Enabling Encryption For Videoconferences - Avaya Scopia XT7100 Deployment Manual

4. (Optional) If required by your organization's security policies, continue with
Encryption for Videoconferences
Related Links
Securing Connections to the XT Series Using TLS

Enabling Encryption for Videoconferences

About this task
The system can secure videoconference sessions via encrypted connections, in both point-to-point
calls and videoconferences, as follows:
• For SIP connections, you can encrypt the actual media of SIP connections via SRTP.
Secure Real-time Transport Protocol (SRTP) adds security to the standard RTP protocol,
which is used to send media (video and audio) between devices in SIP calls. It offers security
with encryption, authentication and message integrity. The encryption uses a symmetric key
generated at the start of the call, and being symmetric, the same key locks and unlocks the
data. So to secure transmission of the symmetric key, it is sent safely during call setup using
TLS.
• For H.323 connections, encryption is enabled via H.235.
H.235 is the protocol used to authenticate trusted H.323 endpoints and encrypt the media
stream during meetings.
Configure settings for securing calls as described in the procedure below. You can have up to three
remote encrypted participants in a videoconference.
Important:
Using encryption is subject to local regulation. In some countries it is restricted or limited for
usage. For more information, consult your local reseller.
Before you begin
If configuring from the endpoint, you must first enable advanced configuration, as described in
Enabling Advanced Maintenance on the XT Series
To encrypt SIP calls using SRTP, you must also secure communication between your video network
devices using TLS certificates and enable encryption (see
Using TLS on page 160). If TLS is not enabled, only SIP calls to other XT Series endpoints are
encrypted, using a proprietary encryption protocol.
Procedure
1. Access the security settings. From the XT Series web interface, select Administrator
Settings > Calls > Encryption. From the endpoint's main menu, select Configure >
Advanced > Calls > Encryption.
April 2015
Securing Connections to the XT Series Using TLS
on page 169.
on page 160
on page 112.
Avaya Scopia
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Securing Connections to the XT Series
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XT Series Deployment Guide
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