We have VOIP wan and in one office experiencing warning messages on the phones of low ban width. What tools are available to monitor what is going on to try to identify if data transmissions are causing some of the trouble? We are told that voice takes presidence over data, but now the finger is being pointed to data traffic as being the problem.

Hopefully,someone can share what tools are out there to monitor and identify what is going on (at a reasonalble price)

Thanks in advance