SIST TBR 004 E1:2004

SLOVENSKI STANDARD
01-oktober-2004
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Integrated Services Digital Network (ISDN); Attachment requirements for terminal
equipment to connect to an ISDN using ISDN primary rate access
Ta slovenski standard je istoveten z: TBR 004 Edition 1
ICS:
33.080 Digitalno omrežje z Integrated Services Digital
integriranimi storitvami Network (ISDN)
(ISDN)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL TBR 4
BASIS for November 1995
REGULATION
Source: ETSI TC-BTC Reference: DTBR/BTC-02035
ICS: 33.080
ISDN, terminal equipment, primary rate access
Key words:
Integrated Services Digital Network (ISDN);
Attachment requirements for terminal equipment to connect
to an ISDN using ISDN primary rate access
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
F-06921 Sophia Antipolis CEDEX - FRANCE
Postal address:
650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
Office address:
c=fr, a=atlas, p=etsi, s=secretariat - secretariat@etsi.fr
X.400: Internet:
Tel.: +33 92 94 42 00 - Fax: +33 93 65 47 16
Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and the
foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 1995. All rights reserved.
New presentation - see History box

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TBR 4: November 1995
Whilst every care has been taken in the preparation and publication of this document, errors in content,
typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to
"ETSI Editing and Committee Support Dept." at the address shown on the title page.

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TBR 4: November 1995
Contents
Foreword .12
The machine processable ATS .12
1 Scope .14
2 Normative references.14
3 Definitions, symbols and abbreviations.15
3.1 Definitions .15
3.2 Abbreviations .17
4 General.18
5 Definitions of primitives .19
5.1 Generic names .19
5.1.1 DL-ESTABLISH.19
5.1.2 DL-RELEASE .19
5.1.3 DL-DATA.20
5.1.4 DL-UNIT DATA.20
5.1.5 MDL-ASSIGN .20
5.1.6 MDL-REMOVE .20
5.1.7 MDL-ERROR.20
5.1.8 MDL-UNIT DATA.20
5.1.9 PH-DATA.20
5.1.10 PH-ACTIVATE.21
5.1.11 PH-DEACTIVATE.21
5.2 Primitive types.21
5.2.1 REQUEST.21
5.2.2 INDICATION.21
5.2.3 RESPONSE .21
5.2.4 CONFIRM.21
5.3 Parameter definition.21
5.3.1 Priority indicator.21
5.3.2 Message unit .22
6 Safety requirements .23
7 Electro-Magnetic Compatibility (EMC) requirements .23
8 Overvoltage protection requirements .23
8.1 Impulse transfer from mains, common mode.23
8.2 Impulse transfer from mains, transverse mode.23
8.3 Conversion of common mode to transverse mode.23
9 Layer 1 requirements .23
9.1 Physical characteristics.23
9.1.1 Hardwired connection.24
9.1.2 Alternative means of connection .24
9.2 Specification at the output port .25
9.2.1 Waveform shape.25
9.2.2 Impedance towards ground.26
9.2.3 Clock accuracy.27
9.2.4 Output jitter.27
9.2.5 Line coding .27
9.3 Specification at the input port.28

