Auto Answer Specific Extension on Cisco 7940

I currently use a Cisco 7940 IP Phone, which doesn’t fully support FreePBX paging. My only option to utilize paging is to set the phone to auto answer, but that opens up auto-answering to everyone.

Is it possible to have the phone only auto answer to a specific extension (in this case, the paging extension (which on my box is PAGE [7243]))? If so, how would I go about doing so?

Yes. on the 7940 its a 2 line phone. set line 2 as intercom. add the line 2 as another extension. example: line 1 is ext 301 so set line 2 as ext 3301. then set line 2 to auto answer. now when you dial 3301 from another phone the paging will answer.