I just wanted to confirm that the suggestions made by johnjces and jnetman1 are what ultimately solved this problem for me as well.
Thank you sirs.
To be clear,
I changed the /tftpboot/sip.cfg config from:
voIpProt.SIP.alertInfo.1.value="Ring Answer"
to:
voIpProt.SIP.alertInfo.1.value=“info=Auto Answer”
I’ve been having other provisioning issues so I just reset the phones to default and formatted them to ensure they got the updates to sip.cfg.
Then I enabled the intercom on all phones by entering *54 .
I can now call my new pageAll extension I created and all I can hear my voice coming out of all of the speakers. I’ve still don’t like the sound of my own voice from the outside.