Here is my sip.conf
[general]
port=5060
bindaddr=0.0.0.0
erternip=xxx.dyndns.org
localnet=192.168.0.0/255.255.255.0
srvlookup=yes
context=sipgate-in
disallow=all
allow=g729
canreinvite=no
insecure=very
nat=no
dtmfmode=info
language=de
register => [SIPID]:[PASSWORD]@sipgate.de/2762720
[2762720]
context=mike
type=friend
secret=[PASSWORD]
auth=md5
host=dynamic
qualify=3000
dtmfmode=rfc2833
callerid="Mike Gahn" <2762720>
mailbox=2762720
[sipgate-mike]
type=peer
username=[SIPID]
secret=[PASSWORD]
host=sipgate.de
fromuser=[SIPID]
fromdomain=sipgate.de
qualify=yes
and here my extensions.conf
[globals]
MIKE => SIP/2762720
[capi-in]
exten => 2762720,1,SetLanguage(de)
exten => 2762720,2,Dial(${MIKE},20)
exten => 2762720,3,VoiceMail,u2762720
exten => 2702720,4,Congestion
exten => 2762720,102,VoiceMail,b2762720
[sipgate-in]
include => capi-in
[mike]
include => mike-capi-out
include => mike-voicemail
include => mike-sipgate-out
[mike-voicemail]
exten => 1000,1,Ringing
exten => 1000,2,Wait(2)
exten => 1000,3,VoicemailMain,s2762720
[mike-capi-out]
exten => _9.,1,SetLanguage(de)
exten => _9.,2,Ringing
exten => _9.,3,Dial(CAPI/2762720:${EXTEN:1})
exten => _9.,4,Congestion
exten => _9.,5,Wait(5)
exten => _9.,6,Hangup
[mike-sipgate-out]
exten => _8.,1,Dial(SIP/${EXTEN:1}@sipgate-mike,60,tT)
exten => _8.,2,Congestion
exten => _8.,3,Busy
exten => _8.,4,Hangup