I have obtained an ICP 3300 system (sw version 10.xx.xx). It was from a networked environment. The system is setup to make calls over T1 PRI. We can make incoming and outgoing calls but get a reorder or fast busy tones when connected. The call stays up and are able to even do call transfer. After the call is transferred, the reorder/fast busy tone disappears.
Can anyone tell me as to where this tone is coming from and how to disable it?
Appreciate all the help.
Thanks.