MiVB 3300 9.1.9 version with Micollab 6930 phones This is the second phone to do this ( it just randomly started). The ext can make calls but when called internal it shows busy. I have deleted the extension and built it back (trouble comes back). The problem will follow the extension and not the phone. I have made busy and reset in mait commands. If you take it out of the multi-device user group it rings as should but when in that group it goes busy. The ext only has a appearance of her phone twice on the phone, no other extensions. Anyone have a idea as to why this is happening?