1. Install fedora 20 x86_64 minimal install
(disabled selinux in /etc/selinux/config and rebooted, not sure if needed but i allways do this)
2. yum install wget tar gcc gcc-c++ ncurses-devel uuid-devel libuuid-devel jansson jansson-devel libxml2-devel sqlite-devel openssl-devel vim-enhanced
3. wget http://downloads.asterisk.org/pub/telephony/asterisk/asterisk-13.1.0.tar.gz
4. tar zxvf asterisk-13.1.0.tar.gz
5. cd asterisk-13.1.0
6. ./configure
7. make
8. make install
9. make samples
10. safe_asterisk
11. Added line 'register => testsip:testpw@10.10.10.10/123' in sip.conf
12. Activated logging as below
13. sip reload
14. sip show registry shows one registration
15. Changed register line to 'register => testsip:testpw@10.10.10.10/124' in sip.conf
16. sip reload
17. sip show registry now shows two registrations
18. Commented out the register line ';register => testsip:testpw@10.10.10.10/124' in sip.conf
19. sip reload
20. sip show registry still shows two registrations
21. Stopped logging and stopped asterisk


logger add channel debug-register-problems notice,warning,error,debug,verbose,dtmf
core set verbose 5
core set debug 5
sip set debug on

core set verbose 0
core set debug 0
sip set debug off

core stop now