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Chapter 1
An Overview of the Cisco Unified IP Phone
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Security Restrictions
A user cannot barge into an encrypted call if the phone that is used to barge is not configured for
encryption. When barge fails in this case, a reorder tone (fast busy tone) plays on the phone on which
the user initiated the barge.
If the initiator phone is configured for encryption, the barge initiator can barge into an authenticated or
nonsecure call from the encrypted phone. After the barge occurs, Cisco Unified Communications
Manager classifies the call as nonsecure.
If the initiator phone is configured for encryption, the barge initiator can barge into an encrypted call,
and the phone indicates that the call is encrypted.
A user can barge into an authenticated call, even if the phone that is used to barge is nonsecure. The
authentication icon continues to appear on the authenticated devices in the call, even if the initiator
phone does not support security.
Overview of Configuring and Installing Cisco Unified IP Phones
When deploying a new IP telephony system, system administrators and network administrators must
complete several initial configuration tasks to prepare the network for IP telephony service. For
information and a checklist for setting up and configuring a complete Cisco IP telephony network, refer
to the "System Configuration Overview" chapter in Cisco Unified Communications Manager System
Guide.
After you have set up the IP telephony system and configured system-wide features in Cisco Unified
Communications Manager, you can add IP phones to the system.
The following topics provide an overview of procedures for adding Cisco Unified IP Phones to your
network:
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OL-15483-01
http://www.cisco.com/en/US/products/hw/switches/ps708/tsd_products_support_series_home.
html
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Disabled—If the switch does not support multiple 802.1X-compliant devices on the same port,
you should disable the PC Port when 802.1X authentication is enabled. See the
Configuration Menu" section on page 4-22
and subsequently attempt to attach a PC to it, the switch will deny network access to both the
phone and the PC.
Configure Voice VLAN—Because the 802.1X standard does not account for VLANs, you should
configure this setting based on the switch support.
Enabled—If you are using a switch that supports multi-domain authentication, you can continue
–
to use the voice VLAN.
Disabled—If the switch does not support multi-domain authentication, disable the Voice VLAN
–
and consider assigning the port to the native VLAN. See the
section on page 4-22
for more information.
Enter MD5 Shared Secret—If you disable 802.1X authentication or perform a factory reset on the
phone, the previously configured MD5 shared secret is deleted. See the
Status" section on page 4-30
Configuring Cisco Unified IP Phones in Cisco Unified Communications Manager, page 1-18
Installing Cisco Unified IP Phones, page 1-21
Cisco Unified IP Phone 7962G and 7942G Administration Guide for Cisco Unified Communications Manager 7.0
Overview of Configuring and Installing Cisco Unified IP Phones
for more information. If you do not disable this port
for more information.
"Security
"Security Configuration Menu"
"802.1X Authentication and
1-17
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Table of Contents
Troubleshooting
