Voice-Messaging Security
To configure security for Unified Communications Manager voice-messaging ports and Cisco Unity devices that are running SCCP or Cisco Unity Connection devices that are running SCCP, you choose a secure device security mode for the port. If you choose an authenticated voicemail port, a TLS connection opens, which authenticates the devices by using a mutual certificate exchange (each device accepts the certificate of the other device). If you choose an encrypted voicemail port, the system first authenticates the devices and then sends encrypted voice streams between the devices.
Cisco Unity Connection connects to Unified Communications Manager through the TLS port. When the device security mode is nonsecure, Cisco Unity Connection connects to Unified Communications Manager through the SCCP port.
![]() Note |
In this chapter, the use of the term "server" refers to a Unified Communications Manager server. The use of the phrase "voicemail server" refers to a Cisco Unity server or to a Cisco Unity Connection server. |