Intercept Related Information - Revision history

William Wong: Redirected page to Lawful Interception#IRI records

2016-10-18T10:14:26Z

Redirected page to Lawful Interception#IRI records

← Older revision		Revision as of 06:14, 18 October 2016
Line 1:		Line 1:
	#REDIRECT [[~~Lawful Interception~~]]		#REDIRECT [[Lawful_Interception#IRI_records\|IRI]]

William Wong: Redirected page to Lawful Interception

2016-10-12T08:45:46Z

Redirected page to Lawful Interception

← Older revision		Revision as of 04:45, 12 October 2016
Line 1:		Line 1:
	~~The call data (known as Intercept Related Information or~~ [[IRI]] in Europe and Call Data or CD in the US) consists of information about the targeted communications, including destination of a voice call (e.g., called party’s telephone number), source of a call (caller’s phone number), time of the call, duration, etc.		#REDIRECT [[Lawful Interception]]

	~~==IRI records==~~

	* Lawful Interception~~, a feature as provided by service providers, requires law enforcement agency to first meet Lawful Interception Requirements by providing:~~
	** A list of targets
	*** Type of intercepted targets can be from: PSTN, ISDN, GSM (CS), TETRA, GPRS (PD), UMTS (CS)
	** LIID (unique identifier) for the target
	** Phone number (calling or called number) of the target
	** Start/end date and time for the interception
	* Service provider updates targets list in it’s equipments
	* The equipments detect a matching calling or called number, and activates the interception
	* Lawful Interception, then allows law enforcement agencies to intercept calls
	** By receiving a copy of the audio of both parties, through CC link (forked call) which is a call toward the agency, carrying intercepted audio
	** By receiving call information records (or IRI records)
	* Intercept Related Information record (IRI record) is a CDR-style record that contain IRI information on an intercepted call

	~~==IRI records generating==~~

	~~[[Image:Lawful-intercept-details.png\|thumb\|360px\|Schematic showing interception of a call already routed with a Tmedia]]~~

	* IRI records are generated at various states of the interception
	* They provide information on the interception, and call state
	* In a call, each call leg can be an interception target
	* When a leg is an interception target, it’s intercepted:
	** Audio «from» this leg is forked to a new outgoing call toward the agency
	** Audio «to» this leg is forked to a new outgoing call toward the agency
	** IRI records are generated for this interception
	* Both legs may be independently and simultaneously intercepted
	** 2 pairs of forked audio outgoing calls
	** 2 sets of IRI records

	~~==Types of IRI records==~~

	* Start: Indicate that the interception is starting at first event of the communication attempt
	* Continue: Indicate call state change at any time during the communication (attempt)
	* End: Indicate the end of the interception at the end of the communication (attempt)
	* Report: For any non-communication related events

	~~===Typical information found in an IRI record===~~

	* Record type (Start, Continue, End, Report)
	* LIID (unique identifier of the intercepted target assigned by an agency)
	* CIN (communication identity number)
	* Operator identifier
	* Direction (target is originating, or terminating)
	* Call state (idle, setup, connected)
	* Duration of ring and conversation states
	* Calling / called party numbers
	* Release reason
	* CC link state (setup, active, released, lack of resources)
	* CC link release reason

	~~==IRI records encoding==~~
	* IRI records are encoded in ASN.1 format
	* ASN.1 IDs and objects hierarchy for encoding IRI records is provided by ETSI specifications

	~~==IRI records values and files specification==~~
	* IRI records values can be
	** Mandatory in each record
	** In one record only for the whole call
	** optional (in some records only, or none at all)
	* IRI record files can
	** Contain only one IRI record (one file per record)
	** Contain multiple IRI records (grouped)

	~~==IRI records uploading to the agency==~~
	* As files, using the FTP protocol
	* Telcobridges supports SFTP as file transfer method as well


	~~== References ==~~

	~~[http://en.wikipedia.org/wiki/Lawful_interception Wikipedia lawful intercept article]~~

	~~[[category:Tmedia_Features]]~~
	~~[[category:Needs revising~~]]

William Wong at 10:16, 3 October 2016

2016-10-03T10:16:18Z

← Older revision		Revision as of 06:16, 3 October 2016
Line 5:		Line 5:
	* Lawful Interception, a feature as provided by service providers, requires law enforcement agency to first meet Lawful Interception Requirements by providing:		* Lawful Interception, a feature as provided by service providers, requires law enforcement agency to first meet Lawful Interception Requirements by providing:
	** A list of targets		** A list of targets
			*** Type of intercepted targets can be from: PSTN, ISDN, GSM (CS), TETRA, GPRS (PD), UMTS (CS)
	** LIID (unique identifier) for the target		** LIID (unique identifier) for the target
	** Phone number (calling or called number) of the target		** Phone number (calling or called number) of the target

William Wong at 10:13, 3 October 2016

2016-10-03T10:13:31Z

← Older revision		Revision as of 06:13, 3 October 2016
Line 3:		Line 3:
	==IRI records==		==IRI records==

	* Lawful Interception, a feature as provided by service providers, requires law enforcement agency to ~~furst~~ meet Lawful Interception Requirements		* Lawful Interception, a feature as provided by service providers, requires law enforcement agency to first meet Lawful Interception Requirements by providing:
	** ~~Law enforcement agency provides a~~ list of targets		** A list of targets
	** LIID (unique identifier) for the target		** LIID (unique identifier) for the target
	** Phone number (calling or called number) of the target		** Phone number (calling or called number) of the target
	** Start/end date and time for the interception		** Start/end date and time for the interception
	** Service provider updates targets list in it’s equipments		* Service provider updates targets list in it’s equipments
	** The equipments detect a matching calling or called number, and activates the interception		* The equipments detect a matching calling or called number, and activates the interception
	* Lawful Interception, allows law enforcement agencies to intercept calls		* Lawful Interception, then allows law enforcement agencies to intercept calls
	** By receiving a copy of the audio of both parties, through CC link (forked call) which is a call toward the agency, carrying intercepted audio		** By receiving a copy of the audio of both parties, through CC link (forked call) which is a call toward the agency, carrying intercepted audio
	** By receiving call information records (or IRI records)		** By receiving call information records (or IRI records)