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TBR 4: November 1995
9.3.1 Return loss. 28
9.3.2 Immunity to attenuation and reflections. 28
9.3.3 Jitter tolerance . 28
9.3.4 Tolerable longitudinal voltage . 29
9.3.5 Impedance towards ground . 29
9.4 Frame structure. 30
9.4.1 Frame length. 30
9.4.2 Number of bits per timeslot. 30
9.4.3 Number of timeslots per frame . 30
9.4.4 Assignment of bits in Time-Slot 0 (TS0). 30
9.4.5 Allocation of bits 1 to 8 of the frame for a complete multiframe . 30
9.4.6 Sub-Multiframes (SMF) . 31
9.4.7 Cyclic Redundancy Check (CRC). 31
9.4.7.1 Multiplication/division process. 31
9.4.7.2 Encoding procedure. 31
9.4.7.3 Decoding procedure. 32
9.4.8 Use of bit 1 in 2 048 kbit/s CRC-4 multiframe . 32
9.4.9 Timeslot assignment. 32
9.5 Operational functions .32
9.5.1 Definition of signals at the interface. 33
9.5.2 Layer 1 states at the TE. 33
9.5.3 State tables. 34
9.5.4 Maintenance at the interface . 35
9.5.4.1 Definitions of maintenance signals . 35
9.5.4.2 Maintenance functions . 36
9.5.4.2.1 Anomalies and defect detection. 36
9.5.4.2.2 Detection of defect indication signals. 36
9.5.4.2.3 Consequent actions . 36
9.5.5 Frame alignment and CRC procedures at 2 048 kbit/s interface . 37
9.5.5.1 Loss of frame alignment . 37
9.5.5.2 Strategy for frame alignment recovery. 37
9.5.5.3 CRC multiframe alignment using information in bit 1 of
the basic frame . 38
9.5.5.4 CRC bit monitoring. 38
9.5.5.5 Monitoring for false frame alignment . 38
10 Layer 2 requirements. 39
10.1 Frame structure for peer-to-peer communication . 39
10.1.1 General . 39
10.1.2 Flag sequence . 39
10.1.3 Address field. 39
10.1.4 Control field. 40
10.1.5 Information field . 40
10.1.6 Transparency. 40
10.1.7 Frame Check Sequence (FCS) field. 40
10.1.8 Format convention. 40
10.1.8.1 Numbering convention . 40
10.1.8.2 Order of bit transmission. 41
10.1.8.3 Field mapping convention . 41
10.1.9 Invalid or incompatible frames. 41
10.2 Elements of procedures and formats of fields for data link layer peer-to-peer
communication. 42
10.2.1 General . 42
10.2.2 Address field format. 42
10.2.3 Address field variables. 42
10.2.3.1 Address field Extension bit (EA) . 42
10.2.3.2 Command/Response field bit (C/R) . 42
10.2.3.3 Service Access Point Identifier (SAPI). 43
10.2.3.4 Terminal Endpoint Identifier (TEI). 43
10.2.3.4.1 TEI for broadcast data link connection. 43
10.2.3.4.2 TEI for point-to-point data link
connection. 43
10.2.4 Control field formats . 44

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TBR 4: November 1995
10.2.4.1 Information transfer (I) format.44
10.2.4.2 Supervisory (S) format.44
10.2.4.3 Unnumbered (U) format .44
10.2.5 Control field parameters and associated state variables .45
10.2.5.1 Poll/Final bit .45
10.2.5.2 Multiple frame operation - variables and sequence
numbers.45
10.2.5.2.1 Modulus .45
10.2.5.2.2 Send state variable V(S).45
10.2.5.2.3 Acknowledge state variable V(A).45
10.2.5.2.4 Send sequence number N(S) .45
10.2.5.2.5 Receive state variable V(R) .45
10.2.5.2.6 Receive sequence number N(R) .46
10.2.6 Frame types .46
10.2.6.1 Commands and responses .46
10.2.6.2 Information (I) command .46
10.2.6.3 Set Asynchronous Balanced Mode Extended (SABME)
command.47
10.2.6.4 DISConnect (DISC) command .47
10.2.6.5 Unnumbered Information (UI) command.47
10.2.6.6 Receive Ready (RR) command/response.47
10.2.6.7 REJect (REJ) command/response.47
10.2.6.8 Receive Not Ready (RNR) command/response.47
10.2.6.9 Unnumbered Acknowledgement (UA) response .48
10.2.6.10 Disconnected Mode (DM) response.48
10.3 Provision of point-to-point signalling connections.48
10.4 Procedures for unacknowledged information transfer.48
10.4.1 Transmission of unacknowledged information.48
10.4.2 Receipt of unacknowledged information .49
10.5 Terminal Endpoint Identifier (TEI) management procedures.49
10.5.1 General.49
10.5.2 TEI assignment procedure .49
10.5.2.1 Expiry of timer T202 .50
10.5.3 TEI check procedure .50
10.5.4 TEI removal procedure.51
10.5.4.1 Action taken by the data link layer entity receiving the
MDL-REMOVE-REQUEST primitive .51
10.5.4.2 Conditions for TEI removal.51
10.5.5 TEI identity verify procedure.51
10.5.5.1 General.51
10.5.5.2 Operation of the TEI identity verify procedure .51
10.5.5.3 Expiry of timer T202 .51
10.5.6 Formats and codes .52
10.5.6.1 General.52
10.5.6.2 Layer management entity identifier.52
10.5.6.3 Reference number (Ri).53
10.5.6.4 Message type .53
10.5.6.5 Action indicator (Ai).53
10.6 Procedures for establishment and release of multiple frame operation .53
10.6.1 Establishment of multiple frame operation.53
10.6.1.1 General.53
10.6.1.2 Establishment procedures.53
10.6.1.3 Procedure on expiry of timer T200 .54
10.6.2 Termination of multiple frame operation.55
10.6.3 Collision of unnumbered commands and responses .55
10.6.3.1 Identical transmitted and received commands .55
10.7 Procedures for information transfer in multiple frame operation .55
10.7.1 Transmitting I-frames .55
10.7.2 Receiving I-frames .55
10.7.2.1 P bit set to 1.56
10.7.2.2 P bit set to 0.56
10.7.3 Receiving acknowledgements.56
10.7.4 Receiving REJ frames.57

