A secondary lesson in SIP
Tags :SIP
So to make this simple and grab a great image
from the Lotus whitepaper I tracked down from Mar 04, a brief part on how
SIP works in visual description. Alice makes the subscription to
know about Bob's status (no, not like a dating service). When the
status changes for Bob in any way, the server notifies Alice. Quite
simple right?
SIP uses the Uniform Resource Identifier
(URI) as an assignable tag for the reason of subscription and notification.
In this case the URI would be Bob's email address. You can
think of your phone as a URI since it identifies only your house or cell
phone.
Once cool thing about SIP is that any user
can register numerous devices to be assigned and then (with technology)
each device can be tried at once or in order. The phone company does
this now when you call a main phone number which then rings your cell and
then a pager if necessary.
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On Thursday, June 30th, 2005 by Chris Miller
