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CALEAand
J-STD-025 revisions
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CALEA
Communications Assistance for Law Enforcement Act (1994)
Standardized access to telecommunications systems using new technologies
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CALEA Call-identifying information
"dialing" or signaling which identifies the destination, direction, origin or termination of each communication generated or received by a subscriber by means of any equipment, facility, or service of a TSP
Call content actual voice or, for data, the payload
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J-STD-025
Two types of links between the accessing system and law enforcement CDC Call Data Channel CCC Call Content Channel
CDC carries real-time signaling of call or other events using a standard set of messages
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J-STD-025
Intercept information is gathered at Intercept Access Points (IAPs). Placement of IAPs within the access system is left to implementation.
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J-STD-025 (pub. 1997) LAES Messages
Answer
Change Origination PacketEnvelope Redirection Release Serving System Termination
Attempt
CCOpen CCClose
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J-STD-025A ArchitectureTelecommunicationService Provider
Law Enforcement Agency
b
c
d
e
a
The Scope of this Standard is limited to the e reference point.
Service ProviderAdministratiion
Function
Delivery
Function
Collection
Function
Access
Function
Law Enforcement
Administration
Function
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CALEA Third Report & Order
Released by FCC on August 31, 1999 Six of nine "punch list" items are
required Location is required Compliance deadline for “punch list”:
September 30, 2001 FCC notice on 9/28/2001 gave temporary
extension—final deadline not known yet but will not extend beyond June 30, 2002
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CALEA Third Report & Order(cont.)
Whitepaper on packet data from TIA required Submitted in September, 2000
Compliance deadline for delivery of packet data using "interim solution": 9/30/2001 FCC notice on 9/28/2001 indicating
deadline of November 19, 2001 for packet delivery or filing of extension request
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J-STD-025A
Punch List ( 6 required, 3 not required ) Content of subject-initiated conference calls Party Hold, Join, Drop on conference calls Subject-initiated dialing and signaling In-band and out-of-band signaling Timing information Dialed Digit Extraction Surveillance Status Message Feature Status Message Continuity Check Tone
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J-STD-025A Incorporates six required punch list
items Sent to publication April 2000 as TIA
Interim Standard/T1 Trial Use Standard No enhancements to packet data
sections Suspended before ANSI publication due
to US Court of Appeals Decision of August 15, 2000
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Court of Appeals Decision Court of Appeals Decision vacated four
of six required punch list features: Post cut-through dialed digit extraction Party Hold/Join/Drop information Subject initiated dialing and signaling
information In-band and out-of-band signaling
NOTE: It is not clear as to how the punch list items will apply to packet data
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Packet Data
Packet-mode: a communication where individual packets or virtual circuits of a communication within a physical circuit are switched or routed by the accessing telecommunication system. Each packet may take a different route through the intervening network (s).
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Packet Data
Two SolutionsPacketEnvelope message over
the Call Data ChannelSend packets over Call Content
Channel
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PacketEnvelope The PacketEnvelope message is used to convey data
packets over the CDC as they are intercepted. This solution is intended for low-volume packet communication (e.g., SMS).
Triggers: packet-mode user communication intended for the
intercept subject is detected packet-mode user communication from the intercept
subject is detected
NOTE: The PacketEnvelope solution does allow for delivery of only call-identifying information for court orders which do not authorize delivery of call content
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PacketEnvelope
Parameters:CaseIdentity (M) IAPSystemIdentity (C)TimeStamp (M)CallIdentity(C)Location (C)Packet Information (M)
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Packet Data over CCC
CCOpen messageThe CCOpen message may be
triggered when a delivery CCC is required for packet-mode data. The CCOpen is required when intercepted packets are to be delivered over a circuit or over a packet switched data network.
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CCOpen
ParametersCaseIdentity (M) IAPSystemIdentity (C)TimeStamp (M)Content Type (M)
PDUType (e.g., IP, PPP, X.25 LAPB)
CCCIdentity (M)
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CCClose
Parameters:CaseIdentity (M) IAPSystemIdentity (C)Timestamp (M)CCCIdentity (M)
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Packet Data Interception
Annex A.1 indicates nodes which could contain a Call-Identifying Information IAP, but does not dictate placement
Annexes A.5 and A.6 indicate possible CCC protocol stacks but leave flexibility
Annex B contains a description of CCC delivery methods, with B.6 focussing on Packet Data CCC Delivery
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CALEA and
J-STD-025 revisionsChair: Terri L. Brooks (Nokia)
Vice-Chair: Gary V. Pellegrino (CRAG)
Editor: Brye Bonner (Motorola)