Sip Unauthenticated Invite Processing Long Numeric Call Id

Represents an unauthenticated SIP INVITE request using a non-standard long numeric Call-ID that is accepted for processing by the SIP server, as indicated by a 100 Trying response. This behavior suggests an automated or custom SIP client testing call handling or routing logic rather than a legitimate user agent. The combination of a bot-like Call-ID format and successful INVITE processing indicates elevated reconnaissance or early-stage abuse of call routing, even in the absence of call establishment.