I had it working good till I had to put in the new VM card when the old one went belly up. I have yet to get it to work, it keeps going to 777 voice mail and asking for you to enter the number you want. I am the one who set it up before , but I can't remember how I did it, It was hard, but I did do it! I don't do many changes on the 5 units we have ( merlin legend ) I want it to go to ext 291 , but it won't take it in group coverage?