The server to encrypt calls and messages of the enterprise, what software is?

Good afternoon.
Is there any software that when installed on a dedicated server
would give the ability to call and write messages through their customers and at the same time
all would be the most Osipovna?
Can anyone implemented similar and share experience?
March 19th 20 at 08:46
1 answer
March 19th 20 at 08:48
Asterisk.
To almost any XMPP can be screwed encryption.
Cisco has something like that is, g:Cisco+Jabber

Find more questions by tags Information security