Yes im a newbie just playing with a new 3CX instance. I have 1 SIP Trunk with 3 DID's going to 5 Cisco SPA504G handsets. 3CX phone provisioning assigns the extension to all 4 line/blf buttons. I will keep the 1st button as is the extension, but what are some suggestions for the remaining 3? Shared Parking? BLF of other extensions?