I know that this is an unusual/unnecessarily old fashioned configuration but my rural location prevents true voip and multiple lines. I have 3cx configured with a single PSTN line using a SPA3102. 3CX is used mainly to allow simple local calls between extensions. Prior to installing 3CX a receptionist was able to answer calls and then transfer them to mobile/cell phone numbers using the [RECALL/FLASH] button, dialing the cell number and replacing the hook. This made use of the centrex exchange pbx (featureline in the UK) features. Is the same effect achievable in 3cx? I have read other threads of peoples struggles with the hook flash configuration. My ideal configuration would be: 1) External caller makes incoming call on PSTN Line 2) SPA3102 answers and routes to 3CX Digital Receptionist 3) Depending on which option is selected 3CX will transfer the call to an extension which issues the flash command to the 3102 and dials the desired mobile number to transfer the call. I know this isn't the purpose of using a pbx but it is not feasible for me to have extra voip or pstn lines to allow true transfers.