So I have 2 PBX’s here. One is the Panasonic KX-NCP500 which seems to be a legacy system that does not use SIP (Correct me if I’m wrong) and the other is FreePBX on a Raspberry Pi. Both systems are working with no issues. I was just wondering how I would be able to combine these two very different systems if even possible. I did read the programming manual for the Panasonic and it does have virtual SIP Gateway and Virtual SIP Extensions. Don’t believe a TIE line would work in this situation. I did read something about a PRI card and QSIG but cannot really install a PRI card on the Raspberry Pi lol. Any sort of direction would be helpful as I am still pretty new to this. These are the only systems I have ever worked with. Made and programmed the Raspbx myself to get get my feet wet in the VOIP world. Thanks!
Edit: If it helps I am using FreePBX 220.127.116.11 and Asterisk 13.19.0