Cisco Cisco Expressway
Setting the Cluster Security Mode to Mixed Mode
The Cisco Unified Communications Manager cluster must be in Mixed Mode to allow the registration of both
secure devices and non-secure devices. This allows for best effort encryption between the Expressway and
the Cisco Unified Communications Manager. Read
secure devices and non-secure devices. This allows for best effort encryption between the Expressway and
the Cisco Unified Communications Manager. Read
background on best effort encryption between Expressway and Unified CM.
As of version 10.0, you can use the CLI to change the cluster security mode. On earlier versions, you must
use the Cisco CTL Client plugin to change the cluster security mode. The security mode change updates the
CTL file, so you must restart the Cisco CallManager and Cisco Tftp services after the change.
use the Cisco CTL Client plugin to change the cluster security mode. The security mode change updates the
CTL file, so you must restart the Cisco CallManager and Cisco Tftp services after the change.
The process is summarized below, but you should refer to the Cisco Unified Communications Manager
Security Guide for your version, which you can find on the
Security Guide for your version, which you can find on the
1. Obtain access to the Unified CM publisher node, including hardware security tokens (if using the
CTL Client plugin).
2. (Pre 10.0) Download and install the Cisco CTL Client plugin from Unified CM.
3. Run the CTL Client plugin to enable Mixed Mode. On 10.0 or later, you can use utils ctl set-
cluster mixed-mode
at the CLI.
4. Update the CTL file (via the plugin or utils ctl update CTLFile).
5. Restart the Cisco CallManager and Cisco Tftp services (via Cisco Unified Serviceability).
Configuring a SIP Trunk Security Profile on Unified CM
On Unified CM:
1. Select
Cisco Unified CM Administration
, click Go and log in.
2. Go to
System > Security > SIP Trunk Security Profile
.
Cisco Unified Communications Manager with Cisco Expressway (SIP Trunk) Deployment Guide (X8.6)
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Connecting Expressway to Unified CM Using TLS