Aastra Pro 160 to Freepbx Trunking

I have an Aastra Pro 160 and a Xorcom PBX runing 2.6.0.1 that I’m trying to get some trunks up on.
I have a working IAX trunk from the Xorcom unit to the Aastra Pro. However I have not been able to get the trunk to work the other way around. Calls out from the Xorcom to the Aastra Pro work fine, however the other way fails.

I’ve got the following config setup on the Xorcom Unit the Aastra provides very limited setup. I can go with a IAX or SIP Trunk, either way I just want to get the trunks working.
Outgoing settings:
Trunkname: Offsite
host=192.168.113.56
user=100
secret=f899139df5
type=peer
qualify=yes
context=from-internal
auth=md5

Incoming Settings
User Contest: 100
secret=f899139df5e1059396431415e770c6dd
type=user
allow=all
context=from-trunk
auth=md5

The aastra settings are via web only and only offer the following(I’ve been trying to use an Aastralink Trunk):
Hostname 192.168.1.49
Username 100
Password f899139df5
Port 4569