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Cisco ASA 5500 Series Configuration Guide using ASDM
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Chapter 42 Using the Cisco Unified Communication Wizard
Configuring the UC-IME by using the Unified Communication Wizard
Configuring the Private Network Settings for the Cisco Intercompany Media
Engine Proxy
When configuring the Cisco Intercompany Media Engine Proxy, you specify settings to define the
private network topology, such the private network interface, the IP addresses of the Cisco Unified
Communications servers, and ticket verification. Additionally, when the Cisco Unified Communications
servers are operating in secure mode, you specify the X.509 subject name for the Cisco Intercompany
Media Engine Proxy,
The values that you specify in this page generate the following configuration settings for the Cisco
Intercompany Media Engine Proxy:
• The list of Cisco Unified Communications servers
• The ticket epoch and password used by the Cisco Intercompany Media Engine Proxy
• For an off-path deployment only, the mapping service on the same interface as the Cisco Unified
Communications server
Step 1 To configure the Cisco Intercompany Media Engine Proxy as part of a basic deployment, select the
interface that connects to the local Cisco Unified Communications servers.
Or
To configure the Cisco Intercompany Media Engine Proxy as part of an off-path deployment, complete
the following steps:
a. From the Listening Interface drop-down list, choose the interface on which the adaptive security
appliance listens for the mapping requests.
b. In the Port field, enter a number between 1024 and 65535 as the TCP port on which the adaptive
security appliance listens for the mapping requests. The port number must be 1024 or higher to avoid
conflicts with other services on the device, such as Telnet or SSH. By default, the port number is
TCP 8060.
c. From the UC-IME Interface drop-down list, choose the interface that the adaptive security appliance
uses to connect to the remote adaptive security appliance that is enabled with the Cisco
Intercompany Media Engine Proxy.
Note In a basic and an off-path deployment, all Cisco Unified Communications servers must be on the same
interface.
Step 2 In the Unified CM Servers area, the wizard displays the private IP address, public IP address, and
security mode of any Cisco Unified Communications server configured on the adaptive security
appliance. If necessary, click Add to add a Cisco Unified Communications server. You must include an
entry for each Cisco UCM in the cluster with Cisco Intercompany Media Engine that has a SIP trunk
enabled.
Step 3 In the Ticket Epoch field, enter a integer from 1-255.
The epoch indicates the number of times that password has changed. When the proxy is configured the
first time and a password entered for the first time, enter 1 for the epoch integer. Each time you change
the password, increment the epoch to indicate the new password. You must increment the epoch value
each time your change the password. Typically, you increment the epoch sequentially; however, the
security appliance allows you to choose any value when you update the epoch.
If you change the epoch value, the current password is invalidated and you must enter a new password.
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