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1. US20120030298 - SYSTEM AND METHOD OF WIRELESS INSTANT MESSAGING

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Claims

1. A method of operating a server, comprising:
receiving a single message, from a messaging client, addressed to a group;
resolving the group to user identifiers that identify both wireless device clients and Internet clients; and
sending a message to each of the wireless device clients and each of the Internet clients.
2. The method of claim 1 wherein the group is identified by a unique group identifier.
3. The method of claim 2 wherein the resolving comprises consulting a database that relates group identifiers to user identifiers.
4. The method of claim 1 wherein the messaging client is on a wireless device.
5. The method of claim 1 wherein the single message is an instant message, and the server is an instant messaging server.
6. The method of claim 1 wherein at least one of the Internet clients is on a desktop computer.
7. The method of claim 1 wherein the server performing the method maintains presence information for the wireless device clients.
8. The method of claim 7 further comprising determining that a wireless device client, from among said wireless device clients, is in an unknown presence state based on a predetermined time period having passed after receipt of presence information from the wireless device client without having received additional presence information from the wireless device client.
9. The method of claim 8 further comprising refraining from transmitting a message to those of the wireless device clients that are in an unknown state.
10. The method of claim 1 wherein the single message has presence information indicating a presence state of the messaging client.
11. A mobile communication device comprising:
a communication subsystem configured to send, to an instant messaging server, a single instant message addressed to a group that comprises both wireless device clients and Internet clients.
12. The mobile communication device of claim 11 wherein the group is identified by a unique group identifier.
13. The mobile communication device of claim 11 wherein at least one of the Internet clients is on a desktop computer.
14. A wireless instant messaging system comprising:
a wireless messaging server configured to receive a single message addressed to a group, and to resolve the group to client identifiers that identify both wireless device clients and Internet clients, and to send a message to each of the wireless device clients and each of the Internet clients.
15. The system of claim 14 wherein the group is identified by a unique group identifier.
16. The system of claim 15 further comprising a database that relates the group's unique identifier to user identifiers for the wireless device clients and the Internet clients.
17. The system of claim 14 wherein at least one of the Internet clients is on a desktop computer.
18. The system of claim 14 wherein the single message is an instant message, and the server is an instant messaging server.
19. The system of claim 18 wherein the server is configured to determine that a wireless device client, from among said wireless device clients, is in an unknown presence state based on a predetermined time period having passed after receipt of presence information from the wireless device client without having received additional presence information from the wireless device client.
20. The system of claim 19 further comprising refraining from transmitting the message to those of the wireless device clients that are in an unknown state.