Want to communicate between two paticle core from separate locations

I ve particle core board, worked with single board successfully. But now want to communicate between two cores from different locations.

Can you provide more information of what data you are sending, the frequency etc? It’s hard to give suggestions with your current post.

This might be a good start: https://docs.particle.io/guide/getting-started/examples/photon/#the-buddy-system-publish-and-subscribe