVITE message to the called party;
• and
• in response to the predetermined data, displaying an indication/icon on the wireless communications device of the called party.