I'm not sure when this started but it's on a phone number that I call and calls me more than any others.
What happens is, on most inbound or outbound calls involving this number cut the microphone. On outbound it is cut as soon as I dial it. On inbound as soon as I answer. It's not every time.
It appears to be the 202 because it happens on multiple phones hooked to it. It doesn't appear to be the SP because it happens no matter which one I use including GV and Anveo.
The last 5 digits of the number are 10117. The zeros and ones make me thing that maybe the 202 is interpreting something incorrectly.
The way to solve the problem is to flash-hook twice. The dial tone on the first flash sounds different than a standard one. This may be a feature of all flashes.
Any suggestions appreciated!