Linksys SPA9XX Series
Linksys SPA Series:
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STEP 1
Press the Paper "button" and then press number 9 which will take you into the network settings. Option 2 will show you the phone's IP address.
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STEP 2
Go to any browser equipped computer on your network and enter the address: http://<IP ADDRESS>/
(where <IP ADDRESS> is replaced by the address that was given to you in STEP 1).
STEP 3
Click on the "Admin Login" button near the top right side of the screen, then click on the "Ext 1" tab
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STEP 4
You need to modify the following information:
SIP Port: 5060
Proxy: sip.nettalk.com
Register Expires: 300
Display Name: Same as user, a name you prefer or left blank
User ID: Account Number provided on CONNECT
Password: Account Password provided on CONNECT
Preferred Codec: Either G711 or G729a work
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STEP 5
If the second extension is needed (if you have a secondary active NT Connect account), click on Ext2 and repeat Step 4. If a second line does not work try using SIP port 5085 or 7060.

STEP 1
Press the Paper "button" and then press number 9 which will take you into the network settings. Option 2 will show you the phone's IP address.

STEP 2
Go to any browser equipped computer on your network and enter the address: http://<IP ADDRESS>/
(where <IP ADDRESS> is replaced by the address that was given to you in STEP 1).
STEP 3
Click on the "Admin Login" button near the top right side of the screen, then click on the "Ext 1" tab
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STEP 4
You need to modify the following information:
SIP Port: 5060
Proxy: sip.nettalk.com
Register Expires: 300
Display Name: Same as user, a name you prefer or left blank
User ID: Account Number provided on CONNECT
Password: Account Password provided on CONNECT
Preferred Codec: Either G711 or G729a work

STEP 5
If the second extension is needed (if you have a secondary active NT Connect account), click on Ext2 and repeat Step 4. If a second line does not work try using SIP port 5085 or 7060.
Updated on: 01/05/2024
Thank you!