Creating and Activating LI Configuration for M-SBC

The EMS uses the EMS Calea user role for all LI configuration operations and the admin user for communicating over netconf to the SBC. The EMS creates the SBC Calea user credentials automatically when an SBC registers to the EMS. Distributed SBC instances are registered dynamically in the EMS.

To configure the M-SBC LI through the CLI, refer to the following pages:

• Configuring M-SBC for Default LI using CLI
• Configuring M-SBC for IMS LI using CLI
• Configuring M-SBC for PCSI LI using CLI
• Configuring SBC For Lawful Interception

Prerequisites

To configure the CDC for an M-SBC instance:

• Instantiate an EMS SWe instance with LI interface support using an appropriate Heat template. For more information, refer to EMS Standalone Instantiation for Geographical Redundancy (GR) Deployment.
• 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.

Configuring CDC using the EMS Calea User Account

For LI, CDC configuration is performed using the CDC Configuration Manager through the EMS. You can create CDC information only when logged in as the EMS Calea user from the EMS CDC configuration window.

Configure Cluster CDC for M-SBC Nodes

To configure a cluster CDC for M-SBC nodes:

1. Log into EMS as an admin user.

2. Click Network > Cluster Management. The Cluster Management / Manage VNFs window opens listing the SBC clusters created on the EMS.

   EMS Cluster/VNF List

   

3. 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. 

4. Click the Configurations tab. 

   Cluster Configurations Tab

   

5. Click Edit Configuration. The SBC Configuration Manager opens in a separate window against the cluster's active OAM node.
6. Launch another EMS session as the Calea user.
7. Under Monitoring, click Lawful Intercept. The Lawful Intercept window is displayed.

8. Click Cluster CDC. The Lawful Intercept/Cluster CDC window is displayed.

   Lawful Intercept/Cluster CDC

   

9. Select the M-SBC cluster.

10. Click Launch CDC Configuration Manager. The SBC Configuration Manager window is displayed.

Creating a Call Data Channel for the M-SBC (Default, IMS, and PCSI LI)

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 call data channel:

1. Perform the Configure Cluster CDC for M-SBC Nodes procedure.

2. In the SBC Configuration Manager window of the Calea user, navigate to Configuration > Intercept > Call Data Channel. The Call Data Channel window is displayed.

   Call Data Channel Window

   

3. Select default from the Address Context drop-down menu. You can configure LI using the default Address Context only.

4. Click New Call Data Channel. The Create New Call Data Channel window is displayed.

5. Configure the Create New Call Data Channel panel for either the default, IMS, or PCSI LI. For descriptions of the parameters in the following tables, refer to Intercept - Call Data Channel.

   • To configure the CDC for the default LI, use the following table.

     Note

     You cannot create or modify mediation servers for an M-SBC with a default LI. Since you cannot create mediation servers, you cannot configure the media TCP or media UDP for a default LI.

     For M-SBCs with a default LI, you can configure only the CDC. In the CDC configuration, you provide the IP Address and Port details.

     Call Data Channel Parameters - Default LI

     Parameter	Configuration
     Name	Enter the name of the CDC configuration object.
     Intercept Standard	Select one of the following options: Packetcable or Packetcable Plus Etsi.
     Vendor Id	Select one of the following options: None, Utimaco, or Verint.
     Pri State	Select Enabled.
     Sec State	Select Enabled.
     Pri Mode	Select Active.
     Sec Mode	Select Active.
     Pri IP Address	Enter the primary LI server's IP address where the SBC sends the CDC messages.
     Sec IP Address	Enter the secondary LI server's IP address where the SBC sends the CDC messages.
     Pri Port	Enter the primary LI server's UDP port where the SBC sends the CDC messages.
     KA Timer	Enter the KA timer.
     Retries	Enter the number of retries before the SBC considers the LI CDC as failed.

     See the following screen capture for an example configuration.

     Create new Call Data Channel - Default LI

     

   • To configure the CDC for the IMS LI, use the following table.

     Call Data Channel Parameters - IMS LI

     Parameter	Configuration
     Name	Enter the name of the CDC configuration object.
     Intercept Standard	Select one of the following options: Three Gpp or Etsi.
     Vendor Id	Select one of the following options: None, Verint, Utimaco, or Group Two Thousand.
     Li Pol Dip For Regd Ood Msg	Enable or disable the Li Pol Dip For Regd Ood Msg.
     Rtcp Interception	Enable or disable the RTCP interception.
     Media IP Interface Group Name	Select the name of the IP interface group you want to use.
     Dsr Protocol Version	Enter the DSR protocol version.

     See the following screen capture for an example configuration.

     Create new Call Data Channel - IMS LI

     

   • To configure the CDC for the PCSI LI, use the following table.

     Call Data Channel Parameters - PCSI LI

     Parameter	Description
     Name	Enter a name for the CDC configuration object.
     Intercept Standard	Select Packetcable.
     Vendor Id	Select Ss8.
     RTCP Interception	Select Enabled.
     Media IP Interface Group Name	Select the name of the media IP interface group you want to use.

     See the following screen capture for an example configuration.

