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<a name="a"></a>AAA Authentication, Authorization, Accounting
ANSI American National Standards Institute. <a href="" title="ansi" alt="ansi"></a>
<a name="b"></a>BRAS Broadband Remote Access Server, collects the output from DSLAMs
BSC Base Station Controller, a subsystem in a GSM mobile network
BTS Base Transceiver Station, a GSM base station
<a name="c"></a>CALEA Communications Assistance for Law Enforcement Act (CALEA), U.S. Law
CC Communication Content
CDMA Code Division Multiple Access, standard second-generation (2G) network technology in the United States, Australia and other countries
CS Circuit Switched
<a name="d"></a>DF Delivery Function
DRS Data Retention Suite
<a name="e"></a>ETSI European Telecommunications Standards Institute (ETSI). <a href="" title="etsi" alt="etsi"></a>
<a name="g"></a>GGSN Gateway GPRS Support Node
<a name="h"></a>HI Handover Interface
<a name="i"></a>IA Internet Access
IAP Interception Access Point, the point in the network at which interception takes place
ICD Interception Decision (warrant)
IIF Internal Interception Function
IMS IP Multimedia Subsystem (or Interception Management System)
IPDRs IP data records
IRI Interception Related Information, the metadata relating to a particular communications service, e.g., call detail records, time of call, caller ID, email address
<a name="l"></a>LEA Law Enforcement Agency
LI Lawful Interception
LIMS Lawful Interception Management System
<a name="m"></a>MC Monitoring Center
MD Mediation Device
MSC Mobile Switching Center, part of a GSM network
<a name="p"></a>PS Packet Switched
PSTN Public Switched Telephony Network
<a name="r"></a>RTP Real Time Transport Protocol
RTCP Real Time Transport Control Protocol
<a name="s"></a>SBC Session Border Controller
SDP Session Description Protocol
SGSN Serving GPRS Support Node, part of a GSM network
SIP Session Initiation Protocol
<a name="t"></a>TDM Time Devision Multiplex
<a name="u"></a>UMTS Universal Mobile Telecommunications System (UMTS), one of the third-generation (3G) wireless communication technologies
<a name="09"></a>3GPP The 3rd Generation Partnership Project (3GPP) is an alliance between ETSI (Europe), ARIB/TTC (Japan), CCSA (China), ATIS (North America), and TTA (South Korea). <a href="" title="3gpp" alt="3gpp"></a>