calea and j-std-025 revisions. calea communications assistance for law enforcement act (1994) ...

CALEAand

J-STD-025 revisions

CALEA

Communications Assistance for Law Enforcement Act (1994)

Standardized access to telecommunications systems using new technologies

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

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

J-STD-025

Intercept information is gathered at Intercept Access Points (IAPs). Placement of IAPs within the access system is left to implementation.

J-STD-025 (pub. 1997) LAES Messages

Answer

Change Origination PacketEnvelope Redirection Release Serving System Termination

Attempt

CCOpen CCClose

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

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

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

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

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

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

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).

Packet Data

Two SolutionsPacketEnvelope message over

the Call Data ChannelSend packets over Call Content

Channel

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

PacketEnvelope

Parameters:CaseIdentity (M) IAPSystemIdentity (C)TimeStamp (M)CallIdentity(C)Location (C)Packet Information (M)

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.

CCOpen

ParametersCaseIdentity (M) IAPSystemIdentity (C)TimeStamp (M)Content Type (M)

PDUType (e.g., IP, PPP, X.25 LAPB)

CCCIdentity (M)

CCClose

Parameters:CaseIdentity (M) IAPSystemIdentity (C)Timestamp (M)CCCIdentity (M)

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

CALEA and

J-STD-025 revisionsChair: Terri L. Brooks (Nokia)

Vice-Chair: Gary V. Pellegrino (CRAG)

Editor: Brye Bonner (Motorola)