Low Volume For Caller Ring Back Tone

When someone calls, the person hears the ring back tone but the tone isn’t loud anymore. It was loud before some days ago but it isn’t loud enough any more. I am new to using Elastix and have search through the internet but I can’t find anything to help the situation. I am using Elastix version 2.5

I don’t know the Elastix side of things very well. Have you checked to see if the volume on your handsets have changed (or can be increased)?

Are you using SIP?

In a simple SIP dialplan, ringback tone is generated by the calling phone, and no audio for it goes over the wire.