I don’t have Asterisk or SIP installed. I was just trying to help you with basic questions, as well as questions which could have been avoided if you read the thread you linked to, or the instructions I linked to.
I don’t want to sound rude or anything, but all your questions have already been asked by others multiple times, and solutions have already been provided. If you can’t copy and paste stuff from a written guide, a video guide would have made things worse for you.
Please read the links above carefully (yes, I know it’s a long thread). If you’re still stuck after reading and following instructions, I suggest you post in the dedicated thread. The people there are way more familiar with all this and would be able to point you in the right direction.