i got an asterisk@home 2.7 box setup with zap and voipbuster

the zap works and i set it up to dial using my landline and fxo card
when i dial 99= something it ommits the 99 and dials the rest

i want to set up the voipbuster trunk to do the same with 88 but for
some reason it wotn connect

i used the default settings im behiond a router and i put nat to yes
but nothing


what do i need to do ? all my phones are sip phones linksys spa 921

i can see from the flash panel its going through to trunk but nothing
happens then times out, i cant hear anytihng

i setted up asterisk as sip trunk not iax2


thanks in advance



OUTGOING SETTINGS

host=194.120.0.198
nat=1
secret=XXXXXX
type=peer
username=XXXXXXXX

//////////////////////////////////

INCOMING SETTINGS

context=from-pstn
secret=XXXXXXXXXXXXXXX
type=user


/////////////////////////////

REGISTRATION

XXXXX:XXXXXXXXXX@194.120.0.198

////////////////////////////////

SIP.CONF

; Note: If your SIP devices are behind a NAT and your Asterisk
; server isn't, try adding "nat=1" to each peer definition to
; solve translation problems.


[general]
port = 5060 ; Port to bind to (SIP is 5060)
bindaddr = 192.168.100.69 ; Address to bind to (all addresses on
machine)
disallow=all
allow=ulaw
allow=alaw
context = from-sip-external ; Send unknown SIP callers to this context
callerid = Unknown


#include sip_nat.conf
#include sip_custom.conf
#include sip_additional.conf


//////////////////////////////////////