1. Browse to the handset's web GUI
   This can be obtained from the handset by opening the menu and selecting option 9
2. Click on admin in the top right and sign in as admin
3. Browse to the Extension tab you want to configure, in this guide we will be configuring Ext 1
4. Scroll down to "Proxy and Registration"
   In Proxy enter: sbc.insmartcloud.com
   In Outbound Proxy Enter: sbc.insmartcloud.com
5. Scroll down to "Subscriber Information"
   In "Display Name" enter: Extension number of the user
   In "Password" enter: SIP Password
   In "Auth ID" enter: SIP Username
   In "User ID" enter: Lineport before the @ symbol
   Set "Use Auth ID" to: Yes
6. Scroll down to "Audio Configuration"
   In "Preferred Codec" select G711a
7. Press "Submit All Changes", this will provision the phone and force it to reboot.

8. If the extra line keys are lit up following this you can go to the Phone tab and set the line Keys to Disabled then press "Submit All Changes"