I had a whole house DVR that records up to 2 shows as well as 2 additional HD set-top boxes.
I also have the FIOS Actiontec MI424WR router.
I was told the router would work fine with the new Quantum DVR and equipment but it is not.
If you install a new Quantum DVR to replace the old one but you do not replace your router, you may run into the same problem.
During set-up of the new router on Step 2: Software Download if you get error code 2202
(2202 on DVR, 2202_108 on TV screen) that matches the same problem I had.
I had to talk to Verizon and they said I'll need a new router. The Actiontec MI424WR does not work with the new Quantum DVR's.