A method and system is provided for monitoring the quality of signal
transmissions in a communications network by calculating Quality of
Services (QoS) scores and corresponding Transmission Impairment Test
(TIT) scores, and then monitoring a QoS score to predict a corresponding
TIT score. When the predicted TIT score goes below a minimum value, an
administrator of the communications network will be informed so that the
administrator can determine if services may be needed to restore the
quality of signal transmissions. In an embodiment, the communications
network includes a cable modem termination system (CMTS); a voice band
tester (VBT) coupled to the CMTS; a cable modem tester coupled to the
CMTS; and a Voice over Internet Packet (VoIP) monitoring device coupled
to the CMTS and the voice band tester. The cable modem tester is located
at a location remote from the VBT.