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TBR 4: November 1995
10.7.5 Receiving RNR frames . 58
10.7.5.1 Receiving a valid RNR command or response . 58
10.7.5.2 Expiry of timer T200 during "peer receiver busy". 58
10.7.5.3 Receiving a valid RNR command or response during
"peer receiver busy" . 58
10.7.5.4 Receiving a valid RR or REJ command or response
during "peer receiver busy" . 58
10.7.5.5 Appropriate supervisory response frame. 59
10.7.6 Waiting acknowledgement. 59
10.8 Re-establishment of multiple frame operation . 60
10.9 Exception condition reporting and recovery . 60
10.9.1 N(S) sequence error . 60
10.9.2 Invalid frame condition. 60
10.9.3 Frame rejection condition . 60
10.9.4 Multiple-assignment of TEI value. 61
10.10 List of system parameters. 61
10.10.1 Timer T200 . 61
10.10.2 Maximum number of retransmissions (N200) . 61
10.10.3 Maximum number of octets in an information field (N201). 61
10.10.4 Maximum number of transmission of the TEI identity request message
(N202). 62
10.10.5 Maximum number of outstanding I-frames (k) . 62
10.10.6 Timer T202 . 62
10.10.7 Layer 2 response time . 62
11 Layer 3 requirements. 62
11.1 Overview of call control . 62
11.1.1 Call states at the user side of the interface . 62
11.1.1.1 Null state (U0) . 62
11.1.1.2 Call initiated (U1). 63
11.1.1.3 Overlap sending (U2). 63
11.1.1.4 Outgoing call proceeding (U3) . 63
11.1.1.5 Call delivered (U4) . 63
11.1.1.6 Call present (U6). 63
11.1.1.7 Call received (U7) . 63
11.1.1.8 Connect request (U8). 63
11.1.1.9 Incoming call proceeding (U9) . 63
11.1.1.10 Active (U10) . 64
11.1.1.11 Disconnect request (U11) . 64
11.1.1.12 Disconnect indication (U12) . 64
11.1.1.13 Suspend request (U15). 64
11.1.1.14 Resume request (U17). 64
11.1.1.15 Release request (U19). 64
11.1.1.16 Overlap receiving (U25) . 64
11.1.2 Network call states. 64
11.1.2.1 Null state (N0) . 64
11.1.2.2 Call initiated (N1). 64
11.1.2.3 Overlap sending (N2). 65
11.1.2.4 Outgoing call proceeding (N3) . 65
11.1.2.5 Call delivered (N4) . 65
11.1.2.6 Call present (N6). 65
11.1.2.7 Call received (N7) . 65
11.1.2.8 Connect request (N8). 65
11.1.2.9 Incoming call proceeding (N9) . 65
11.1.2.10 Active (N10) . 65
11.1.2.11 Disconnect request (N11) . 66
11.1.2.12 Disconnect indication (N12) . 66
11.1.2.13 Suspend request (N15). 66
11.1.2.14 Resume request (N17). 66
11.1.2.15 Release request (N19). 66
11.1.2.16 Call abort (N22). 66
11.1.2.17 Overlap receiving (N25) . 66
11.1.3 States associated with the global call reference. 66

