Versions Compared

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

Anchor
Configure the CDC
Configure the CDC
Configuring the

Call Data Channel

To configure Call Data Channel (CDC):

AnchorConfiguring the Node NumberConfiguring the Node NumberConfiguring the Node Number

IMS LI

This section outlines how to configure the node number and IPsec for the IMS LI.

For information about configuring the IMS LI on the S-SBC, M-SBC, or I-SBC, refer to the following pages:

Configuring the Node Number

As the Calea user, use the following command to configure the LI.As user ''Calea'', use the following commands to configure LI:

Code Block
languagenone
set addressContext default intercept nodeNumber 7788

Include Page
CDC_Configured_through_EMS
CDC_Configured_through_EMS

AnchorConfiguring CDC for Intercept Flavor as IMS LIConfiguring CDC for Intercept Flavor as IMS LICreating CDC for Intercept Flavor as IMS LI

For other options of configuring the intercept flavor as IMS LI, refer to the section Configuring SBC For Lawful Interception.

Code Block
languagenone
set addressContext default intercept callDataChannel CDC interceptStandard etsi vendorId verint mediaIpInterfaceGroupName LIG1 ipInterfaceGroupName LIG1
commit
Info
titleNote

Mediation server’s ipInterfaceGroup must be different from other signaling ipInterface groups. This ensures that LI doesn't use signaling ipAddress to send intercepted traffic (media/signaling) towards Mediation Server.

Info
titleNote

The SBC allows configuration of a maximum of 16 mediation servers for IMS LI in the Call Data Channel (CDC). When a call is tapped, the SBC selects among the Delivery Function 2 (DF2) servers in a round-robin manner, and establishes persistent TCP connections with all configured mediation servers.

Each mediation server object contains the Signaling(X2) and Media (X3) IP addresses. The SBC allows configuration of multiple mediation servers with the same X2 IP address but a different X3 IP address.

For IMS LI, the SBC does not support any Active-Standby configuration for the X2 servers. It assumes that the DF2 servers are running in Active-Active mode, and in case of a failure, moves the IP address of the active DF2 server to the standby DF2 server.

The X2 and X3 servers operate independently. Even if the X2 servers are not reachable, the SBC sends X3 media if DF3 servers are available, and vice versa.

For more information, refer to Intercept - CLI.

The alarms sonusSbxImMediationServerX2MsgBufferFull and sonusSbxImMediationServerX2MsgBufferAvailable indicate the status of the DSR buffer. The alarms are raised depending on whether the DSR buffer is full, or available.

 

AnchorConfiguring CDC for Media Interception Over TCPConfiguring CDC for Media Interception Over TCPConfiguring CDC for Media Interception Over TCP
Code Block
languagenone
% set addressContext default intercept callDataChannel CDC mediationServer MS1 media tcp ipAddress 10.54.78.20 portNumber 65120 
% commit
% set addressContext default intercept callDataChannel CDC mediationServer MS1 media tcp state enabled mode inService
% commit 
AnchorConfiguring CDC for Media Interception Over UDPConfiguring CDC for Media Interception Over UDPConfiguring CDC for Media Interception Over UDP
Info
titleNote

The SBC supports IPsec for media interception over UDP.

Code Block
languagenone
% set addressContext default intercept callDataChannel CDC mediationServer MS1 media udp ipAddress 10.54.78.20 portNumber 65200
% commit
% set addressContext default intercept callDataChannel CDC mediationServer MS1 media udp state enabled mode inService
% commit 
AnchorConfiguring CDC for Signaling InterceptionConfiguring CDC for Signaling InterceptionConfiguring CDC for Signaling Interception
Code Block
languagenone
% set addressContext default intercept callDataChannel CDC mediationServer MS1 signaling ipAddress 10.54.78.20 portNumber 65300 protocolType tcp
% commit
% set addressContext default intercept callDataChannel CDC mediationServer MS1 signaling state enabled mode inService
% commit
Info
titleNote

The protocolType "udp" is not supported for Signaling interception.

AnchorConfiguring CDC for RTCP InterceptionConfiguring CDC for RTCP InterceptionConfiguring CDC for RTCP Interception
Code Block
languagenone
% set addressContext default intercept callDataChannel CDC rtcpInterception enabled
% commit
Info
titleNote

The rtcpInterception parameter is visible, when interceptStandard and vendorId is configured as IMS LI.

AnchorConfiguring CDC for "Li Pol Dip For Regd Ood Msg"Configuring CDC for "Li Pol Dip For Regd Ood Msg"Configuring CDC for "Li Pol Dip For Regd Ood Msg"

Configuring IPsec for Signaling and Media Interception

As the admin user

The parameter liPolDipForRegdOodMsg when enabled is used to indicate SBC to send policy request to PSX for registered Out-Of-Dialog requests(messages) to be intercepted. When this parameter is disabled, policy request is not sent to PSX for registered Out-Of-Dialog requests (messages).

Enable the support for Policy dip, for registered users out-of-dialog messages, to decide on interception, by executing the command

Code Block
languagenone
% set addressContext default intercept callDataChannel CDC liPolDipForRegdOodMsg enabled
% commit
Info
titleNote

The liPolDipForRegdOodMsg  parameter is visible, when interceptStandard and vendorId is configured as IMS LI.

AnchorConfiguring SBC Core IPsecConfiguring SBC Core IPsecConfiguring the SBC Core IPsec

As user ''Admin'', use the following commands to configure the IPsec:.

Info
titleNote
  •  This optional

    This configuration is

    needed if

    mandatory only when you must send the intercepted traffic over a secure connection

    is required

    between the

    Spacevars
    0product
    and the

    Mediation Server

    mediation server.

      

  • The SBC supports IPsec for media interception over UDP.
  • The SPD entry is required to must create the following entries:
    • localIdentity ipAddress – The SBC Interface Group interface group IP associated with the LI CDC.

    • remoteIdentity ipAddress – The Mediation Server mediation server IP configured in the LI CDC.

  • The Recommended recommended setting for LI IPsec mode is ' transport'.

Info
titleInfo

For more information on about IPsec configuration, refer to the sectionIP Security - CLI.

Code Block
### create and configure IKE and IPsec protection profiles
   
set profiles security ipsecProtectionProfile PRGGSX2_IPSEC_PROT_PROF saLifetimeTime 28800
set profiles security ipsecProtectionProfile PRGGSX2_IPSEC_PROT_PROF espAlgorithms integrity hmacSha1,hmacMd5
set profiles security ipsecProtectionProfile PRGGSX2_IPSEC_PROT_PROF espAlgorithms encryption aesCbc128,_3DesCbc
  
set profiles security ikeProtectionProfile PRGGSX2_IKE_PROT_PROF saLifetimeTime 28800
set profiles security ikeProtectionProfile PRGGSX2_IKE_PROT_PROF algorithms encryption aesCbc128,_3DesCbc
set profiles security ikeProtectionProfile PRGGSX2_IKE_PROT_PROF algorithms integrity hmacSha1,hmacMd5
set profiles security ikeProtectionProfile PRGGSX2_IKE_PROT_PROF dpdInterval noDpd
  
### create IKE peer
  
set addressContext default ipsec peer PRGGSX2 ipAddress 10.54.78.20 preSharedKey 00000000000000000000000000000000 localIdentity type ipV4Addr ipAddress 10.220.41.161
set addressContext default ipsec peer PRGGSX2 remoteIdentity type ipV4Addr ipAddress 10.54.78.20
set addressContext default ipsec peer PRGGSX2 protocol ikev1 protectionProfile PRGGSX2_IKE_PROT_PROF
  
### create an SPD rule for this IKE peer
  
set addressContext default ipsec spd PRGGSX2_SPD state enabled precedence 1001
set addressContext default ipsec spd PRGGSX2_SPD localIpAddr 10.220.41.161 localIpPrefixLen 32 remoteIpAddr 10.54.78.20 remoteIpPrefixLen 32
set addressContext default ipsec spd PRGGSX2_SPD action protect
set addressContext default ipsec spd PRGGSX2_SPD protocol 0
set addressContext default ipsec spd PRGGSX2_SPD protectionProfile PRGGSX2_IPSEC_PROT_PROF
set addressContext default ipsec spd PRGGSX2_SPD mode transport
set addressContext default ipsec spd PRGGSX2_SPD peer PRGGSX2
  
### enable IPsec on the IP interface group
  
set addressContext default ipInterfaceGroup LIG1 enabled
Info
titleNote

The SBC is enhanced to support supports IMS LI for PS-to-PS Handover handover scenarios. The enhancement has no impact on This support does not impact the IMS routing.

Viewing IMS LI Configuration

Enter the show commands to view the configurations.

Anchor
Viewing the Intercept Details
Viewing the Intercept Details
Viewing the Intercept Details

To Use the following command to view the intercept details, execute the following command:.

Code Block
languagenone
show status addressContext default intercept callDataChannel
callDataChannel CDC {
    mediationServerMediaStatus MS1 {
        tcpChannelstatus inService;
        tcpPacketsSent   0;
        tcpPacketsLost   0;
        udpPacketsSent   0;
        udpPacketsLost   0;
    }
    mediationServerSignalingStatus MS1 {
        tcpChannelStatus inService;
        DSRSuccess       0;
        DSRFailures      0;
    }
}
[ok]

Anchor
Viewing the CDC Configuration
Viewing the CDC Configuration
Viewing the CDC Configuration

To Use the following command to view the CDC configuration, execute the following command:.

Code Block
languagenone
show addressContext default intercept
nodeNumber 7788;
callDataChannel CDC {
    dsrProtocolVersion    0;
	interceptStandard     etsi;
    vendorId              verint;
    ipInterfaceGroupName  LIG1;
    liPolDipForRegdOodMsg enabled;
    rtcpInterception      enabled;
    mediaIpInterfaceGroupName LIG1;
    mediationServer MS1 {
        signaling {
            ipAddress    10.54.78.20;
            portNumber   65300;
            protocolType tcp;
            mode         inService;
            state        enabled;
        }
        media {
            tcp {
                ipAddress  10.54.78.20;
                portNumber 65120;
                mode       inService;
                state      enabled;
            }
            udp {
                ipAddress  10.54.78.20;
                portNumber 65200;
                mode       inService;
                state      enabled;
            }
        }
    }
}
[ok]

 

Pagebreak