My network:

Cable Modem --> Linksys Router --> SPA --> Regular Phone Unit.
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if you SPA is still locked, please unlock it using these instructions.
http://blog.bentosys.com/article/how-to-unlock-a-sunrocket-gizme-linksys-spa2102-r

Once you have SPA web access enabled.

place the internet cable to WAN port and connect a direct cable from LAN to computer LAN port.
Phone cable to line1 from your regular phone.
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To get the ip address of your Linksys ATA:
Pickup the phone and dial: ****
then dial: 110#
The device will read the ip address back to you..
Write this address down. (example: 192.168.0.50)


To configure the SPA adapter for Gizmo Project:
Login via the Linksys\Sipura web interface.
In browser just type the ip address you retrieved by dialing **** and 110# above and press enter to connect.
If you're not already logged in as "admin" click on the "Admin Login" link in the upper right corner.
Also make sure you're in "Advanced View" which is also at the top of the page. This will allow you to see all the options that need to be set.


SIP Tab:
Substitute VIA Addr: YES
STUN Enable: YES
STUN Server: stun01.sipphone.com
NAT Keep Alive Intvl: 15
Click "Save Settings"

LineX Tab: (where X is the 1 or 2 depending on where you have Gizmo setup)
Line Enable: YES
NAT Mapping Enable: YES
NAT Keep Alive Enable: YES
SIP Port: 5060 (if Line1) or 5061 (if Line2)
Proxy: proxy01.sipphone.com
Use Outbound Proxy: NO
Outbound Proxy: keep blank
Use OB Proxy In Dialog: NO
Register: YES
Register Expires: 3600
Use DNS SRV: NO
DNS SRV Auto Prefix: NO
Display Name: 1747xxxxxxx (Your Gizmo sip number)
User ID: 1747xxxxxxx (Your Gizmo sip number)
Password: (Your Gizmo password)
Use Auth ID: NO
Preferred Codec: G711u
Use Pref Codec Only: NO

Click "Save Settings"
You should now be registered and be able to make\receive calls.
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Note: Now at this time SPA is connected to internet cable coming from router and LAN cable is disconnected from computer.
please choose DHCP.
1. Under Router, WAN Setup:
Host name and Domain name are blank.
2. Under Voice, System: Provision Enable = no. Update Enable = no. RTP-Start-Loopback Codec = G711u
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