Can anyone point me to a 'How To' on using PuTTY to verify Node-to-Node connectivity?

I have a five (5) system group, two Axxess and three Mitel 5200's that work almost fine, except two nodes aren't talking to each other, only.

They each talk fine with the other four nodes, just can't see each other directly.

Alabama & Ohio are Axxess.
Bristol, Chicago & Kansas are Mitel.


Chicago to
Alabama, Ohio & Kansas works.
Bristol, UK No Workee.

Bristol to
Alabama, Ohio & Kansas works,
Chicago No Workee.

Alabama, Ohio & Kansas can talk to all peers.


Have been told I could use PuTTY from one of the Problem sites to the other for troubleshooting, but don't know how to run on those Mitel Systems.


Error Samples:

05:182- 23:27 08-20 M5122 WRN HW CP Nodes Did Not Respond To Broadcast Message From 'PP022' : Nodes 3


-03:249- 19:45 23-08 M5122 WRN HW CP Nodes Did Not Respond To Broadcast Message From 'PP022' : Nodes 5


TIA

:bang:


Carmac