4. Volte call flow - SIP Call Flow - IMS Call procedure

http://telecomtutorial.info VoLTE MO and MT Call Flow :- Covering VoLTE to VoLTE SIP IMS Call flow for Mobile Originating & Mobile Terminating Calls . It Provides extract of 3GPP / GSMA Specs simplified way Originating Call Flow Sequence described in Video :- SIP INVITE message : UE --to-- IMS SIP 100 Trying : IMS --to-- UE SIP 183 Progress SDP : IMS --to-- UE SIP PRACK : UE --to-- IMS SIP 200 OK PRACK : IMS --to-- UE SIP UPDATE SDP : UE --to-- IMS SIP 200 OK UPDATE : IMS --to-- UE SIP 180 Ringing : IMS --to-- UE SIP 200 OK INVITE : IMS --to-- UE SIP ACK : UE --to-- IMS ----------------------------------- Linkedin : www.linkedin.com/in/vikas-shokeen Twitter : https://twitter.com/Vikas_Shokeen Facebook : https://www.facebook.com/TelecomTutorial ----------------------------------- Music by Joakim Karud http://youtube.com/joakimkarud No Copyright Motion Graphics Motion Graphics provided by http://www.youtubestock.com , YouTube Channel: https://goo.gl/aayJRf