There was a company that made a 2616 set emulator - about the size of a modem. You plugged it in and when you called the box, it spoke back the DN you were calling from. It could also call you back if you wanted. Company is out of biz.
I am trying to get some other company to make a product like this again
- who does not matter - just a company that could be convinced there was a market for such a contraption, and at a minimal cost.
If you can spare 3 mouse clicks, go here: