Paging is always full duplex

I am running on a beagle bone black. System is working very well.

I just installed the paging an intercom module. Paging works for the most part but the pages are full duplex. The phone goes off hook and speaker is on but so is mic.

There is a flag on the paging group setup and either checked or not the page is always full duplex on all the phones.

THe phones are Grandstream GXP2124’s

Thanks in advance for any assistance