Sip Call Id Timestamp Local

Represents a SIP Call-ID composed of a millisecond-resolution timestamp and a secondary numeric identifier, followed by a non-qualified local domain (e.g. @local). This Call-ID format is commonly generated by custom or automated SIP tooling rather than standard SIP user agents, and is frequently observed in scanning, enumeration, or fraud-related activity. The use of a placeholder local domain indicates the Call-ID was generated without regard for SIP domain correctness, a pattern typical of bots or lightweight SIP libraries.