How to find the IP address of a Linksys SPA 942 or Cisco SPA 504G IP Phone
Follow these steps to find the IP Address of your Linksys SPA 942 Handset:
Press the settings key:
Use the four way directional scroll key and move down to option number 9 – Network.
Press the select softkey and the current IP address will be displayed. Make a note of the IP address and then press the cancel softkey twice to exit the settings menu.