I live in Hong Kong, China.
I have an Apple Time Capsule 802.11n Wi-Fi Hard Drive as a modem.
I have an NEC NTA-3110 Router.
I have a 8 MB Wireless connection with a WPA2 encryption connected via a XBOX 360S Built-in Adaptor.
My UPnP status is unknown.
I used to have an Open NAT before I lost my connection.
My error status report after a failed network test has
X : 0008 - 0019
ID : 0000 - 0016
with all other fields being 0000 - 0000.
I have a DSL connection provided by PCCW.
After the error message, the XBOX says that it could not connect to the specified wireless network. I tried all of the listed suggestions, down to the online help procedures. None of them produced a consistent result.
I recently moved my XBOX to a different wireless network and back. That network was 100 MB and was unspecified. The connection failures occurred after I moved the XBOX. Could it have some connection to the issue? After dozens of attempts, the connection works intermittently, only to fail again the next day. I retried the procedures and the connection worked intermittently again. It went back to square one the day after that.