John,
Were the phones dead or just not programed? Did you turn off the switch on the motherboard for 30 sec. while the power was off and switch it back on before you power up the k.s.u.? Anytime you have a power loss long enough to drain the onboard battery (actually, it's a high capacity capacitor) or just a little glitch in the system you must default the system.
If you have any futher questions about Vodavi analog, digital (first series) and DHS, feel free to email me. I sold and serviced Vodavi systems exclusively for 14 years.

Bob