Web– if the I-CSCF has received a valid SIP URI from the HSS because the S-CSCF is already assigned to other UEs sharing the same public user identity, it will request the list of capabilities from the HSS and, on receiving these capabilities, the I-CSCF shall select a new S-CSCF as described in subclause 5.3.1.2, based on the capabilities ... Webims中，s-cscf到as的业务触发是基于ifc进行的。 ims,cscf,as,业务,触发,基于,ifc,进行 ... sip可用来创建，修改和终结多个参与者参加的多媒体会议。 ...

IMS中，S-CSCF到AS的业务触发是基于iFC进行的。-找考题网

WebI-CSCF ↔ S-CSCF: Provides security between SIP nodes within a network. Registration process. Before a user can get access to IP Multimedia services, it must register at least one IMPU (IP Multimedia Public Identity), such as a telephone number. Then the IMS network must authenticate the IMPI (IP Multimedia Private Identity) at application. WebP-CSCF in the operator’s network based on survivability, number of users, expected traffic, and network topology. The P-CSCF can be also referred to as the SIP server. To … grammarly book pdf

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WebSIP Registration. After UE finishes radio procedures and it establishes radio bearers UE can start SIP registration towards the IMS for VoLTE call. Here is a typical IMS SIP registration call flow. The IMS client attempts to … Weban external SIP network element (such as an S-CSCF) SIP MESSAGE request. Diameter. the Sentinel mediation layer (related to events from an external OCS) Extension. external … WebProxy CSCF: P-CSCF acts as the initial point of contact from any SIP User Agent. It handles all requests from the UE and is, from the UE’s point of view, the “SIP proxy” to the entire subsystem. Serving CSCF: S-CSCF has knowledge about the user and what applications are available to the user. It acts as a decision point. china replacement companies california