I wonder if anyone can help with a curious problem we're having. I've recently upgraded our 3CX system from 6.x to 7.1.7139 and have a small system of 6 Linksys SPA941 handsets attached to it. With the upgrade we seem to have introduced a slight bug, resulting in the following scenario; 1. External call comes in from number 01234 567 8901. This is shown on the caller of all handsets as '012345678901' as intended. 2. The user on extension 101 picks up the call. 3. They then transfer the call to extension 123, as it is intended for that user. 4. Caller ID on extension 123 shows that it is receiving a call from extension 101, and the same information is reflected in the 3CX extension monitor. 5. The user at 101 transfers the call, connecting the external user at 01234 567 8901 to user 123, yet the caller ID on extension 123 still shows the open call as being to 101 rather than the external number. 6. If while the call is still in progress, you look at the extension monitor in the web manager, the statuses are as follows; 101: Registered (idle) 123: Busy. Connected to 101 Anyone got any ideas on how to resolve this? It's a frustration, as the number changing from 101 to the external number was previously the visual cue to the user at 123 that the call was now fully transferred and they should now address the original caller from 01234 567 8901. Any help appreciated. This wasn't the behaviour that we saw previously with v6.x of 3CX, so I was wondering what could be different in the settings.