The build that I just completed has 5 sites:
1. NL T-Marc 340 at one site that has the NDN/LODA circuit. I think LODA may mean something like Light Over Dedicated A*****
2. NS Business Fibe connection with an R3000
3. NL Home Fibe with HH3000, and a pfSense behind it, routing packets to the NGN SBC via our main office in NL
4. NB Home Fibe with HH3000, and a pfSense behind it, routing packets to the NGN SBC via our main office in NL. Requires a NL number as there is no route to the NB NGN SBC
5. Overseas office with local telco fiber, and a pfSense behind it, routing packets to the NGN SBC via our main office in NL
Unfortunately, I AM using the HH3000 as it is intended due to the Advanced DMZ being FUBAR on that device, and BA has no intentions of fixing it.
Benefit of having the T-Marc 340 at our main office is we retain control over our 'usable' IP, along with the full /29 that we have, thus effectively giving me a total of 7 publicly routable IPs that I can use as I see fit. I also have a second interface on the T-Marc dedicated for the connection through to their SBC(normal procedure for this would be to just port it through to a VLAN on the same interface).