Asterisk simple

sip.conf

• vi /etc/asterisk/sip.conf

[general]
enable=yes
refreshinterval=60
bindport=5060
bindaddr=0.0.0.0 
qualify = yes
disallow=all
allow=gsm
allow=ulaw
allow=alaw 
srvlookup = yes
canreinvite= yes
jbenable=yes
transfer=yes
defaultexpiry=3600
allowtransfer=yes
alwaysauthreject=yes
allowguest=no
register => 0666677777:geheimes-password-beim-sip-provider:0666677777@sip.provider.de/0666677777 

[provider]
type=peer
insecure=port,invite
username=0666677777
fromuser=0666677777
fromdomain=sip.provider.de
secret=geheimes-password-beim-sip-provider
host=sip.provider.de
qualify=yes

[user-1]
type=friend
secret=sau-geheim-des-users
disable = all
qualify=yes
host=dynamic
contactdeny=0.0.0.0/0.0.0.0
contactpermit=192.168.178.0/24

extensions.conf

• vi /etc/asterisk/extensions.conf

[general]
 [globals]
[default]
exten => 0666677777,1,Dial(SIP/user-1,60,rtT)