William Wong at 10:10, 3 October 2016

2016-10-03T10:10:09Z

← Older revision		Revision as of 06:10, 3 October 2016
Line 3:		Line 3:
	==IRI records==		==IRI records==

	* Lawful Interception, a feature as provided by service providers, requires law enforcement agency to furst meet Lawful Interception Requirements:Law enforcement agency provides a list of targets		* Lawful Interception, a feature as provided by service providers, requires law enforcement agency to furst meet Lawful Interception Requirements
	*** LIID (unique identifier) for the target		** Law enforcement agency provides a list of targets
	*** Phone number (calling or called number) of the target		** LIID (unique identifier) for the target
	*** Start/end date and time for the interception		** Phone number (calling or called number) of the target
	*** Service provider updates targets list in it’s equipments		** Start/end date and time for the interception
	*** The equipments detect a matching calling or called number, and activates the interception		** Service provider updates targets list in it’s equipments
			** The equipments detect a matching calling or called number, and activates the interception
	* Lawful Interception, allows law enforcement agencies to intercept calls		* Lawful Interception, allows law enforcement agencies to intercept calls
	** By receiving a copy of the audio of both parties, through CC link (forked call) which is a call toward the agency, carrying intercepted audio		** By receiving a copy of the audio of both parties, through CC link (forked call) which is a call toward the agency, carrying intercepted audio

William Wong at 10:08, 3 October 2016

2016-10-03T10:08:49Z

← Older revision		Revision as of 06:08, 3 October 2016
Line 13:		Line 13:
	** By receiving call information records (or IRI records)		** By receiving call information records (or IRI records)
	* Intercept Related Information record (IRI record) is a CDR-style record that contain IRI information on an intercepted call		* Intercept Related Information record (IRI record) is a CDR-style record that contain IRI information on an intercepted call

	* Lawful Interception, a feature as provided by service providers, requires law enforcement agency to first meet Lawful Interception Requirements:
	*** Law enforcement agency provides a list of targets


	==IRI records generating==		==IRI records generating==

William Wong at 10:07, 3 October 2016

2016-10-03T10:07:28Z

← Older revision		Revision as of 06:07, 3 October 2016
Line 3:		Line 3:
	==IRI records==		==IRI records==

	* Lawful Interception, a feature as provided by service providers, requires law enforcement agency to furst meet Lawful Interception Requirements:		* Lawful Interception, a feature as provided by service providers, requires law enforcement agency to furst meet Lawful Interception Requirements:Law enforcement agency provides a list of targets
	~~***~~ Law enforcement agency provides a list of targets
	*** LIID (unique identifier) for the target		*** LIID (unique identifier) for the target
	*** Phone number (calling or called number) of the target		*** Phone number (calling or called number) of the target

William Wong at 10:06, 3 October 2016

2016-10-03T10:06:36Z

← Older revision		Revision as of 06:06, 3 October 2016
Line 3:		Line 3:
	==IRI records==		==IRI records==

	* Lawful Interception, a feature as provided by service providers, requires law enforcement agency to ~~first~~ meet Lawful Interception Requirements:		* Lawful Interception, a feature as provided by service providers, requires law enforcement agency to furst meet Lawful Interception Requirements:
	*** Law enforcement agency provides a list of targets		*** Law enforcement agency provides a list of targets
	*** LIID (unique identifier) for the target		*** LIID (unique identifier) for the target

William Wong at 10:04, 3 October 2016

2016-10-03T10:04:27Z

← Older revision		Revision as of 06:04, 3 October 2016
Line 11:		Line 11:
	*** The equipments detect a matching calling or called number, and activates the interception		*** The equipments detect a matching calling or called number, and activates the interception
	* Lawful Interception, allows law enforcement agencies to intercept calls		* Lawful Interception, allows law enforcement agencies to intercept calls
	** By firstly having law enforcement agency meeting Lawful Interception Requirements:
	** By receiving a copy of the audio of both parties, through CC link (forked call) which is a call toward the agency, carrying intercepted audio		** By receiving a copy of the audio of both parties, through CC link (forked call) which is a call toward the agency, carrying intercepted audio
	** By receiving call information records (or IRI records)		** By receiving call information records (or IRI records)
	* Intercept Related Information record (IRI record) is a CDR-style record that contain IRI information on an intercepted call		* Intercept Related Information record (IRI record) is a CDR-style record that contain IRI information on an intercepted call

			* Lawful Interception, a feature as provided by service providers, requires law enforcement agency to first meet Lawful Interception Requirements:
			*** Law enforcement agency provides a list of targets


	==IRI records generating==		==IRI records generating==

William Wong at 10:02, 3 October 2016

2016-10-03T10:02:46Z

← Older revision		Revision as of 06:02, 3 October 2016
Line 3:		Line 3:
	==IRI records==		==IRI records==

	* Lawful Interception, a feature as provided by service providers, requires law enforcement agency ~~meeting~~ Lawful Interception Requirements:		* Lawful Interception, a feature as provided by service providers, requires law enforcement agency to first meet Lawful Interception Requirements:
	*** Law enforcement agency provides a list of targets		*** Law enforcement agency provides a list of targets
	*** LIID (unique identifier) for the target		*** LIID (unique identifier) for the target