After modifying the sip.conf, I found the error below.
Parsing ‘/etc/asterisk/sip.conf’: Found
Feb 8 16:23:48 WARNING[3834]: chan_sip.c:12455 reload_config: Empty context specified at line 50 for domain ‘xx.xx.xx.xx’
== Parsing ‘/etc/asterisk/sip_notify.conf’: Found
Could you please explain to me what should be done to correct the problem.
Thanks.
John