Monitoring Gateway SIP Trunk Status via SSH through Command line

I don't really know Cisco very well, might be best to talk with LM support.

In case it is an issue with ssh and Expect, try switching between the jsch and sshj libraries as mentioned at https://www.logicmonitor.com/support/terminology-syntax/scripting-support/groovy-or-expect-text-based-interaction

Expect.open(host, user, password, "lib=jsch");
Expect.open(host, user, password, "lib=sshj");