27/08/201912 © Nokia 2019Drawn by N. RaoN9HR: IMS session identification via deep packet inspectionV-UPF BBIFF-U H-UPFHPLMNVPLMNIMS-AGWVo5GS(target)P-CSCFLMISFMDF3MDF2LEMFIP Address 2: 12.1.1.1IP Address 1: 5.100.1.10 IP Address 3: 5. 5.100.1.1 IP Address 4: 5.175.200.1IP Address 5: 5.175.10.1UDP Port: 24000, 24001UDP Port: 26000, 26001UDP Port: 5060UDP Port: 32000, 32001UDP Port:36000, 36001UDP Port: 5060UDP Port: 2152UDP Port: 2152UDP Port: 5060UDP Port: 5060UDP Port: 2152UDP Port: 21525.100.1.10/24000,240015.175.200.1/32000,32001IMS Session 1IMS Session 2Media of IMSSession 1Media of IMSSession 2LI_X2LI_X3LI_HI2 (IRI)LI_HI3 (CC) CorrelatedCorrelatedLI_XiaIMS SignaliNg QoS FlowIMS media QoS Flow5.100.1.10/ 5.175.200.1RTPUDPIPRTPUDPIP24000/3200026000/360005.100.1.10/ 5.175.200.12152/215212.1.1.1/5.5.100.1.15.100.1.10/24000,240015.175.200.1/32000,32001UDPIP5.100.1.10/ 5.175.10.15.100.1.10/26000,260015.175.200.1/36000,36001SDP SDPSIP SIP5060/5060IPUDPGTP-U5GS PDU SessionQFI = IMS Media QFI = IMS Signaling• To associate a SIPmessage with a sessionleg, the SIP call Id and theSDP within the SIP willhave to be used.• To associate the mediawith a IMS session leg, theUDP port numbers usedfor the RTP will have to beused.