Couple of Questions:
1. How did you set up the timers in UCD group 417?

2. I assume you set the reroute destination to 433. Did you edit trans.txt?

3. Have you tried dialing 417 from one of the phones to make sure it rings the phones and reroutes correctly if unanswered?

4. If you try dialing 417 from the 800, 801 or 821 greeting, does it route correctly? (If not already programmed, set routing box to wait for digits to test this.)