Content for TS 23.278 Word version: 18.0.0

1… 4… 4.4… 4.6… 4.6.1.1 4.6.1.2 4.6.1.3 4.6.1.4 4.6.1.5 4.6.1.6 4.7… 4.7.2… 4.7.3… 4.7.4… 4.7.5… 5… 6…

4.7.4 IM-SSF to HSS information flows 4.7.4.1 Any Time Subscription Interrogation request 4.7.4.2 Notify Subscriber Data Change ack
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4.7.4 IM-SSF to HSS information flows p. 146

4.7.4.1 Any Time Subscription Interrogation request p. 146

4.7.4.1.1 Description p. 146

This IF is used by the IM-SSF to request subscription information from the HSS. For example, the IM-SSF shall send this as a result of receiving a third party SIP registration from the S-CSCF (over the ISC interface). The IM-SSF shall also send the MAP ATSI request when a SIP INVITE message on a MT session for an unregistered subscriber is received.

4.7.4.1.2 Information Elements p. 146

Information element name	Status	Description
gsmSCF Address	M	This IE shall indicate the address of the interrogating IM-SSF. The address shall be in international E.164 format.
Requested Info	M	This IE indicates the type of subscriber information being requested. This shall consist of the CAMEL Subscription Information; the CAMEL Subscription Information is described in a Table below.
Subscriber Identity	M	This IE identifies the subscriber for which the information is requested. The identity shall be an IMSI.

CAMEL subscription information contains the following information elements:

Information element name	Status	Description
Additional Requested CAMEL Subscription Info	M	This IE shall contain one of the following: O-IM-CSI/VT-IM-CSI/D-IM-CSI

4.7.4.2 Notify Subscriber Data Change ack p. 146

4.7.4.2.1 Description p. 146

This IF is used to respond to the HSS's notification of the change of subscriber data.

4.7.4.2.2 Information Elements p. 146

This IF contains no information elements.