What type of configuration failure would occur if the slave's extension does not match the master's?

A configuration failure where the slave's extension does not match the master's would lead to a connection failure. In a properly configured system, each extension must correspond with a unique identifier to function correctly and facilitate communication. If there is a mismatch in the extensions, the system cannot establish a proper link between the master and the slave, resulting in failed attempts to connect calls, log in users, or communicate effectively.

This type of failure impacts the ability of users to reach each other or utilize the features of the system since the call routing logic relies on correctly matching extension numbers. When extensions do not align, it disrupts the expected behavior of the communication system, leading to these connection errors.

The other options describe issues that stem from other types of problems unrelated to extension mismatches. Audio distortion typically arises from bandwidth issues or codec mismatches rather than extension discrepancies. Call latency involves delays in communication, which can be attributed to network performance issues rather than configuration errors between master and slave extensions. Member extension unavailability would imply that an extension is completely offline or not properly registered, which is not specifically related to a mismatch with the master extension.