As of 8am this morning, T-Mobile seems to be having problems with their EDGE based T-Zones service. A call to T-Mobile’s customer service number confirmed this. They are said to be fixing the problem and hoping to get the service back up asap. No ETA was given.
If you are using a Windows Mobile phone you will get the “The remote party has terminated this connection” message.
UPDATE: The EDGE network is up and running as of sometime around 6:15pm.