SIP Presence - Signed In

SIP Presence - Signed In^†

^† From the lecture notes “SIP Tutorial: Introduction to SIP” by Henry Sinnreich and Alan Johnston, formerly at http://smuhandouts.com/8393/SIPTutorial.pdf

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Transcript

[slide156] The sign in, we saw a little bit of this before. A initially got a notification that B wasn't signed in.