實作案例

SIP 相關

tcpdump

timeout 6m tcpdump -i eth0 host <sip-trunk-ip> -n -s 0 -vvvv  -w carrier.pcap

Wireshark

更多與 sip 有關的 filter 語法：https://www.wireshark.org/docs/dfref/s/sip.html  

只顯示 REGISTER 行，Filter: sip.CSeq.method == REGISTER