2 second delay before the calling party can hear any audio

I tried adding a Grandstream GXP2170 to my existing FreePBX server hosted on CyberLynk, and found that on incoming calls there is a two second audio delay to the calling party. This happens when calling from any phone, internal or external. So, if one of my business customers anwers an incoming call and says “Hello, thank you for calling X business” the person calling does not hear the greeting.
Once connection is made there is no ongoing delay or echo. When I call another phone from the Grandstream, there is no delay. I have 11 other phones in four locations without this issue. I added a new server, loaded FreePBX 17, adn added the GXP2170 updated to the latest firmware without inbound our outbound routes (to eliminate a service provider issue). When I call the Grandstream from another phone dialing the extension only, the problem persists.
I haven’t found a resolution searching the forum. Is anyone using the Grandstream GXP phones on a hosted FreePBX server without this issue?