I have a request from a customer that would like her phone to ring when another particular extension rings. I realize I can setup ring groups but in this case, it won't work because sometimes people call the extension directly. Example of what the user is asking for: Internal or external caller dials Ext A directly --> Ext A rings & Ext B rings This is simple to do on other systems but I have never tried to do this with 3CX and I can't seem to find a way. I am aware of configuring two phones for a single extension but in this case, Ext B needs to remain a separate extension, just need to ring B whenever A is dialed. At the moment, the only thing I can think of is to tell the user of Ext A to start giving out a different extension to everyone that's actually a ring group extension. This however does not hold up for things like DialByName and probably a bunch of other things. Thanks in advance for any help from anyone that has solved this issue before.