I recently moved my offices to a new building. I plugged in everything in the exact same way as it was at my old location.

Of the 9 extensions, 4 are working improperly. On the LCD at the phone, it lists the correct extension. But when I lift up the receiver, it indicates, with a red light, the wrong extension. I also cannot acces the VM system through these 4 extensions.

Extensions 100-103 and extension 108 work flawlessly. Extensions 104-107 are all malfunctioning the same way.

Phones: Vodavi 24 Button Exetutive Key Telephone IN9015-71

The Brain and VM module don't have model numbers on them, They're just labeled "Vodavi"