Registering FusionPBX with Firstcom Europe / voip.co.uk SIP Trunks

Ok, after being dug out of a hole by @KonradSC I now have inbound calls working!

Here are the Gateway settings, with [Advanced] selected:
Gateway: <Your gateway name>
Username: SIP AOR Username
Password: SIP AOR Password
Proxy: single-01.proxy.voip.co.uk
Register: True
Auth User Name: SIP AOR Username
Extension: auto_to_user <- This is the magic bit KonradSC added
Outbound Proxy: single-01.proxy.voip.co.uk
CallerID in From: True
Domain: Your chosen domain
Context: Public
Profile: External
Enabled: True
Description: <Description of your gateway>

I also set up the IP's of voip.co.uk's SBC's in domains:

Advanced Menu -> Access Controls
Click domains
Click on the + sign on the right to add each IP below:

Type: Allow
CIDR: 193.203.210.38/32
Domain: <blank>
Description: voip.co.uk proxy 1
[Save]

Type: Allow
CIDR: 193.203.210.39/32
Domain: <blank>
Description: voip.co.uk proxy 2
[Save]

Type: Allow
CIDR: 193.203.210.29/32
Domain: <blank>
Description: voip.co.uk proxy 3
[Save]

[Save] again

If you have any questions don't hesitate to get in touch so I can pay it forward. Thanks @KonradSC you are a star and I owe you one!

Original article

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