2. VoLTE IMS Network Architecture tutorial

http://telecomtutorial.info

I have described VoLTE IMS Architecture in simplified way . Are you also finding 3GPP Specs complicated & Complex for VoLTE IMS .

It covers Role played by individual Networks Elements as mentioned below :-

VoLTE SIP Handset : SIP Support , UAC , UAS , User Agent , SIP-UA
Underlying LTE Network : MME , SGW , PGW , PCRF , HSS , Dedicated Bearer , QCI , Default Bearer
IMS Core : SIP Servers , P-CSCF , I-CSCF , S-CSCF , TAS , MMTEL , BGw , MRF , ATCF , ATGW , IBCF , MGCF , IM-MGW , TrGW
Voice Core or PSTN Network for Break-in or Break-out Calls

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