I am pretty dissatisfied with the typical options for encryption found on standard IP phones like those from Cisco and Polycom.
Is there a standard way to do point-to-point voice encryption at the PBX level which I can set up independently? For example, let's say I am using FreePBX and I want to encrypt the UDP voice packets being sent from one IP address to another and I know both the sender and recipient addresses. Is there a software-supported way I can provision the PBX's on both ends with a symmetric key to make sure those UDP packets are encrytped enroute with a key known and supplied only by the sender/recipient?
