Future-Nine Locktec WP04 settings

10/14/2011. Got this nifty small WIFI phone from yippz.com for my wife going overseas on extended trip to keep in touch. We use future-nine.com as our VOIP provider. I tried several settings that did not work. Finally the settings that worked well were:

SIP User name: The 8 digit account number
SIP Password: Your account password
SIP Display Name: The 8 digit account number
SIP Domain: 64.251.23.244 (for incoming, 65.111.186.2 for outgoing)
SIP Domain port: 5060
SIP Out Proxy: leave as is blank
STUN: leave blank as is.
Keep Alive Timer: leave at 0000

Notes:

You can also use 64.251.23.244 for proxy but it seems not to contribute to performance. Same thing for STUN server (75.101.138.128 instead of stun.future-nine.com).

The reason I am using direct IP address numbers is that I got a "DNS failure" message when trying the URL incoming.future-nine.com.
PAP2 device which I also use at home can input DNS server addresses but the Locktec WP04 cannot and may fail using the router DNS.