Well, I've never seen such a device, and my DLink devices do not show up on any iphone or any wireless equipped computer. They readily connect to my router however and appear in the routers device table. That much works.
Yes, I see what you mean. If the DCH is not connected to wifi, then it's broadcasting. Once it's connected to the network the broadcasting is turned off. Even so, I connected the iphone to the DCH using its SSID, and then connected it to the network, the iphone app could no longer find it.