McDewey

Preface Implementing security mechanisms in the Cisco Unified Communications Manager system prevents identity theft of the phones and the Unified Communications Manager server, data tampering, and call-signaling/media-stream tampering. The CiscoIP telephony network establishes and maintains authenticated communication streams, digitally signs files before transferring the file to the phone, and encrypts media streams and call signaling between Cisco Unified IP Phones. • About this Manual, on page xv • Audience, on page xvii • Document Conventions, on page xviii • Legal Compliance, on page xviii About this Manual The Security Guide includes the following Parts with short Descriptions: Table 1: Parts and Descriptions Description Part Provides information on following topics about security overview. • System Requirements • Common Icons • Best Practices It also provides an overview to configure Security in your systems. An Introduction to CUCM Security Security Guide for Cisco Unified Communications Manager, Release 15 and SUs xv