ETSI EN 300 175-1 V1.8.1 (2004-11)

Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Part 1: Overview

REN/DECT-000215-1

Digitalne izboljšane brezvrvične telekomunikacije (DECT) – Skupni vmesnik (CI) – 1. del: Pregled

General Information

• Status: Published
• Publication Date: 17-Nov-2004
• Technical Committee: DECT - Digital Enhanced Cordless Telecommunications (DECT)
• Current Stage: 12 - Completion
• Due Date: 26-Nov-2004
• Completion Date: 18-Nov-2004
• Ref Project: SIST EN 300 175-1 V1.8.1:2006 - Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Part 1: Overview

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 300 175-1 V1.8.1:2006
01-marec-2006
'LJLWDOQHL]EROMãDQHEUH]YUYLþQHWHOHNRPXQLNDFLMH'(&7±6NXSQLYPHVQLN&,±
GHO3UHJOHG
Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Part 1:
Overview
Ta slovenski standard je istoveten z: EN 300 175-1 Version 1.8.1
ICS:
33.070.30 'LJLWDOQHL]EROMãDQH Digital Enhanced Cordless
EUH]YUYLþQHWHOHNRPXQLNDFLMH Telecommunications (DECT)
'(&7
SIST EN 300 175-1 V1.8.1:2006 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 300 175-1 V1.8.1:2006

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SIST EN 300 175-1 V1.8.1:2006

ETSI EN 300 175-1 V1.8.1 (2004-11)
European Standard (Telecommunications series)


Digital Enhanced Cordless Telecommunications (DECT);
Common Interface (CI);
Part 1: Overview

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SIST EN 300 175-1 V1.8.1:2006
 2 ETSI EN 300 175-1 V1.8.1 (2004-11)



Reference
REN/DECT-000215-1
Keywords
DECT, radio
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ETSI

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SIST EN 300 175-1 V1.8.1:2006
 3 ETSI EN 300 175-1 V1.8.1 (2004-11)
Contents
Intellectual Property Rights.4
Foreword.4
1 Scope.5
2 References.5
3 Definitions and abbreviations.6
3.1 Definitions.6
3.2 Abbreviations.13
4 Structure.18
4.1 Part 1: Overview.18
4.2 Part 2: Physical Layer (PHL) .18
4.3 Part 3: Medium Access Control (MAC) layer.18
4.4 Part 4: Data Link Control (DLC) layer.18
4.5 Part 5: Network (NWK) layer .18
4.6 Part 6: Identities and addressing.18
4.7 Part 7: Security features .19
4.8 Part 8: Speech coding and transmission .19
5 The objectives of the CI standard.19
6 General description of the system .20
7 Description of the protocol architecture.21
7.1 General.21
7.2 The DECT layered structure.21
7.3 Physical Layer (PHL).22
7.4 MAC layer.22
7.5 DLC layer.22
7.6 Network (NWK) layer.23
7.7 Lower Layer Management Entity (LLME) .23
7.8 Interworking Units (IWU).23
8 Proprietary escapes within the CI.23
8.1 Primary escape routes.24
8.2 Secondary escape routes.24
9 Levels of conformance.25
Annex A (informative): Bibliography.26
Annex B (informative): Change history .27
History .28

ETSI

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SIST EN 300 175-1 V1.8.1:2006
 4 ETSI EN 300 175-1 V1.8.1 (2004-11)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (http://webapp.etsi.org/IPR/home.asp).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This European Standard (Telecommunications series) has been produced by ETSI Project Digital Enhanced Cordless
Telecommunications (DECT).
The present document is part 1 of a multi-part deliverable covering the Common Interface (CI) for the Digital Enhanced
Cordless Telecommunications (DECT), as identified below:
Part 1: "Overview";
Part 2: "Physical Layer (PHL)";
Part 3: "Medium Access Control (MAC) layer";
Part 4: "Data Link Control (DLC) layer";
Part 5: "Network (NWK) layer";
Part 6: "Identities and addressing";
Part 7: "Security features";
Part 8: "Speech coding and transmission".
The following aspects of the present document are subject to controlled distribution:
a) DECT identities, as defined in EN 300 175-6 [5];
b) DECT cryptographic algorithms.
The cryptographic algorithms specify the details of the DECT standard authentication algorithm and the DECT standard
cipher.
These aspects are distributed on an individual basis. Further information and details of the current distribution
procedures can be obtained from the ETSI Secretariat at the address on the second page of the present document.
Further details of the DECT system may be found in TR 101 178 [8], ETR 043 [10] and TR 102 185 [11].

