Automatic delivery of messages

A method for automatically delivering messages to an active recipient number, the method comprising the steps of:

• sending a message from a sending device to a known recipient number;
• receiving the message on a sender SMSC associated with the sending device;
• forwarding the message and the known recipient number from the sender SMSC to a serving HLR, wherein the serving HLR performs the following steps:
• receiving the known recipient number from the sender SMSC;
• determining that the known recipient number is associated with a recipient having a plurality of recipient numbers;
• and
• forwarding a first request;
• receiving the first request from the serving HLR on a recipient SMSC, wherein the recipient SMSC performs the following steps:
• sending a response to the sender SMSC indicating the message should be delivered to the recipient SMSC;
• after receiving the message from the sender SMSC, sending a delivery confirmation to the sender SMSC indicating the message has been delivered to the recipient;
• forwarding a second request;
• and
• forwarding a third request;
• receiving the second request from the recipient SMSC on an active subscriber identity system;
• sending a response from the active subscriber identity system to the recipient SMSC identifying an active recipient number from the plurality of recipient numbers;
• and
• receiving the third request from the recipient SMSC on a local HLR, wherein the local HLR performs the following steps:
• sending a response to the recipient SMSC, wherein the recipient SMSC forwards the message to the local HLR;
• and
• delivering the message to the active recipient number.