We cannot access the voicemail. Whenever you hit the VM button it just come up blank. It does not say inactive feature. I swapped out the BFT but the same result comes back. The hard drives look active with all green leds. There are no sounding alarms or blinking lights other than the red alarm led. Also, cannot acces the element manager as well. PRI is working along with other features but not the voicemail. Thanks in advance.