National transposition dates
Date of adoption of this EN: 12 November 2004
Date of latest announcement of this EN (doa): 28 February 2005
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 August 2005
Date of withdrawal of any conflicting National Standard (dow): 31 August 2005

ETSI

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SIST EN 300 175-1 V1.8.1:2006
 5 ETSI EN 300 175-1 V1.8.1 (2004-11)
1 Scope
The present document gives an introduction and overview of the complete Digital Enhanced Cordless
Telecommunications (DECT) Common Interface (CI).
The present document contains an abstract of the other parts of the DECT standard together with a general description
of:
- the objectives of the present document;
- the DECT Common Interface;
- the protocol architecture of DECT.
The present document also provides an extensive vocabulary; in particular it contains the common definitions of all the
technical terms used in different parts of the present document.
2 References
The following documents contain provisions which, through reference in this text, constitute provisions of the present
document.
• References are either specific (identified by date of publication and/or edition number or version number) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• For a non-specific reference, the latest version applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
[1] ETSI EN 300 175-2: "Digital Enhanced Cordless Telecommunications (DECT); Common
Interface (CI); Part 2: Physical Layer (PHL)".
[2] ETSI EN 300 175-3: "Digital Enhanced Cordless Telecommunications (DECT); Common
Interface (CI); Part 3: Medium Access Control (MAC) layer".
[3] ETSI EN 300 175-4: "Digital Enhanced Cordless Telecommunications (DECT); Common
Interface (CI); Part 4: Data Link Control (DLC) layer".
[4] ETSI EN 300 175-5: "Digital Enhanced Cordless Telecommunications (DECT); Common
Interface (CI); Part 5: Network (NWK) layer".
[5] ETSI EN 300 175-6: "Digital Enhanced Cordless Telecommunications (DECT); Common
Interface (CI); Part 6: Identities and addressing".
[6] ETSI EN 300 175-8: "Digital Enhanced Cordless Telecommunications (DECT); Common
Interface (CI); Part 8: Speech coding and transmission".
[7] ETSI EN 300 176 (all parts): "Digital Enhanced Cordless Telecommunications (DECT); Approval
test specification".
[8] ETSI TR 101 178: "Digital Enhanced Cordless Telecommunications (DECT); A High Level Guide
to the DECT Standardization".
[9] ETSI ETR 310: "Digital Enhanced Cordless Telecommunications (DECT); Traffic capacity and
spectrum requirements for multi-system and multi-service DECT applications co-existing in a
common frequency band".
[10] ETSI ETR 043: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface
(CI); Services and facilities requirements specification".
ETSI

