Вроде разобрался
Если кому то нужно вот конфиг который у меня взлетел
[PROVIDER]
type = registration
transport = transport-udp-nat
outbound_auth = PROVIDER
server_uri = sip:PROVIDER-SIP-SERVER
client_uri = sip:SIP-LOGIN@PROVIDER-SIP-SERVER
retry_interval = 10
contact_user=SIP-LOGIN
[PROVIDER]
type = auth
auth_type = userpass
password = SIP-PASSWORD
username = SIP-LOGIN
[PROVIDER]
type = aor
contact = sip:PROVIDER-SIP-SERVER:5060
[PROVIDER]
type = endpoint
transport = transport-udp-nat
; Контекст должен быть прописан в Dialplan
context = CONTEXT
dtmf_mode = rfc4733
disallow = all
allow = alaw,ulaw
direct_media = no
from_user = SIP-LOGIN
from_domain = PROVIDER-SIP-SERVER
outbound_auth=PROVIDER
aors = PROVIDER
[PROVIDER]
type = identify
endpoint = PROVIDER
match = PROVIDER-SIP-SERVER