1- Creating a SIP trunk between 3CX and Panasonic TDE-100
2- The ability to make calls internal calls between extensions behind the 3CX and the TDE-100
P.S: 3CX and the TDE-100 are not on the same network
We succeeded to create the Trunk and get it in service and to make calls from the TDE-100 to the 3CX but the other way around is not working! We are getting a response "Not Found"