Page 420 - Handbook of Modern Telecommunications

Network Management and Administration 3-211

The functional modules include the following domains:

• Telecommunications service provider domain:
• Network internal functions
• Internal interception function (IIF)
• Administrative function of telecommunications service providers
• IRI mediation function for the intercept-related information
• CC mediation function for the content of information
• LEA domain:
• Law enforcement monitoring function
• Law enforcement analysis function
• This reference model supports various interfaces:
• INI = Internal network interface
• HI1 = administrative information
• HI2 = intercept-related information
• HI3 = content of communications
• The HI2 and HI3 logical ports could, for example, be physically mapped to:
• a single channel-oriented channel
• a single packet-oriented channel
• several circuit-oriented channels
• several packet-oriented channels
• several circuit-oriented channels and one or more packet-oriented channels
The functional block diagram is shown in Figure 3.8.8. The functional components are defined in
Table 3.8.1.

NWO/AP/SvP’s Domain LEA Domain

NWO/AP/SvP’s HI1
IIF administration
function
Intercept related
Network information (IRI)
Internal IRI mediation HI2
Function Content of function
communication
(CC)
CC mediation HI3
function

INI LI handover LEMF
interface HI
IIF Internal Interception Funcion
INI Internal Network Interface
HI1 Administrative Information
HI2 Intercept Related Information
HI3 Content of Communication

FIGu RE 3.8.8 NWO/AP/SvP functional block diagram showing handover interfaces.