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In this section:
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Related articles:
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The EMS uses
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the EMS CALEA
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user role for all LI
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configuration operations and the admin user for communicating over netconf to the SBC. The EMS creates the SBC CALEA user credentials automatically when
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an SBC registers to
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the EMS.
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Distributed SBC instances are registered dynamically in the EMS.
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A single Call Data Channel (CDC) configuration is supported per cluster. |
Prerequisites
To
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configure the CDC for
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an M-SBC instance:
- Instantiate an EMS SWe instance with LI interface support using
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- an appropriate Heat template. For more information,
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- refer to EMS
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M-SBC Basic Configuration
To create basic configuration for M-SBC:
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Under Network Mgmnt, click Cluster / VNF Management. The Cluster/VNF Management window is displayed.
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Create M-SBC cluster. For more information, see Creating an SBC SWe Cluster.
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Click Configurations tab.
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Click New Configuration. The New Configuration pane is displayed.
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Select the version of the configuration from the Version drop-down.
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Select an SBC Configurator instance from the Master Configurator drop-down.
This node is used to create the configuration. The SBC Configurator nodes are displayed based on the version selected. Only unlocked SBC Configurator nodes are listed.
Enter a name for the configuration in the Configuration Name field. The SBC configuration name can contain only letters, numbers, dashes (-), apostrophes ('), underscores (_), colons (:) and spaces.
- Ensure that basic M-SBC configuration is completed as in M-SBC Cluster Configuration using SBC Configuration Manager.
- Enable the EMS CALEA user. For information, refer to Enabling Lawful Intercept on EMS Standalone.
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The cluster ID is set as the default name for the first configuration. You can modify the name. The name must be unique. The subsequent configurations are named with a combination of cluster name and some unique identifying information. The default name varies based on how the configuration is created. |
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Click Create. A circular progress bar is displayed against the Master Configurator node. It takes around six minutes to load master configuration.
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When the Master Configurator node is loaded, the Open Editor button is displayed next to the Master Configurator node.
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Click Open Editor. The SBC Configuration Manager window is displayed.
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Click Apply Saved Changes and Close. A circular progress bar is displayed.
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The configuration is saved on EMS SWe and the following window is displayed:
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Configuring CDC using
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the EMS CALEA User Account
For LI,
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CDC configuration is performed using the CDC Configuration Manager through the EMS.
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You can
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create CDC information only
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when logged in as the EMS CALEA user from the EMS CDC configuration window.
Prerequisites
Enable calea user. For information, see Enabling Lawful Intercept on EMS Standalone.
Procedure
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Configure Cluster CDC for M-SBC Nodes
To configure a cluster CDC for M-SBC nodes:
- Log into EMS as an admin user.
Click Network > Cluster Management. The Cluster Management / Manage VNFs window opens listing the SBC clusters created on the EMS
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.
Caption 0 Figure 1
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EMS Cluster/VNF List 
- Click the radio button adjacent to the name of the cluster you want to configure. The Details tab for the selected cluster opens by default.
Click the Configurations tab.
Caption 0
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Figure 1 Cluster
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Configurations Tab
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- Launch another EMS session as the CALEA user.
- Under Monitoring, click Lawful Intercept. The Lawful Intercept window is displayed.
Click Cluster CDC. The Lawful Intercept/Cluster CDC window is displayed.
Caption 0 Figure 1 Lawful Intercept/Cluster CDC 
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- Select the M-SBC cluster
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- .
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Click Launch CDC Configuration Manager. The SBC Configuration Manager window is displayed.
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Create a call data channel for the M-SBC
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as described in the following procedure.
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The SBC SWe provides the ability to configure the IP address, TCP port, and other parameters used for communication towards the mediation server.
To create a new
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call data channel:
In the SBC Configuration Manager window, navigate to
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Configuration > Intercept > Call Data Channel. The Call Data Channel window is displayed.
Caption 0 Figure 1 Call Data Channel Window
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Select default from the Address Context drop-down menu. You can configure LI using the default Address Context only.
Caption 0 Figure 1 Call Data Channel for M-SBC
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Click New Call Data Channel. The Create New Call Data Channel window is displayed
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- Specify the following values:
Name: Type the name of the call data channel.
Intercept Standard:
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Select packetcable
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from the drop-down menu.
Vendor ID: Select
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ss8 from the drop-down menu.
- RTCP Interception:
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- Select Enabled.
Media IP Interface
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Group Name: Select the name of the media IP interface group
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you want to use from the drop-down menu.
Caption 0 Figure 1 Creating New Call Data Channel
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Caption 0
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Table 1 Creating New Call Data Channel Parameters
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Parameter Description Name Specifies the name of the CDC configuration object. Intercept Standard Specifies the intercept standard
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to use. Vendor Id Specifies the vendor of the LI server
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. RTCP Interception Specifies whether to intercept RTCP data. The values are: - Disabled (default)
- Enabled
Media IP interface Group Name Select a Media IP interface Group Name.
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Click Save.
