I'm trying to capture wired VoIP calls between 2 TextNow Windows app installed on different workstations on the same LAN, by running Wireshark 2.4.2 on one of these workstations. However, after the call is captured, nothing shows up under Telephony - VoIP Calls, or any other Telephony Wireshark menu option. Why is that, and how to capture these calls? Captured traffic during such call is presented by Wireshark as primarily UDP and STUN packets.