Srtp; Figure 8: Enabling Srtp - Grandstream Networks UCM Series Security Manual

SRTP

SRTP is supported on UCM to secure RTP audio stream during the call. By default, it's disabled. To use it,
please configure under extension configuration dialog"Media" tab when creating/editing an extension. If
SRTP is enabled, RTP data flow will be encrypted.
As shown above, users have two options while enabling SRTP under extension parameters:
▪ Enabled and forced: On this case, the extension does support SRTP for secure audio and doesn't
allow any calls without SRTP.
▪ Enabled But Not Forced: The extension does support SRTP, but can allow negotiation to setup
calls without SRTP in case the other end doesn't support it.

Figure 8: Enabling SRTP

UCM Security Manual
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