Purpose
SIMPLE applies SIP to the problems of:
- registering for presence information and receiving notifications when such events occur, for example when a user logs in or comes back from lunch;
- sending short messages, analogous to SMS or two-way paging;
- managing a session of real-time messages between two or more participants.
Implementations of the SIMPLE based protocols can be found in SIP Softphones and also in SIP Hardphones.
Read more about this topic: SIMPLE
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