I never tried to get the 3com system to interface with my main network....I just wanted to see how it worked between the two units I bought. I moved them around the house, and they could never see each other on any setup (Win98 and ME), 3 I-Openers and 2 other std computers.
And they can ping themselves just fine?
Well, were it me in this case, I'd try this.
Setting both HPNA devices to use static IP's. 10.0.0.1, 10.0.0.2, no gateway.
Connecting both through 1 jack with a duplexer, to see if the HPNA devices are the problem, or the way the phone lines are set up.
As far as tech support goes, my experience with all types of so-called tech support has been miserable. Most tech support people are kids making $8 hr....what kind of support can they give you?
They can bump you up to the next tier of support. ($20 an hr.)
IME, 3com's networking support has always been good, and I've found that they usually have some sort of beta software, firmware, or drivers available, even if they don't post them.
(They'd just have you sign up for the testing program.)