Loopback test chamber is not yet installed on the third floor due to which there is a possibility of line speaker crack bypass.

Loopback chamber is used to do loopback tests on 1st floor. If loopback test chamber is also installed on 3rd floor then the operator will not have any problem with the sound coming from the tab line or it will easily cause failure like Speaker's creak voice and Speaker's low. You will be able to check.

12-03-2025