Jitsi softphone not allowing end calls


Sorry about my English, I’ll try to do my best.

I’m using Jitsi softphone and I have the following issue:
I have a SIP account with my home phone number and I can receive phone calls but when I receive a call and try to hang up phone, my home phone terminal goes on sounding as the phone call had not finished.
What can I do? I think something related to busy information is the problem…it seems that Jitsi is considering if I close from my pc the other terminal will answer…

Thanks in advance, any help will be great