METHOD AND APPARATUS FOR DYNAMIC TESTING OF ECHO SUPPRESSORS IN TELEPHONE TRUNK SYSTEMS

摘要

Functional characteristics of echo suppressors in a telephone truck system are dynamically evaluated by propagating selected test signals, in a predetermined format tailored to the characteristic being evaluated, through the trunk system and selectively through echo suppressors in the system. An auxiliary trunk is utilized in conjunction with the trunk-under-test to facilitate transmission and reception of the test signals. Test signals are supplied from and evaluated by a master test unit, which is preprogrammed in accordance with the test being performed and the type echo suppressor being evaluated.