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 6 ETSI EN 300 175-1 V1.8.1 (2004-11)
[11] ETSI TR 102 185: "Digital Enhanced Cordless Telecommunications (DECT); Data Services
Profile (DSP); Profile overview".
[12] ETSI EN 300 403-1: "Integrated Services Digital Network (ISDN); Digital Subscriber Signalling
System No. one (DSS1) protocol; Signalling network layer for circuit-mode basic call control;
Part 1: Protocol specification [ITU-T Recommendation Q.931 (1993), modified]".
[13] ITU-R Recommendation SM.1046-1 (1997): "Definition of spectrum use and efficiency of a radio
system".
[14] ITU-R Recommendation M.816-1 (1997): "Framework for services supported on International
Mobile Telecommunications-2000 (IMT-2000)".
[15] ITU-R Recommendation M.1457: "Detailed specifications of the radio interfaces of International
Mobile Telecommunications-2000 (IMT-2000)".
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
Access Rights Class (ARC): type of access to a DECT network, such as public, residential or private
Access Rights Details (ARD): unique number within one ARC
Access Rights Identity (ARI): globally unique identity that shows the access rights related to a service provider
NOTE: PARI = Primary ARI;
SARI = Secondary ARI;
TARI = Tertiary ARI.
algorithm: mathematical process or function that transforms an input into an output
algorithm identifier: designator to show which algorithm is in use, so that the correct one may be chosen
antenna diversity: diversity implies that the Radio Fixed Part (RFP) for each bearer independently can select different
antenna properties such as gain, polarization, coverage patterns and other features that may effect the practical coverage
NOTE: A typical example is space diversity, provided by two vertically polarized antennas separated by 10 cm to
20 cm.
asymmetric algorithm: See public key algorithm.
attach: process whereby a Portable Part (PP) within the coverage area of a Fixed Part (FP) to which it has access rights,
notifies the FP that it is operative
authentication: corroboration that an entity is the one that is claimed
authentication of Fixed radio Termination (FT): process whereby the identity of an FT is verified to a DECT PT
authentication of Portable radio Termination (PT): process whereby a DECT PT is positively verified to be a
legitimate user of a particular FP
authentication (of a subscriber): process whereby a DECT subscriber is positively verified to be a legitimate user of a
particular FP
authentication of user: process whereby a DECT user is positively verified to be a legitimate user of a particular FP
bearer: See Medium Access Control (MAC) bearer or bearer service.
bearer handover: internal handover process provided by the MAC layer, whereby one MAC connection can modify its
underlying bearers while maintaining the service provided to the Data Link Control (DLC) layer
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SIST EN 300 175-1 V1.8.1:2006
 7 ETSI EN 300 175-1 V1.8.1 (2004-11)
bearer service: type of telecommunication service that provides a defined capability for the transmission of signals
between user-network interfaces
broadcast: simplex point-to-multipoint mode of transmission
C-plane: control plane of the DECT protocol stacks, which contains all of the internal DECT protocol control, but may
also include some external user information
call: all of the Network (NWK) layer processes involved in one NWK layer peer-to-peer association
cell: domain served by a single antenna(e) system (including a leaky feeder) of one FP
Central Control Fixed Part (CCFP): physical grouping that contains the central elements of a FP
centrex: implementation of a private telecommunication network exchange that is not located on the premises of the
private network operator
Cipher Key (CK): value that is used to determine the transformation of plaintext to ciphertext in a cryptographic
algorithm
Cipher Key (CK) generation: process for generating cryptographic keys
ciphertext: output of a cryptographic algorithm
channel: See physical channel.
cluster: logical grouping of one or more cells between which bearer handover is possible
confidentiality: rendering information secret as ciphertext unless the capability is possessed to recover the plaintext
from ciphertext
connection: See MAC connection.
connection handover: internal handover process provided by the DLC layer, whereby one set of DLC entities (C-plane
and U-plane) can re-route data from one MAC connection to a second new MAC connection, while maintaining the
service provided to the NWK layer
Connectionless mode (C/L): transmission mode that transfers one packet (one self contained unit) of data from one
source point to one (or more) destination points in a single phase
Connection Oriented mode (C/O): transmission mode that transfers data from one source point to one or more
destination points using a protocol based on three phases:
• "Set-up";
• "Data transfer"; and
• "Release".
Cordless Radio Fixed Part (CRFP): Wireless Relay Station (WRS) that provides independent bearer control to a PT
and FT for relayed connections
countermeasure: device, instrument or procedure used to counteract or defend against a threat
coverage area: area over which reliable communication can be established and maintained
cryptography: secret writing
