By collecting and disseminating presence information (status of end user devices, availability
of the individual, and location), the most effective and appropriate means of communicating
to a person or a device can be identified. Network applications (for example, find me/follow
me service) can use presence information to efficiently and appropriately route or block
incoming communication requests (Roach, 2002).
SLA Mon tor ng of Presence-Enabled Serv ces 0
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Presence-Enabled.Services.Architecture
Presence service architecture (Day, Rosenberg, & Sugano, 2000) includes a wide variety of
end user communication clients, integration of multiple real-time communication services
into an integrated communications suite, and new end user services that can be developed
for spanning and combining wireline telephony, wireless telephony, messaging services,
and so forth. Types of information and protocol elements include presence information
from a wide variety of end user clients and network elements that can be accessed through
a central presence server, plus standard presence protocols and standard event packages that
allows presence-enabled services to be developed separately from the end user clients and
presence server vendors.
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