name: IMPU
full_form: IP Multimedia Public User Identity
context: UE shall not deregister from IMS between steps 1 and 2. In step 4 (referring to the messages defined in annex C.2) all the requests sent by the UE contain the new updated home domain name and/or IMS identities which the UE has read from ISIM after step 1. More specifically the UE shall use the new values read from ISIM for constructing the following headers: Request-URI: HomeDomainName, IMPU From: IMPU To: IMPU Authorization: PrivateUserIdentity, HomeDomainName
description: The IP Multimedia Public User Identity (IMPU) is a parameter used in the construction of specific headers for requests sent by the UE to the IMS network. It represents an identifier for the user's public identity within the IMS system.
explanation: Given its use in constructing headers like Request-URI, From, To, and Authorization, IMPU functions as an identifier for a user's public identity within IMS communications, making it a parameter.
section_title: 8.15.5Test requirements
biotag_Context: B-Device,O,O,O,O,B-Network,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Device,O,O,O,O,O,O,O,O,B-Network,O,O,O,B-Device,O,O,O,B-Network Function,O,O,O,O,O,O,B-Device,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,B-Parameter,O,B-Parameter,O,B-Parameter,O,O,O
biotag_Description: O,B-Parameter,I-Parameter,I-Parameter,I-Parameter,I-Parameter,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Device,O,O,B-Network,O,O,O,O,O,O,O,O,O,O,O,O,B-Network,O