b) Setup a static route in your router that makes 192.168.1.2 the gateway for all traffic destined for the 172.27.35.0 subnet.
c) On the Ooma, place 172.27.35.1 (the IP address of it's LAN interface) in the DMZ.
d) You should now be able to login to the Ooma as http://192.168.1.4 or http://172.27.35.1
e) If you would rather use a name, edit the hosts file on your computing platform. On a Mac or Linux it is /etc/hosts. On Windows, someone here posted that it is c:\windows\system32\drivers\etc\hosts. When editing this file, add the line "192.168.1.4 setup.ooma.com", or "172.27.35.1 setup.ooma.com"
Hope this answers your question ....
Ooma equipment: Hub ; Telo + 4 handsets
Ooma service: Annual Premier subscription