Outbound proxy

Hi Guys… neewbie here so be gentle…

Im trying to setup an external SIP provider… aql…

this is what I have setup:

sip.conf

[general]
register=Mynumber:mypassword@sip.aql.com/mynumber

[aql]
type=peer
context=incoming_aql
fromuser=mynumber
username=mynumber
authuser=mynumber
secret=mypassword
host=sip.aql.com
fromdomain=sip.aql.com
dtmfmode=info
insecure=very
qualify=yes

in extensions.conf

[incoming_aql]

exten=mynumber,1,NoOp(— ${CALLERID} calling on aql(${EXTEN}) —)
exten=mynumber,2,Dial(SIP/101,20)
exten=mynumber,3,Answer
exten=mynumber,4,Wait,1
exten=mynumber,5,Voicemail(su4)
exten=mynumber,6,Hangup

where mynumber and mypassword are my aql details…

However that will allow me to dial out to there VM system and get audio. I can call into my handset and it will ring but no audio either way. They suggested using the outgoing proxy… but i have NO idea how to set this up… i have tried putting the proxy address into any of the fields that habe an address to no succes… any ideas?