I have ben using 3CX Phone to connect to external SIP-providers. (I do not have an IP-PBX.) The phone works fine. However, there is one thing I can't find, so I would like to know whether there is no such feature at all, or is it just me unable to find it somewhere. I have quite a number of contacts whom I call using different providers, depending on my location etc. However, when I add a phone book record while connected to Provider A, I do not see that record after I reconnect to Provider B. It seems like I have to add such contacts to the phone book for each SIP account I have, which is quite inconvenient. Is there really no way to use the same phone book for all my accounts with external SIP providers?