Incoming calls does not disconnect after hangup


I’ve been working on Asterisk for some time now. All is set up and working good, except one thing. When someone calls and hangs up (doesn’t matter when) my phone keeps ringing and there’s a lot of stuff going on in Active Channels.

Thanks in advance.

ps: I’m not at the office right now, I’ll update the post with my gateway’s manifacturer and model asap.