I have seen when the carrier sent Caller ID name/number info in a wierd format for no reason cause an XTS with MPBe on it continually reboot. It would happen once in a great moon but when it did, BOOM there when the system. It would come back up then as soon as another call would come int BOOM. Call the carrier tell them to take the name/number option off and all was well. They would turn it back on and it would work fine. Just once in a blue moon it would send some wierd info to the XTS causing it to crash. Vodavi did not have an answer for this at the time.

On another note Derrik: you do have all the dip switch settings correct on the combo card, correct? and the clocking switch?