3cx has been successful for us, so we want to add our other business (which currently uses a conventional landline) into our 3cx setup, using the same staff to answer calls from both. This raises a few issues we cannot figure out ourselves. We're just experimenting trying to make it work. Can it be done? These are the current problems we have: We can get calls coming in to the main menu showing that they are from the other business, but once the caller selects a menu option, that information disappears and the person receiving the call cannot tell which business it is coming in from. The businesses work different hours. Since we want the calls from both businesses answering by the same people, we cannot simply set extensions to out of hours and the 3cx phone system only allows global hours, so how do we stop calls coming through from the business that closes earlier at the appropriate time? The 2 businesses are separate entities, so we wouldn't want the outbound calls made by one business showing up on the other business's phone bill. How do we stop this? Should we register another voip provider trunk?