Patent ID: 7058162

Claim:
An apparatus for testing an asymmetric digital subscriber line, the apparatus comprising a portable unitary assembly, wherein the portable unitary assembly is arranged in a case and comprises a low-frequency signal generator configured to generate a frequency that is compatible with a rated frequency of the telephone line, which generator is adapted to be coupled to an input terminal block of an access multiplexer of a telephone exchange and which generator is adapted to inject into the latter a signal simulating the presence of a telephone line; an amplifier linked to a speaker and intended to be connected to an output terminal block of the access multiplexer and intended to retrieve and amplify the signal transmitted by the generator to an audible level; and a modem intended to be connected to the output terminal block to test a modem of the access multiplexer by checking synchronization between the modem of the apparatus and the modem of the access multiplexer, wherein the amplifier is linked to a line socket unit controlling the actuation of the low-frequency signal generator.