I have a viking call announce unit installed at a Facility that locks their doors throughout the day for various reasons, and wanted a door bell of sorts to call certian stations when visitors arrived. I have it installed on a CO8 card in the switch and it rings multiple stations throughout the building when activated. Works great, however, intermittently when someone in the group is on the phone, the call is transferred to voicemail, and the person at the door gets a vm recording, instead of a live person. When no one is on the phones it works perfectly. What options do I have to get around this. Loud ringing bell is one, but it will not cover all the departments that get this call. Any ideas?