Data Encryption Standard (DES): United States Federal data encryption standard
Data Link Control (DLC): layer 2b of the DECT protocol stack
decipherment: rendering of ciphertext into plaintext
DECT Network (DNW): network that uses the DECT air interface to interconnect a local network to one or more
portable applications
DECT Standard Authentication Algorithm (DSAA): algorithm used for authentication in DECT
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SIST EN 300 175-1 V1.8.1:2006
 8 ETSI EN 300 175-1 V1.8.1 (2004-11)
DECT Standard Cipher (DSC): algorithm used for data encryption in DECT
distributed communication: the ability of a DECT terminal to provide means for or assist direct communication
between any two terminals, members of a "closed" local DECT network
DLC broadband data link: link that can be associated with a logical MAC connection comprising a number of MAC
(physical) connections
DLC broadcast: simplex "connectionless" mode of transmission from the DLC broadcast entity of one FT to the DLC
broadcast entities in one or more PT
DLC data link (DLC link): association between two DLC layer entities
DLC frame: format used to structure all messages that are exchanged between DLC layer peer entities
double duplex bearer: use of two duplex bearers (see duplex bearer) which refer to the same MAC connection, sharing
their simplex bearers (see simplex bearer) for the information flow
double-simplex bearer: use of two simplex bearers operating in the same direction on two physical channels
th
double slot: one 12 of a TDMA frame which is used to support one high capacity physical channel
down-link: transmission in the direction FT to PT
duplex bearer: use of two simplex bearers operating in opposite directions on two physical channels
encipherment: rendering of plaintext into ciphertext
End System (ES): logical grouping that contains application processes and supports telecommunication services
Extended MAC control messages: MAC messages of the B-field connection control set
external handover: process of switching a call in progress from one FP to another FP
Fast Encryption Algorithm (FEAL algorithm): a particular encryption algorithm in the public domain
field: continuous region of data (i.e. adjacent bits) that jointly convey information
fixed geometry Portable Part (PP): PP in which the electro-acoustic transducers and their associated acoustic
components are held in fixed relative positions and/or orientations during all on-line conditions and test conditions of
the PP
Fixed Part (DECT Fixed Part) (FP): physical grouping that contains all of the elements in the DECT network
between the local network and the DECT air interface
Fixed radio Termination (FT): logical group of functions that contains all of the DECT processes and procedures on
the fixed side of the DECT air interface
flow control: mechanism that is used to regulate the flow of data between two peer entities
fragment: one of the Service Data Units (SDUs) that is produced by the process of fragmentation
fragmentation: process of dividing a Protocol Data Unit (PDU) into more than one SDU for delivery to a lower layer
frame: See TDMA frame or DLC frame.
th
full slot (slot): one 24 of a TDMA frame which is used to support one physical channel
generic: generalized set or general purpose set, often in the sense of basic or ordinary
Generic Access Profile (GAP): standard in addition to the DECT CI that ensures interoperability between FPs and PPs
from different manufacturers
geographically unique: two FPs with the same PARI, or respectively two RFPs with the same RFPI, cannot be reached
or listened to at the same geographical position
Global NetWork (GNW): telecommunication network capable of offering a long distance telecommunication service
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SIST EN 300 175-1 V1.8.1:2006
 9 ETSI EN 300 175-1 V1.8.1 (2004-11)
globally unique identity: identity is unique within DECT (without geographical or other restrictions)
guard space: nominal interval between the end of a radio transmission in a given slot and the start of a radio
transmission in the next successive slot
th
half slot: one 48 of a TDMA frame which is used to support one physical channel
handover: process of switching a call in progress from one physical channel to another physical channel
handset echo: echo, perceptible by the far-end user, resulting from the coupling between the receiving and sending
directions of the handset, mostly due to acoustic coupling between transducers
Hybrid Part (HyP): DECT terminal that provides FT as well as PT capabilities
impersonation: where one identity claims the part of another identity
incoming call: call received at a PP
Integrated Services Digital Network (ISDN): digital telecommunications infrastructure to the Consultative
Committee on International Telegraphy and Telephony (CCITT) standards
intercell handover: switching of a call in progress from one cell to another cell
internal call: call between 2 users that does not make use of the local network resources
internal handover: handover processes that are completely internal to one FT
International Portable User Identity (IPUI): identity that uniquely defines one user within the domain defined by his
access rights related to this IPUI