     Create new Call Data Channel - PCSI LI

     

6. Click Save. 

7. Click OK.

8. Click Close at the top-right of the SBC Configuration Manager window.

9. Click Yes to confirm that you want to close the window.

10. Return to the EMS session containing the SBC Configuration Manager for the OAM node and click Apply Saved Changes and Close.

11. When prompted, confirm that you want to save and activate your configuration changes.
    

Creating Mediation Servers

After the call data channel is created, you must create mediation server objects associated with the call data channel. The CDC configuration supports up to eight mediation servers.

To create a mediation server object:

1. Perform the Configure Cluster CDC for M-SBC Nodes procedure.

2. In the SBC Configuration Manager window of the Calea user, navigate to Configuration > Intercept > Call Data Channel > Mediation Server. The Mediation Server window is displayed.

   Mediation Server

   

3. Select default from the Address Context drop-down menu.

4. Select the Call Data Channel you created for the M-SBC from the drop-down menu.

5. Click New Mediation Server. The Create New Mediation Server window is displayed.

6. Type a mediation server name in Msname.

   Creating new Mediation Server

   

7. Click Save.

8. Click Ok. The object is created successfully.

   Note

   You can repeat the preceding steps to create a maximum of eight mediation servers for the M-SBC.

9. Click Close at the top-right of the SBC Configuration Manager window.

10. Click Yes to confirm that you want to close the window.

11. Return to the EMS session containing the SBC Configuration Manager for the OAM node and click Apply Saved Changes and Close.

12. When prompted, confirm that you want to save and activate your configuration changes.
    

Mediation Server - Media - TCP

This screen includes the LI Mediation Server TCP Media intercept parameters.

To view TCP parameters:

1. Perform the Configure Cluster CDC for M-SBC Nodes procedure.

2. In the SBC Configuration Manager window of the Calea user, navigate to Configuration > Intercept > Call Data Channel > Mediation Server > Media.

3. Click TCP. The TCP window is displayed.

   TCP

   

4. Select default from the Address Context drop-down menu.

5. Select the Call Data Channel from the drop down menu.

6. Select the Mediation Server from the drop-down menu. The configuration for the selected server opens.

7. Use the following table to configure the server parameters. For more information, refer to Media - TCP.

   Note

   The mediation server parameters can only be updated when its State is Disabled and Mode is Out Of Service.

   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 options are: In Service Out of service (default)
   State	Specifies the state of the TCP connection towards the mediation server for media interception. The 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.

   See the following screen capture for an example configuration.

   Edit TCP - Out of Service

   

8. Click Save.
9. Click OK.

10. Enable the mediation server by changing its State to Enabled and Mode to In Service.

    Edit TCP - In Service

    

11. Click Save to save the configuration.

12. Click Ok.

13. Click Close at the top-right of the SBC Configuration Manager window.
    

14. Click Yes to confirm that you want to close the window.

15. Return to the EMS session containing the SBC Configuration Manager for the OAM node and then click Apply Saved Changes and Close.

16. When prompted, confirm that you want to save and activate your configuration changes.
    

Mediation Server - Media - UDP

Use the following procedure to configure the media UDP.

1. Perform the Configure Cluster CDC for M-SBC Nodes procedure.
2. In the SBC Configuration Manager window of the Calea user, select Configuration > Intercept > Call Data Channel > Mediation Server > Media.

3. Click UDP.

   UDP

   

4. Select default from the Address Context drop-down menu.

5. Select the CDC you created for the M-SBC from the Call Data Channel drop-down menu.

6. Select the mediation server you created for the M-SBC from the Mediation Server drop-down menu.

7. Use the following table to configure the Edit UDP panel. For descriptions of the parameters in this table, refer to Media - UDP.

   Note

   You can update the mediation server parameters only when the State is Disabled and Mode is Out Of Service.

   UDP Parameters

   Parameter	Configuration
   IP Address V4 or V6	Enter the IPv4 or IPv6 address of the mediation server for the media interception over UDP.
   Port Number	Enter the port number of the mediation server for the media interception over UDP.
   DSCP Value	Enter the DSCP value of the intercepted media packets sent on the UDP port.
   Mode	Select Out of Service.
   State	Select Disabled.

   See the following screen capture for an example configuration.

   Edit UDP - Out of Service

   

8. Click Save.
9. Click Ok.
10. Configure the Edit UDP panel with the following values to enable the mediation server:
    1. Mode: Select In Service.
    2. State: Select Enabled.

    Edit UDP - In Service

    

11. Click Save.

12. Click Ok.

13. Click Close at the top-right of the SBC Configuration Manager window.
    

14. Click Yes to confirm that you want to close the window.

15. Return to the EMS session containing the SBC Configuration Manager for the OAM node and then click Apply Saved Changes and Close.

16. When prompted, confirm that you want to save and activate your configuration changes.
    

Viewing Statistics for M-SBC 

To view mediation server media statistics:

1. Log onto the EMS as the Calea user.
2. Under Monitoring, click Lawful Intercept. The Lawful Intercept window is displayed.

3. Click Cluster CDC. The Lawful Intercept/Cluster CDC window is displayed.

4. Select the M-SBC cluster.

5. Click View Nodes. The nodes list in the cluster is displayed.

   View Nodes

   

6. Select the node to view the mediation server media status and click Launch Node LI Stats. The Mediation Server Media Status window is displayed.

   Mediation Server Media Status