Hi,
How I can observe transmision of packets between server SIP (Asterisk) and Softphone on the same PC (Ubuntu)? Wireshark… netstat … or others, how use?
Grzegorz
Use Asterisk’s built in sip or pjsip logging, or tcpdump or wireshark.
Note this will log traffic between Asterisk client and the phone (i.e. outgoing calls, and re-INVITEs) as well as between Asterisk server and the phone.
Using the built in logging is best if you intend to ask a question here. For more details google “asterisk wiki debugging”.