The sngrep is a tool for displaying SIP calls message flows from terminal and supports live capture to display realtime SIP packets and can also be used as PCAP viewer.
[mythcat@fedora ~]# dnf copr enable irontec/sngrep
[mythcat@fedora ~]# dnf install sngrep
[mythcat@fedora ~]# exit
[mythcat@fedora ~]$ sudo sngrep -d ens1 -O save.pcap port 8080 and udp
The result is this: