Configuring SBC For Lawful Interception

Overview

The SBC Core platforms support Lawful Intercept (LI) functionality using one of the following solutions:

• Centralized PSX solution consisting of an external PSX, a third-party Intercept Server (IS), and EMS
• SBC ERE solution consisting of the ERE, a third-party Intercept Server and EMA

The SBC works in conjunction with the Intercept Server as well as the ERE and EMA (or an external PSX and EMS) to provide call data and call content to law enforcement agencies for calls involving identified intercept subjects. When it receives matching LI criteria in a policy response from the ERE (or PSX), the SBC routes the call as directed and additionally reports call events to the Intercept Server. It also sends media stream (call content) to an IP address provided by the Intercept Server.

The SBC supports four types of LI:

• Default LI
• IMS LI
• PCSI LI
• PacketCable 2.0 LI
  
  
  

The following table describes the Call Data Channel (CDC) configuration information required to distinguish between Default LI, IMS LI, and PCSI (P-Com.Session-Info) LI, and PacketCable 2.0 LI. It also lists the types of LI supported on different platforms:

User "calea" must be created on SBC before attempting LI provisioning.

Creating the CALEA user

1. Log on as admin user.
    

2. Create a CALEA user, by executing the following command:

   % set oam localAuth user calea group Calea
   commit

   
   You will see a system-generated password. Use this password when you log on to CALEA user for the first time.

Creating Call Data Channel (CDC)

Execute the following command to create a CDC:

% set addressContext default intercept callDataChannel CDC
commit

View the CALEA user status

View the CALEA user status, by executing the following command:

> show status oam localAuth userStatus
userStatus admin {
    currentStatus Enabled;
    userId        3000;
}
userStatus calea {
    currentStatus Enabled;
    userId        3329;
}
[ok]