How I could disable debug information

I log in to my asterisk consule , my asterisk received a lot of this kind of information like this.

NOTICE[758]: chan_sip.c:21549 handle_request_register: Registration from ‘Opticaller sip:27**@213.132.***.***’ failed for ‘213.103.205.**’ - No matching peer found

I would like to get rid of this debug information, if someone has idea that how I could disable this kind of debug information

Thanks

Information for adjusting the logging verbosity in Asterisk can be found on the Asterisk project wiki.

Link here: wiki.asterisk.org/wiki/display/ … bug+Levels

Thanks!