Patent ID: 7933213

Claim:
A method for monitoring a plurality of time division multiplexing circuits connected to an internet protocol/multi-protocol label switching based core communication network, comprising: cataloguing the plurality of time division multiplexing circuits that are connected between the internet protocol/multi-protocol label switching based core communication network and a public switched telephone network; and monitoring the plurality of time division multiplexing circuits by periodically generating a test call on one of the plurality of time division multiplexing circuits, wherein the test call is triggered by a time division multiplexing circuit database server by sending a request to a border element implemented as a media gateway that performs signaling, media control, security and call admission control functions of the internet protocol/multi-protocol label switching based core communication network, wherein the border element generates the test call over the chosen one of the time division multiplexing circuits randomly within a time division multiplexing line connected to the public switched telephone network.