The problem with in-band signaling is that it eats up precious bandwidth on shared trunks.

Question

Quizplus · Accepted Answer

In-band signaling uses the same channel or path for both signaling (control information) and the transmitted data or voice. This means that part of the bandwidth that could be used for data or voice transmission is instead used for signaling purposes, reducing the overall available bandwidth for the primary communication.

The Problem with In-Band Signaling Is That It Eats Up