Cisco 7961G Administration Guide

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Cisco IP Phone Administration Guide for Cisco CallManager, Cisco IP Phone 7961G/7961G-GE and 7941G/7941G-GE
OL-6966-01
Chapter 1 An Overview of the Cisco IP Phone
Understanding Security Features for Cisco IP Phones
Understanding Security Features for Cisco IP Phones
Implementing security in the Cisco CallManager system prevents identity theft of
the phone and Cisco CallManager server, prevents data tampering, and prevents
call signaling and media stream tampering.
To alleviate these threats, the Cisco IP telephony network establishes and
maintains authenticated and encrypted communication streams between a phone
and the server, digitally signs files before they are transferred to a phone, and
encrypts media streams and call signaling between Cisco IP phones.
Table 1-2 shows where you can find additional information about security in this
and other documents.
Table 1-2 Cisco IP Phone and Cisco CallManager Security Topics
Topic Reference
Detailed explanation of security, including set up,
configuration, and troubleshooting information
for Cisco CallManager and Cisco IP Phones
Refer to Cisco CallManager Security Guide
Security features supported on the Cisco IP Phone See the “Overview of Supported Security
Features” section on page 1-12
Restrictions regarding security features See the “Security Restrictions” section on
page 1-15
Identifying phone calls for which security is
implemented
See the “Identifying Encrypted and Authenticated
Phone Calls” section on page 1-15
TLS connection
• See the “What Networking Protocols are
Used?” section on page 1-5
• See the “Adding Phones to the
Cisco CallManager Database” section on
page 2-11
Security and the phone startup process See the “Understanding the Phone Startup
Process” section on page 2-9
Security and phone configuration files See the “Adding Phones to the Cisco CallManager
Database” section on page 2-11
Changing the TFTP Server 1 or TFTP Server 2
option on the phone when security is implemented
See Table 4-2, in the “Network Configuration
Menu” section on page 4-6

Cisco 7961G Specifications

General

Brand	Cisco
Model	7961G
Category	IP Phone
Language	English