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Click OK.
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Click OK.
Click Close at the top-right of the SBC Configuration Manager window.
Creating Mediation Servers
After the call data channel is created, you must create
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mediation server objects associated with the
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call data channel. The CDC configuration supports
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up to eight
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mediation
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servers.
To create a mediation server object:
Navigate
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to Configuration
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> Intercept
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> Call Data Channel
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> Mediation Server. The Mediation Server window is displayed.
Caption 0 Figure 1 Mediation Server
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Select default
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from the Address Context
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drop-down menu.
Select
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the Call Data Channel you created for the M-SBC from the drop-down menu.
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Click New Mediation Server. The Create New Mediation Server window is displayed.
Type
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a mediation server name
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in Msname.
Caption 0 Figure 1 Creating New Mediation Server
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Click Save. The
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object is created successfully.
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You can repeat the steps to create up to eight mediation servers for the M-SBC.
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Mediation Server - Media - TCP
This
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screen includes the LI Mediation Server TCP Media intercept parameters.
To view TCP parameters:
Navigate
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to Configuration > Intercept > Call Data Channel
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> Mediation Server
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> Media
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> TCP. The TCP window is displayed.
Caption 0 Figure 1 TCP 
Select default from the Address Context drop-down menu.
Select the Call Data Channel from the drop down menu.
Select the Mediation Server from the drop-down menu. The configuration for the selected server opens.
Caption 0 Figure 1 Editing TCP
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- Out of Service 
Use the following table to configure the server parameters.
Info title Note: The mediation server parameters can only be updated when its State is Disabled and Mode is Out Of Service.
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Caption 0 Table 1 TCP Parameters Parameter Description IP Address V4 or V6 IPV4/IPV6 address of the mediation server for media interception over TCP.
Port Number Specifies the port number of the mediation server for media interception over TCP. Range is 0 - 65535. DSCP Value Specifies the DSCP value for intercepted media packets sent on TCP port. Default value is 16 and range is 0 - 63. Mode Specifies the mode of the TCP connection towards the mediation server for media interception. The
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options are:
- In Service
- Out of service (default)
State Specifies the state of the TCP connection towards the mediation server for media interception. The
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options are:
- Disabled (default)
- Enabled
KA Time Specifies the duration between two keep alive transmissions while in idle condition. The default value is 180. KA Interval Specifies the duration between two successive keep alive re-transmissions, if acknowledgement to the previous keep alive transmission is not received. The default value is 30. KA Probe Specifies the number of re-transmissions to be carried out before declaring that the remote end is not available. The default value is 4.
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Select default from the Address Context drop-down menu.
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Select the Call Data Channel from the drop down menu.
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Select the Mediation Server from the drop-down menu.
Configure the required details.
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The configurations can only be updated with State as Disabled and Mode as Out Of Service. |
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- Click Save.
- Click
- OK.
- Enable the mediation server
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- by changing its State to Enabled and Mode to In Service.
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| 1 | Editing TCP - In Service |
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To activate a cluster configuration for SBC SWe:
- Log on to EMS as
adminuser. - Under Network Mgmnt, click Cluster / VNF Management. The Cluster/VNF Management window is displayed.
Select the M-SBC cluster for which the CDC configuration is created.
Click Configuration tab. The Configuration pane is displayed.
Caption 0 Figure 1 Configuration Pane 3 Configuration Pane - In Configuration Role column, select the configuration role to activate.
Click Activate Configuration. The Activation in progress status is displayed. When the activation is completed, the nodes in the cluster are updated with the active configuration, the Configuration Status is displayed as Last update complete.
Caption 0 Figure 1 Activation Completed - Instantiate M-SBC. For more information, see Instantiating M-SBC Instance.
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Instantiate M-SBC instance by changing SBC Personality Type as msbc for applying the LI configuration. For more information, see Instantiating Standalone Media SBC.
Partial Configuration for M-SBC
After activating the default configuration, if there is an update to the active configuration, the candidate configuration must be activated. For more information, see Partial Configuration on M-SBC.
- Click Save to save the configuration.
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Click Apply Saved Changes and Close.
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Activate the CDC configuration. For more information, see Activating CDC Configuration for M-SBC.
Return to theEMS session containing the SBC Configuration Manager for the OAM node and then click Apply Saved Changes and Close.
When prompted, confirm that you want to save and activate your configuration changes.
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SBC
To view mediation server media statistics
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:
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- Log onto the EMS as the CALEA user.
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- Under Monitoring, click
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- Lawful Intercept.
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- The Lawful Intercept
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- window is displayed.
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Click Cluster CDC
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. The Lawful Intercept/Cluster CDC
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window is displayed.
- Select the M-SBC cluster.
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Click View Nodes. The nodes list in the cluster is displayed.
Caption 0 Figure 1 View Nodes
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Select the
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node to view the mediation server media status
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and click Launch Node LI Stats.
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The Mediation Server Media
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Status window is displayed.
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Caption 0 Figure 1 Mediation Server Media Status
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