MicroCell -- Flashing 3G, No connection
Problem appeared last week on a microcell that had been working OK. 3G light is flashing green, no connection. No changes here that I know of. Internet is Fairpoint DSL in NH.
Looks like the same problem as in this thread -- seemed there that the problem went away without explanation.
I have been through all the Tier-1 actions and Chat support with no success.
Crux of the matter seems to be: How can I verify that ports 4500 and 500 are open from my site to AT&T? I have unix shell access here (Mac OS) and I'm pretty tech savvy.