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Back to Table of Contents

Back to Security

Back to SBC System Security

Additional sections:

Children Displaystyleh6

 

Overview

None/Utimaco/Verint
Excerpt
Info
titleNote

Unless otherwise stated, the LI configuration process is the same on Cloud-based and non-Cloud based systems.

The 

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

The

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works in conjunction with the IS, 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 IS. It also sends media stream (call content) to an IP address provided by the IS.

The

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supports three LI flavors:

  • Default LI
  • IMS LI
  • PCSI 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. It also provides the LI flavors supported in different platforms:

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Caption
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1LI Flavors with Supported Platforms
FlavorsCDC ConfigurationPlatformsRouting PolicyLI InterfaceStream Supported
Intercept StandardVendor Id
FlavorspacketCable
D-SBCSBC SWe/SBC 5000/7000 SeriesExternal PSXEREX1X2X3D-SBCSBC SWe/SBC 5000/7000 Series
Legacy LI (default)packetCable
Ss8PCSI LI3gpp/etsiVerint/utimaco/none
/packetCablePlusEtsinone/utimaco/verint

Supported

SupportedSupportedSupportedSOAP
  • RADIUS
  • RADIUS over IPSec
UDPAudio OnlyAudio Only
PCSI LIpacketCabless8SupportedSupportedSupportedNot SupportedTLSNot Supported
  • TCP
  • TCP over IPSec
All StreamsAudio Only
IMS LIthreeGpp/etsiverint/utimaco/none/groupTwoThousandSupportedSupportedSupportedSupportedSOAP
  • DSR
  • DSR over IPSec
  • UDP
  • UDP over IPSec
  • TCP
  • TCP over IPSec
Audio OnlyAll Streams
IMS LI

Call Data Channel (CDC) Model

The 

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 supports various flavors of LI and a generic Call Data Channel (CDC) model to support any new flavors of LI. The new CDC configuration model is described as follows:

  • The new CDC model co-exists with the old CDC model. The old CDC model is used only to configure default/legacy LI.The new CDC model have introduced two new fields CDC model includes two fields, vendorId and interceptStandard, to identify support identifying and configure configuring the various LI flavors of the LI.
  • Each Mediation Server can be configured is configurable to support both signaling and media interception. Separate configuration fields are present under the Mediation Server to handle this functionality.
  • The new CDC model for a given mediation server allows media interception over UDP and/or TCP.
  • The new CDC model for a given mediation server supports signaling interception either over TCP or UDP. It does not support both simultaneously.
NoteThe field priIpAddress was used to configure mediation server for IMS LI in SBC 05.00.00S20x VoLTE Release. The field mediaTypeIntercepted was updated with the value "multimedia" to distinguish IMS LI from the Legacy LI.