Tech-invite3GPPspecsGlossariesIETFRFCsGroupsSIPABNFs   Ti+   SearchTech-invite World Map Symbol

IMS Registration signalling flow —
User not registered




Here   Up   Prev   Next


R1-3d.  SIP REGISTER request, with credentials: between I-CSCF1 and HSS  (16 of 22)

I-CSCF1 requests information related to the Subscriber registration status by sending the private user identity, public user identity and visited domain name to the HSS. The HSS returns the S-CSCF name which was previously selected in step 1d.