Question: SIP with Quectel EC25E/RM520N
ChibangLW opened this issue · 1 comments
Not sure if this is the correct place to ask questions. My goal ist to see SIP Messages and as a bonus RTP streams in Wireshark.
I collected logs (.qmdl and qmdl2 files) with QLog. When using scat with scat -t qc -d log.qmdl -F test.pcap I do see SIP Messages as raw UDP payload in Wireshark (screenshot). From the latest release I would have hoped to see them actually show up as SIP protocol in Wireshark. Is this a missunderstanding or wrong configuration on my end? The same happens if I directly log with scat from the diag serial interface.
Because SIP messages through the separate DIAG log packet are not encapsulated in any transport layer protocol, I added a fictional UDP and IP header and sent the packet through UDP port 47290. Decode UDP port 47290 as IP, then you will see everything.
Q: Why I can't see the real P-CSCF and UE IP address?
A: It is not available along with the DIAG item carrying SIP message. Also I wanted to avoid parsing NAS messages.