A browser-only ladder for an INVITE, REGISTER, or BYE. Cypher Monkey, a lifelong student and AI builder, made this as a study control. It does not open a socket and it does not call Webex, CUBE, or any carrier.
Simulation. The message below is built on this page from the fields you type. It is not a packet capture and it is not a vendor response.
Study drawing of a call leg. Click a node to read the label. Nothing is sent.