CHAPTER
43-1
Cisco ASA 5500 Series Configuration Guide using ASDM
OL-20339-01
43
Configuring the Cisco Phone Proxy
This chapter describes how to configure the adaptive security appliance for Cisco Phone Proxy feature.
This chapter includes the following sections:
• Information About the Cisco Phone Proxy, page 43-1
• Licensing Requirements for the Phone Proxy, page 43-4
• Prerequisites for the Phone Proxy, page 43-5
• Phone Proxy Guidelines and Limitations, page 43-11
• Configuring the Phone Proxy, page 43-13
• Feature History for the Phone Proxy, page 43-21
Information About the Cisco Phone Proxy
The Cisco Phone Proxy on the adaptive security appliance bridges IP telephony between the corporate
IP telephony network and the Internet in a secure manner by forcing data from remote phones on an
untrusted network to be encrypted.
Phone Proxy Functionality
Telecommuters can connect their IP phones to the corporate IP telephony network over the Internet
securely via the phone proxy without the need to connect over a VPN tunnel as illustrated by
Figure 43-1.
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