TB30s SIP Administrator Guide v1.3 Page 159 of 259
Services Supervision Feature.
This feature describes how TB30 can request for a user profile and receive
notifications related to a set of services implemented by the network like:
- DND activation status
- Call Forward activation status
- etc….
A few comments first. SIP User Agents require configuration data to
function properly. A configuration data set, specific to an entity, is termed a
profile. Process to get this profile could be automatic with no user
intervention. In our scope, Service variables supervision is performed using
the User Profile.
So, to support this new feature, TB30 has implemented the “ua-profile”
Event Package as described in "draft-ietf-sipping-config-framework-xx.txt".
This framework provides a standard means of providing dynamic
configuration and also addresses change notifications when profiles change.
The content or format of the profile will be defined below.
There are 3 stages for the profile delivery process: enrollment, content
retrieval and change notification. The behaviour of the phone in each state is
as follows:
A) Enrollment: TB30 requests and receives its profile data.
After a successful registration process, TB30 will generate an initial
SUBSCRIBE request for the event package “ua-profile” to the SIP server in
order to be notified for the state of subscribed services for this account.
The initial SUBSCRIBE Request-URI, To and From headers are set to the
account, and includes an Event and Accept headers as follows:
SUBSCRIBE sip:2205@10.0.0.5:5060;user=phone SIP/2.0
Via: SIP/2.0/UDP 10.0.0.55:5060;branch=z9hG4bK4696915359658109209-910168
From: <sip:2205@10.0.0.5:5060>;tag=c0a80101-de357
To: <sip:2205@10.0.0.5:5060>
Call-ID: e32b4-c0a80101-d-3@10.0.0.55
CSeq: 1 SUBSCRIBE
Max-Forwards: 70
Event: ua-profile;profile-type=user
Accept: application/service-user-profile+xml
Expires: 3600
Contact: <sip:2205@10.0.0.55:5060;user=phone>
Allow-Events: refer,dialog,message-summary,check-sync,talk,hold
User-Agent: THOMSON TB30 hw0 fw1.62 00-0E-50-4E-88-E0
Content-Length: 0
Then, SIP Server receives successfully this Subscribe and identifies the
requested profile data. It prepares a SIP NOTIFY message to TB30 with the
ua profile data inserted inside the body, and sends it immediately to
complete the enrollment.
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