Looking to change wave file but cannot find it.

[Naelr]

I am using 3CX as an announcement system along side of a client's phone system. I am using Grandstream (indoor) and Algo horns (outdoor) to facilitate the announcements. I have several pre recorded announcements that go off several times a day using a call flow and was wondering if there was a way to disable or change the beep that happens before each announcement. The client has expressed the dislike of the beep. I have logged into the 3CX box and found many many wave files but I cannot figure out which is the actual beep. Can I get some guidance towards the correct file please?

 

[Alphabetic]

Do a search for beep.wav

 

[Naelr]

I did find the beep.wav file but I thought that was the wav used to indicate someone to leave a message after the tone? Is it used for other things as well?