User's Manual

Purpose and usage of SIP subscriptions
SIP Subscription and Notification requests update connected SIP endpoints on state changes
related to services that the endpoints consume. For example, when a new voice message
arrives in a mailbox, Session Manager sends a SIP notification request to notify the related
endpoints about the arrival of a new voice mail message.
For an endpoint to receive SIP notifications, it first needs to subscribe to the relevant
subscription package. Each subscription package is related to a specific service that the
network delivers to the endpoint. The SIP endpoints automatically establish all required
subscriptions upon logging into the network.
When a subscription to an event package (service) is established, it is assigned with a
subscription expiration timer. The endpoint continues to receive notifications as long as the
expiration timer does not expire. The endpoints automatically refresh any subscriptions before
their expiration timer expires. A lower subscription expiration timer generates more SIP traffic
related to subscription refresh events. Refreshing a subscription updates the state of the
subscription.
Session Manager allows administration of the subscription expiration timer for each type of
event package.
Device Settings Groups field descriptions
Device Settings Groups page enables the user to create and manage device configuration
groups.
Button
Description
Default Group Opens the Device Settings Group page that
allows you to modify the Default Group.
Terminal Groups
Name
Description
Name Shows the name of the Terminal Device
Settings Group.
Terminal Group Number Specifies a numeric ID for this group. Using
a group ID you can identify different phones
on your network for ease of administration.
With the exception of the field Group ID,
Group parameters are the same as those for
common phone parameters. Numeric IDs
must be between 0 and 999.
Device and Location Configuration
Administering Avaya Aura
®
Session Manager November 2010 395