interoperability: capability of FPs and PPs, that enable a PP to obtain access to teleservices in more than one location
area and/or from more than one operator (more than one service provider)
interoperator roaming: roaming between FP coverage areas of different operators (different service providers)
InterWorking Unit (IWU): unit that is used to interconnect subnetworks
intracell handover: switching of a call in progress from one physical channel of one cell to another physical channel of
the same cell
intraoperator roaming: roaming between different FP coverage areas of the same operator (same service provider)
isochronous: essential characteristic of a time-scale or a signal such that the time intervals between consecutive
significant instants either have the same duration or durations that are integral multiples of the shortest duration
key management: way in which cryptographic keys are generated, distributed and used
Key Stream Generator (KSG): cryptographic algorithm which produces a stream of binary digits which can be used
for encipherment and decipherment
link: See DLC data link.
Local Area Network (LAN): electronic systems which are interconnected and in physical proximity to each other
Local Network (LNW): telecommunication network capable of offering local telecommunication services
locally unique identity: identity is unique within one FP or location area, depending on application
location area: domain in which a PP may receive (and/or make) calls as a result of a single location registration
location registration: process whereby the position of a DECT portable termination is determined to the level of one
location area, and this position is updated in one or more databases
logical channel: generic term for any distinct data path
logical connection: association between two instances of the MAC MBC that can be used by higher layers to exchange
U-plane or C-plane data
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SIST EN 300 175-1 V1.8.1:2006
 10 ETSI EN 300 175-1 V1.8.1 (2004-11)
Lower Layer Management Entity (LLME): management entity that spans a number of lower layers, and is used to
describe all control activities which do not follow the rules of layering
Lower Tester (LT): logical grouping that contains the test equipment, a functionally equivalent DECT PT, a
functionally equivalent DECT FT and a test controller
MAC bearer (bearer): service element that is provided by each Cell Site Function (CSF)
MAC connection (connection): association between one source MAC Multi-Bearer Control (MBC) entity and one
destination MAC MBC entity
masquerading: where one identity plays the part of, or acts as, another identity
Medium Access Control (MAC): layer 2a of the DECT protocol stack
minimal MMS-message attributes: message meta-information used in the request-to-send, etc.
MMS-message attributes: message meta-information
mobility class 1: local area applications, for which terminals are pre-registered off-air with one or more specific fixed
parts, and establishment of service and user parameters is therefore implicit, according to a profile-defined list
mobility class 2: private and public roaming applications for which terminals may move between FPs within a given
domain and for which association of service parameters is explicit at the time of service request
multiframe: repeating sequence of 16 successive TDMA frames, that allows low rate or sporadic information to be
multiplexed (e.g. basic system information or paging)
Multimedia Messaging Service: generic set of commands, information elements and functionality for file/messaging
service
mutual authentication: where two entities corroborate the identity of each other
network (telecommunication network): all the means of providing telecommunication services between a number of
locations where the services are accessed via equipment attached to the network
network echo: echo, perceptible by the DECT user, resulting from reflections in the network. It is mostly due to hybrid
impairments at both ends of the communication
node: point at which switching occurs
operator (DECT operator): individual or entity who or which is responsible for operation of one or more DECT FPs
outgoing call: call originating from a PP
paging: process of broadcasting a message from a DECT FP to one or more DECT PPs
paging area: domain in which the PP will be paged as a part of incoming call establishment
PARK Length Indicator (PLI): associates a group of FP ARIs to the PARK, by indicating how many of the first
ARC + ARD bits are relevant
Personal Identity Number (PIN): short sequence of numbers (usually 4 to 8 digits) which may be used in an
authentication process to prove identity
phase: one discrete part of a procedure, where the start and end of the part can be clearly identified (e.g. by the arrival
or dispatch of a primitive)
Physical (PHY): layer 1 of the DECT protocol stack
physical channel (channel): simplex channel that is created by transmitting in one particular slot on one particular RF
channel in successive TDMA frames
plaintext: information or data which is intelligible to everyone
Portable Access Rights Key (PARK): this states the access rights for a PP
ETSI

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 11 ETSI EN 300 175-1 V1.8.1
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