Understanding Presence1
Presence is an indication of the availability of an individual at a point in time and their readiness to2
communicate across a set of services such as telephony and instant messaging. The person's3
status or availability is represented using states like Available, Busy, and Away. To enable this4
feature, the Avaya Scopia
®
XT Series endpoint registers to an Extensible Messaging and5
Presence Protocol (XMPP) server to publish its own presence status and to view the presence6
status of other contacts, such as other XT Series endpoints or devices registered to the Presence7
server.8
For example, a user Alice can publish her own status when she registers to the Presence server.9
The Presence server is notified every time her status changes. A user Bob can subscribe as a10
watcher to the Alice contact and see her status. When Bob subscribes as a watcher to the Alice11
contact, Alice may be able to approve or reject Bob's request to be a watcher. Alternatively,12
depending on the configuration of the Presence server, Bob's subscription may be granted13
automatically. Alice can also ignore Bob's request or revoke his access. Bob can unsubscribe from14
being a watcher at any time.15
16
Figure 38: Alice registers to a Presence server17
18
Figure 39: Bob subscribes as a watcher to the Alice contact19
20
Figure 40: Alice sees Bob’s request21
Starting a New Call
December 2017 Avaya Scopia
®
XT Series User Guide 56
Avaya - Proprietary. Use pursuant to the terms of your signed agreement or Avaya policy.
DRAFT—December 15, 2017—1:33 PM (UTC)
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