IMS R6-4b. SIP 200 OK response: between S-CSCF1 and HSS

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SIP ↠ Examples Grammars Presence ⇾ Main Services Transaction Dialog IMS

TS 24.228 – §6.7.2

IMS R6 Registration signalling flow - Network-initiated deregistration event occuring in the HSS - IMS R6-4b. SIP 200 OK response: between S-CSCF1 and HSS

After receiving the 200 (OK) response from P-CSCF1, S-CSCF1 sends Cx-Deregister Resp to the HSS.