Now that Phil's Internet connection is better than it used to be, it is likely that direct MF/SF trunking will work better than it used to. Phil set up a test monitor; inbound trunking access needs to be set up for it.
Things to test:
If these work, then trunking could be furnished using the appropriate protocols, which was the end goal of this project.
Edit: These switches are moving to the new Denver museum. Work may possibly continue along these lines there.
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