If you have MSOffice 2007, then you may discover MSIE (Internet Explorer) v6.x or v7.x stops working with many Digi products - such as the DOIAP.
This is due to MSOffice causing MSIE to send a very long header field which the DOIAP doesn’t like, so hangs up. However, we >should< just ignore/truncate the field since we don’t even use it.
Short term fix is to use FireFox/Mozilla.
There is a NEW DOIAP firmware (82000770_G1) being released that fixes this. Other products like the DOSP, DOIA and TS1-16 line will need a refresh beyond “U”, but I’m not sure the timing of such releases.