Incoming calls hangup/not routed

My setup:

VOIP Provider: Vitelity

Inbound Trunk:

type=friend
username=xxxxxxxx
secret=xxxxxxx
context=from-trunk
insecure=very
canreinvite=no
host=inbound18.vitelity.net
disallow=all
allow=ulaw&gsm

Inbound route:
setup with an ext as destination - for any DID/CID (tried IVR as well)

General setting:
Set to accept anonymous calls

extensions_custom.conf has:
[outgoing]
exten => _1NXXNXXXXXX,1,Dial(SIP/${EXTEN}@vitel-outbound)
exten => _011.,1,Dial(SIP/${EXTEN}@vitel-outbound)

; e911 must be enabled. see DIDs > NPANXXNXXX > Action > e911
exten => _911,1,Dial(SIP/[email protected])

[incoming]
exten => MYDID NUMBER,1,Answer

I am able to make outgoing calls. However, incoming calls do get routed to my PBX from Vitelity but I get a busy/hangup tone. PBX is not routing it to the extension/ivr.

What am I missing?

Thanks

PEER Details

Inbound Trunk:
type=friend
username=xxxxxxxx
secret=xxxxxxx
context=from-trunk
insecure=very
canreinvite=no
host=inbound18.vitelity.net
disallow=all
allow=ulaw&gsm

And the register string filled in.

and inbond route with did filled in and it seems to work ok