From VoIP.ms Wiki
Device Configuration Guides Linksys SPA941 NA
The Linksys SPA941 IP telephone can be configured as a two line or, via a simple software upgrade, a 4 line full phone with pixel based graphical display, speakerphone and headset port.It is configured for DHCP, this means that it gets its IP address from your DHCP server automatically.
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.
Go to any browser equipped computer on your network and enter the address: http://<IP ADDRESS HERE>/
Click on the "Admin Login" button near the top right side of the screen, then click on the "Ext 1" tab.
You need to modify only a few parameters from the factory default. They are listed here:
- SIP Port: 5060
- Proxy: Houston.voip.ms (you server)
- RegisterExpires: 180
- User ID: Your user ID (123456) main account or sub account (123456_xxx)
- Password: Enter the password that you chose when you signed up your voip.ms service.
- Preferred Codec: G729a
If the second extension is needed, click on Ext2 and repeat Step 4.
You are ready to make some test and calls.
Note: We have seen some customers installing the SPA941 behind a firewall which blocks ICMP packets causes problems with registration. Try turning off anything blocking your firewall.