The latest from DoT head is that it wasn't him, it was Congress last night, today it was a contractor, some poor schlub screwed up a router.
Also, just to be clear, TDM, time division multiplexing, is digital not analog, and it is over copper, usually through a Class 5 switch. So to correct DoT, it was not an analog issue it was an old digital system and over copper. Copper does not really degrade.
One should not pretend to be smart, especially if one isn't.
The problem is a lot deeper than this. I wonder how deep?
Just an historical note. In the late 1990s I founded and ran an international IP based company with locations in about 20 countries. We had a Nortel Class 5 TDM switch which we interface with Motorola IP converters, then through hundreds of Cisco routers and connected in Central and Eastern Europe with fiber often run along Gasprom lines. So I am personally familiar with these networks. I have seen issues interfacing between the US, Poland, Russia, Czech Republic, Korea etc. Thus I have a basis to question many of the statements.