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TBR 4: November 1995
11.1.3.1 Call states at the user side of the interface .66
11.1.3.1.1 Null (Rest 0).66
11.1.3.1.2 Restart (Rest 2) .66
11.1.3.2 Call states at the network side of the interface.67
11.1.3.2.1 Null (Rest 0).67
11.1.3.2.2 Restart request (Rest 1) .67
11.2 Message functional definitions and content.67
11.2.1 Alerting .68
11.2.2 Call proceeding .69
11.2.3 Connect .70
11.2.4 Connect acknowledge.70
11.2.5 Disconnect.71
11.2.6 Information .71
11.2.7 Notify .72
11.2.8 Progress.72
11.2.9 Release .73
11.2.10 Release complete.73
11.2.11 Resume.74
11.2.12 Resume acknowledge.74
11.2.13 Resume reject .74
11.2.14 Setup .74
11.2.15 Setup acknowledge .76
11.2.16 Status .76
11.2.17 Status enquiry.77
11.2.18 Suspend .77
11.2.19 Suspend acknowledge .77
11.2.20 Suspend reject .77
11.2.21 Messages used with the global call reference.78
11.2.21.1 Restart .78
11.2.21.2 Restart acknowledge .79
11.3 General message format and information elements coding.79
11.3.1 Overview.79
11.3.2 Protocol discriminator.80
11.3.3 Call reference.80
11.3.4 Message type .81
11.3.5 Other information elements.82
11.3.5.1 Coding rules.82
11.3.5.1.1 Codeset 0.84
11.3.5.2 Extensions of codesets.84
11.3.5.3 Locking shift procedure .85
11.3.5.4 Non-locking shift procedure.86
11.3.5.5 Bearer capability .86
11.3.5.6 Call identity .93
11.3.5.7 Call state.94
11.3.5.8 Called party number .95
11.3.5.9 Called party subaddress.96
11.3.5.10 Cause .97
11.3.5.11 Channel identification .103
11.3.5.12 High Layer Compatibility.105
11.3.5.13 Low Layer Compatibility.107
11.3.5.14 Notification indicator .115
11.3.5.15 Progress indicator.115
11.3.5.16 Restart indicator.116
11.3.5.17 Sending complete.117
11.4 Circuit switched call control procedures .117
11.4.1 Call establishment at the originating interface.117
11.4.1.1 Call request.118
11.4.1.2 Overlap sending.118
11.4.1.3 Call proceeding.118
11.4.1.3.1 Call proceeding, en-bloc sending.118
11.4.1.3.2 Call proceeding, overlap sending.118
11.4.1.4 Call confirmation indication.119
11.4.1.5 Call connected.119

