| 摘要 |
The invention relates to computer software product (11) adapted for execution on a wireless device (10) in communication with a carrier network (15). The software product includes instructions for establishing a data channel (24) with an Internet-based server (16) independently of the carrier network and for maintaining the channel in an open state. It is the channel itself that indicates presence of the wireless device in a presence-aware application, such as an email client, instant messaging client or business application. The invention also relates to a computer software product adapted for execution on the server (16) that manages the data channels (24) and facilitates communication between the presence aware application (17) and wireless device (10).
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