C.20 Generic Test Procedure for IMS emergency registration – EPS
34.229-13GPPInternet Protocol (IP) multimedia call control protocol based on Session Initiation Protocol (SIP) and Session Description Protocol (SDP)Part 1: Protocol conformance specificationRelease 16TSUser Equipment (UE) conformance specification
Test procedure:
1) SS waits for the UE to send an initial REGISTER request.
2) The SS responds to the initial REGISTER request with a valid 401 Unauthorized response.
3) The SS waits for the UE to set up a temporary set of security associations and to send another REGISTER request over those security associations.
4) The SS responds to the second REGISTER request with valid 200 OK response, sent over the same temporary set of security associations that the UE used for sending the REGISTER request.
Expected sequence:
|
Step |
Direction |
Message |
Comment |
|
|
UE |
SS |
|||
|
1 |
🡪 |
REGISTER |
The UE sends initial IMS emergency registration |
|
|
2 |
🡨 |
401 Unauthorized |
The SS responds with a valid AKAv1-MD5 authentication challenge and security mechanisms supported by the network. |
|
|
3 |
🡪 |
REGISTER |
The UE completes the security negotiation procedures, sets up a temporary set of SAs and uses those for sending another REGISTER with AKAv1-MD5 credentials. |
|
|
4 |
🡨 |
200 OK |
The SS responds with 200 OK. |
|
Specific Message Contents:
REGISTER (Step 1)
Use the default message “REGISTER” in annex A.1.1 with conditions A1 and A7 .
The contents of From and To headers of the REGISTER request shall be according to condition A7.
REGISTER (Step 3)
Use the default message “REGISTER” in annex A.1.1 with conditions A2 A7, and A31.
The contents of From and To headers of the REGISTER request shall be according to condition A7.
200 OK for REGISTER (Step 4)
Use the default message “200 OK for REGISTER” in annex A.1.3 with conditions A3 and A21.