DCS Connection

[g0lgj]

Hi pulling what hair I have left out.
D-STAR mode
Hotspot connected to Mobile phone network using my callsign

MB6DE DVPRT1 board connected to my own network

G0LGF using his hotspot completely separate network
Connect all 3 to DCS005B and or XLX005B and cannot hear each other
Connected to DCS061B can communicate no problems
No probs on REF

Checked we are connecting to the same ip for DCS005 in /usr/local/etc/DCS_Hosts.txt no additional hosts files specified.

Connect to DCS477 for example also works.

Anything else to look for ?

Mark G0LGJ