Cisco ASA 5505 - Manual (Page 1005)

48-23
Cisco ASA 5500 Series Configuration Guide using the CLI
Chapter 48 Configuring the Cisco Phone Proxy
Configuring the Phone Proxy
The media termination address you configure must meet the requirements as described in Media
Termination Instance Prerequisites, page 48-6 .
What To Do Next
Once you have created the media termination instance, create the phone proxy instance. See Creating the
Phone Proxy Instance, page 48-23 .
Creating the Phone Proxy Instance
Create the phone proxy instance.
Prerequisites
You must have already created the CTL file and TLS proxy instance for the phone proxy.
See Creating the CTL File, page 48-18 and Creating the TLS Proxy Instance for a Non-secure Cisco
UCM Cluster, page 48-20
Command Purpose
Step 1 hostname(config)# media-termination instance_name
Example:
hostname(config)# media-termination mediaterm1
Creates the media termination instance that you
attach to the phone proxy.
Step 2 hostname(config-media-termination)# address
ip_address [interface intf_name]
Examples:
hostname(config-media-termination)# address
192.0.2.25 interface inside
hostname(config-media-termination)# address
10.10.0.25 interface outside
Configures the media-termination address used by
the media termination instance. The phone proxy
uses this address for SRTP and RTP.
For the media termination instance, you can
configure a global media-termination address for all
interfaces or configure a media-termination address
for different interfaces. However, you cannot use a
global media-termination address and
media-termination addresses configured for each
interface at the same time.
If you configure a media termination address for
multiple interfaces, you must configure an address
on each interface that the ASA uses when
communicating with IP phones.
The IP addresses are publicly routable addresses that
are unused IP addresses within the address range on
that interface.
See Media Termination Instance Prerequisites,
page 48-6 for the complete list of prerequisites that
you must follow when creating the media
termination instance and configuring the media
termination addresses.
Step 3 (Optional)
hostname(config-media-termination)# rtp-min-port
port1 rtp-max-port port2
Example:
hostname(config-media-termination)# rtp-min-port
2001 rtp-maxport 32770
Specifies the minimum and maximum values for the
RTP port range for the media termination instance.
Where port1 and port2 can be a value from 1024 to
65535.