Interacting With Cisco Unified Communications Manager; Security For Voice Communications In Wlans; Authentication Methods - Cisco 8961 Administration Manual

Chapter 6 Understanding the VoIP Wireless Network

Interacting with Cisco Unified Communications Manager

Cisco Unified Communications Manager is the call control component in the network that handles and
routes calls for the wireless IP Phones. Cisco Unified Communications Manager manages the
components of the IP telephony system—the phones, access gateways, and the resources—for such
features as call conferencing and route planning. When deploying a Cisco Unified IP Phone on a wireless
LAN, you must use Cisco Unified Communications Manager Release 7.1(3) or later and the SIP
protocol.
Before Cisco Unified Communications Manager can recognize a phone, the phone must register with
Cisco Unified Communications Manager and be configured in the database. For information about
setting up phones in Cisco Unified Communications Manager, see the
Phones in Cisco Unified Communications Manager" section on page
You can find more information about configuring Cisco Unified Communications Manager to work with
the IP Phones and IP devices in the Cisco Unified Communications Manager Administration Guide and
Cisco Unified Communications Manager System Guide.
Related Topics
Configuring Cisco Unified IP Phones in Cisco Unified Communications Manager, page 1-24

Security for Voice Communications in WLANs

Because all WLAN devices that are within range can receive all other WLAN traffic, securing voice
communications is critical in WLANs. To ensure that voice traffic is not manipulated or intercepted by
intruders, the Cisco Unified IP Phone and Cisco Aironet APs are supported in the Cisco SAFE Security
architecture. For more information about security in networks, see
http://www.cisco.com/en/US/netsol/ns744/networking_solutions_program_home.html.
This section contains the following items:
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Authentication Methods

The Cisco Wireless IP telephony solution provides wireless network security that prevents unauthorized
sign-ins and compromised communications by using the following authentication methods supported by
the wireless Cisco Unified IP Phone 9971:
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Cisco Unified IP Phone 8961, 9951, and 9971 Administration Guide for Cisco Unified Communications Manager 8.6 (SIP)
Authentication Methods, page 6-11
Authenticated Key Management, page 6-12
Encryption Methods, page 6-13
Choosing AP Authentication and Encryption Methods, page 6-13
Open Authentication—Any wireless device can request authentication in an open system. The AP
that receives the request may grant authentication to any requestor or only to requestors on a list of
users. Communication between the wireless device and AP could be non-encrypted or devices can
use Wired Equivalent Privacy (WEP) keys to provide security. Devices that are using WEP only
attempt to authenticate with an AP that is using WEP.
Security for Voice Communications in WLANs
"Configuring Cisco Unified IP
1-24.
6-11