Have a Linksys AGO41 and RT31P2 adaptor, and despite various efforts can't get the adaptor to logon to my Sipgate account. It'll connect using a soft phone (X-lite), but not the adaptor.

Tried all sorts of port forwarding, and various combinationss. Setup is:
AGO41 - 192.168.7.1 , network gateway as it has the ADSL adaptor in it. Set up as DHCP server (7.50-70), NAT enabled, Dynamic Routing RTP1 enabled. Single ports and groups opened to RT31P2 as suggested by VoIP provider (Sipgate) Ports externally tested by Shields Up! (GRC) and showed initially as stealth, and now as closed(?) apart from port 10000 - Stealth, (10000 UDP, 5004-5011 TCP/UDP, 5080-5086 TCP/UDP, 9000-9001 TCP/UDP)

RT31P2 - 192.188.7.10, DHCP and NAT disabled, Dynamic Routing enabled RTP1, Internet Setup as Fixed IP (80.229.253.103) as anything else gives offline, device physically cascaded in to AGO41, other settings as suggested and I get ‘Can't connect to login server’ as status.

As a test I set up X-lite on a laptop and it connected and I can get test calls etc, without changing any port options in the AGO41. After I did this ‘Go to the X-Lite manu and change "Listen SIP Port" to 5080 and "Listen RTP Port" to 9000.’

I’ve tried all sorts of combinations in the RT31P2 and get the same message. Does the RT31P2 use specific ports to listen? If so could I translate those at the gateway? If I disable NAT in the gateway I lose my http connectivity, and I’ve other PCs and devices connected to the network. It didn’t appear to make any difference which ways around the two routers were cascaded. I’m determined to connect this device, but it has taken 2 weeks so far!