Opera 4 IP System Manual page 11

Is Universal
Plug n Play
enabled on your
Router?
Yes
STEP 2. Connect the IP system phones to the LAN
The IP system phones request an IP address from the DHCP
server in the router. (Note: If DHCP is not enabled in the
router, you need to manually set the local IP address in each
Phone; see phone installation guide for this).
The phone then Auto-discovers the advantage system and
is assigned an IP registration name and an IP registration
PIN along with the WAN (public) IP address of the router.
That's it. Your IP system phone should now be
connected to the Opera system and be able to make and
receive calls
STEP 3. If you wish to use your IP system phone at a remote
location
Just take the IP system phone home and connect it to you home
LAN. The IP system phone will request an IP address from the
DHCP server in your router. (Note: If DHCP is not enabled in the
router, you will need to manually set the local IP address in the
Phone, see phone installation manual for this). Once it has a Local
IP address, it will then connect back to the system over the
Internet.
No
Manually Forward VoIP ports on the Router to the
internal IP address of the system
Browse to the Router's Programming web page
and program port forwarding, so that the following
packets are forwarded to the IP address of the
system.
TCP packets arriving on port (5075)
UDP packets arriving on ports (50000-50031)
TCP packets arriving on port (7000) forwarded to
port (80).
Opera 4 IP System Manual
Page 11