Call Defense System by SecureLogix Corporation is an enterprise voice network security platform designed to protect voice networks, contact centers, and emergency services from various threats. It secures against Telephony Denial of Service (TDoS) attacks, toll fraud, call pumping, robocalls, harassing phone calls, and voice spam. The system integrates with existing telecom equipment, including Session Border Controllers (SBCs), gateways, and IP-PBXs, to manage and mitigate voice security threats that could potentially disrupt voice network operations. It helps prevent spam and malicious calls from disrupting operations, ensuring uninterrupted access to emergency services for the public. The system is specifically designed to protect administrative lines integrated into local 9-1-1 call handling equipment. Call Defense System operates in real-time to identify and block harassing callers and call attack signatures, safeguarding calls and network resources against evolving threats.