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| Lawful Interception with [[Tmedia]] running [[Toolpack]] software is capable of performing lawful interception of calls, based on ETSI 201 671 v2-1-1 standard.
| | #REDIRECT [[Tmedia_Lawful_Intercept]] |
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| ==Functionality overview==
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| [[Image:Lawful-intercept-details.png|thumb|360px|Schematic showing interception of a call already routed with a Tmedia]]
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| Lawful interception will identify a call to intercept, and send the following information to one or multiple Law Enforcement agencies:
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| * information on an intercepted call (calling/called numbers, timestamps, call duration, etc.)
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| * audio from both directions of the call
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| Interception of a call is triggered by:
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| * A phone number to monitor
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| * A date/time period
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| A call that matches the number and the time period will be intercepted.
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| ==Toolpack implementation==
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| With a [[Tmedia]] system running the [[Toolpack]] software (version 2.7 or above), lawful interception is triggered by a routing script. This script uses the information from a configuration file (csv format), to determine which phone number must be intercepted during which time period.
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| A call that matches the number (calling or called number) and the time period will be intercepted.
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| During the interception, two outgoing calls toward an interception [[NAP]] will be placed, each containing a copy of the audio of one direction of the intercepted call. The specified [[NAP]] must be configured to point to the Law Enforcement Agency, generally using ISDN trunks.
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| In addition, information records (containing general call information like calling/called number, timestamps, and call duration, etc.) will be sent to the Law Enforcement Agency. That information is sent as data files (format specified by ETSI 201 671 v2-1-1) to a FTP server (Toolpack also supports SFTP for more security).
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| Lawful Intercept configuration (NAP to use, login information of the FTP/SFTP server, target numbers to intercept, etc.) can be configured in the [[Toolpack]] Web Portal.
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| See the following page for more information: [[configuring_lawful_interception|Configure Lawful Interception in Toolpack]].
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| ==Information to get from Law Enforcement Agencies==
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| In order to use Lawful interception in Toolpack, the Law Enforcement Agency must provide:
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| * List of targets to intercept:
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| ** Unique target identifier (defined as LIID in ETSI 201 671 v2-1-1)
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| ** Target phone number
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| ** Start and end date/time for the interception
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| * ISDN trunks (or eventually SS7 trunks or SIP path) to carry intercepted call audio
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| * FTP/SFTP server address, user name, password and directory path to use for uploading call information (defined as IRI records in ETSI 201 671 v2-1-1)
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| This information must be entered in Toolpack configuration as explained in the following page: [[configuring_lawful_interception|Configure Lawful Interception in Toolpack]].
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