A customer faces a situation in which the SIP endpoints do not register to Session Manager using Transport Layer Security (TLS). A test reveals that the SIP endpoints do register using the…

A customer faces a situation in which the SIP endpoints do not register to Session Manager using Transport Layer Security (TLS). A test reveals that the SIP endpoints do register using the Transmission Control Protocol (TCP). While investigating the problem, the company decides to temporarily use the TCP. What 8D Discipline covers this decision?