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TBR 4: November 1995
11.4.2 Call establishment at the destination interface . 119
11.4.2.1 Incoming call . 119
11.4.2.2 Address and compatibility checking. 119
11.4.2.2.1 Compatibility checking. 120
11.4.2.2.2 Address checking. 120
11.4.2.3 B-channel selection - destination . 120
11.4.2.3.1 SETUP message delivered by
point-to-point data link. 120
11.4.2.3.2 SETUP message delivered by
broadcast data link. . 121
11.4.2.4 Overlap receiving . 121
11.4.2.5 Call confirmation . 121
11.4.2.5.1 Response to en-bloc SETUP or
completion of overlap receiving. 121
11.4.2.6 Call accept . 122
11.4.2.7 Active indication . 122
11.4.3 Call clearing . 122
11.4.3.1 Terminology . 122
11.4.3.2 Exception conditions . 122
11.4.3.3 Clearing initiated by the user. 122
11.4.3.4 Clearing initiated by the network . 123
11.4.3.4.1 Clearing when tones/announcements
provided. 123
11.4.3.4.2 Clearing when tones/announcements
not provided. 123
11.4.3.4.3 Completion of clearing . 123
11.4.3.5 Clear collision. 124
11.4.4 Call rearrangements . 124
11.4.5 Call collisions . 124
11.4.6 Handling of error conditions. 124
11.4.6.1 Protocol discrimination error . 124
11.4.6.2 Call reference procedural errors . 125
11.4.6.3 Message type or message sequence errors. 125
11.4.6.4 Duplicated information elements. 126
11.4.6.5 Mandatory information element errors. 126
11.4.6.5.1 Mandatory information element
missing . 126
11.4.6.5.2 Mandatory information element
content error. 126
11.4.6.6 Non-mandatory information element errors . 127
11.4.6.6.1 Unrecognized information element . 127
11.4.6.6.2 Non-mandatory information element
content error. 128
11.4.6.7 Status enquiry procedure. 128
11.4.6.8 Receiving a STATUS message . 129
11.4.7 User notification procedure. 129
11.4.8 Restart procedure. 129
11.5 TE timers. 129
Annex A (normative): TBR Requirements Table (TBR-RT) . 130
A.1 Guidance for completion of the TBR-RT . 130
A.2 Layer 1 and overvoltage requirements TBR-RT. 130
A.3 Layer 2 TBR-RT. 132
A.4 Layer 3 TBR-RT. 134
Annex B (normative): Layer 1 tests . 136
B.1 Scope and general information. 136
B.1.1 Scope . 136

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TBR 4: November 1995
B.1.2 General information .136
B.1.2.1 Additional information to support the test.136
B.1.3 Connection of the simulator to the IUT .136
B.1.4 Connection of the IUT to ground.137
B.1.5 Environmental conditions.137
B.1.6 Pulse measurements.137
B.2 Specification at the output port.138
B.2.1 Waveform shape .138
B.2.1.1 Pulse shape and amplitude of a mark (pulse).138
B.2.1.2 Peak voltage of a space (no pulse).139
B.2.1.3 Ratio of the amplitudes of positive and negative pulses at the centre of
the pulse.140
B.2.1.4 Ratio of the widths of positive and negative pulses at the nominal half
amplitude.141
B.2.2 Impedance towards ground of the transmitter output .142
B.2.3 Bit rate when unsynchronized.143
B.2.4 Output jitter .144
B.2.5 HDB3 coding.146
B.3 Specification at the input port.147
B.3.1 Return loss.147
B.3.2 Immunity to attenuation and reflections .148
B.3.3 Minimum tolerance to jitter.149
B.3.4 Tolerable longitudinal voltage .150
B.3.5 Impedance towards ground of the receiver inputs.151
B.4 Frame structure.152
B.4.1 Generation of frame alignment word .153
B.4.2 CRC processing.154
B.5 Operational functions .156
B.5.1 States-matrix at the IUT user side .156
B.5.2 Frame alignment (without the test of CRC procedure) .157
B.5.3 CRC multiframe alignment.159
Annex C (normative): Layer 2 tests .161
C.1 Test case selection .161
C.2 Layer 2 test suite .162
Annex D (normative): Layer 3 tests .241
D.1 Test case selection .241
D.2 Layer 3 test suite .243
Annex E (informative): Protocol Implementation eXtra Information for Testing (PIXIT) .367
E.1 Introduction.367
E.2 References.367
E.3 Proforma structure and contents.367
E.4 Table/item identification.367
E.5 Guidance on completing the PIXIT .367
E.6 Environmental test conditions .368

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TBR 4: November 1995
E.7 Layer 1 PIXIT. 368
E.8 Layer 2 PIXIT. 371
E.9 Layer 3 PIXIT. 372
Annex F (informative): Justifications for the requirements in the TBR. 376
F.1 Principles applicable to the whole TBR . 376
F.1.1 General principles . 376
F.1.2 Requirements vs. definitions . 376
F.1.3 Error conditions . 376
F.1.4 General editori
...