ETSI ETS 300 007 ed.1 (1991-11)
T/S 46-50
Digitalno omrežje z integriranimi storitvami (ISDN) - Podpora ISDN za terminalsko opremo paketnega načina
General Information
Buy Standard
Standards Content (sample)
SLOVENSKI STANDARD
SIST ETS 300 007:1996
01-GHFHPEHU-1996
'LJLWDOQRRPUHåMH]LQWHJULUDQLPLVWRULWYDPL ,6'1 3RGSRUD,6'1]DWHUPLQDOVNR
RSUHPRSDNHWQHJDQDþLQDIntegrated Services Digital Network (ISDN); Support of packet-mode terminal equipment
by an ISDNTa slovenski standard je istoveten z: ETS 300 007 Edition 1
ICS:
33.080 Digitalno omrežje z Integrated Services Digital
integriranimi storitvami Network (ISDN)
(ISDN)
SIST ETS 300 007:1996 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------PSIST ETS 300 007:1996
---------------------- Page: 2 ----------------------
PSIST ETS 300 007:1996
UROPEAN ETS 300 007
ELECOMMUNICATION November 1991
TANDARD
Source: ETSI TC-SPS Reference: T/S 46-50
ICS: 33.080
ISDN, packet-mode
Key words:
Integrated Services Digital Network (ISDN);
Support of packet-mode terminal equipment by an ISDN
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 1991. All rights reserved.
New presentation - see History box
---------------------- Page: 3 ----------------------
PSIST ETS 300 007:1996
Page 2
ETS 300 007: November 1991
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.
---------------------- Page: 4 ----------------------PSIST ETS 300 007:1996
Page 3
ETS 300 007: November 1991
Contents
Foreword...........................................................................................................................................7
Introduction ........................................................................................................................................7
Normative references..........................................................................................................................8
1 Scope ....................................................................................................................................10
2 General service aspects ..........................................................................................................10
3 Reference configurations .........................................................................................................11
3.1 Configuration when accessing PSPDN services (Case A).............................................11
3.2 Configuration for the ISDN virtual circuit service (Case B).............................................13
4 Service aspects ......................................................................................................................16
4.1 Access to PSPDN services (Case A)..........................................................................16
4.1.1 Service characteristics............................................................................16
4.1.2 User access capabilities .........................................................................16
4.1.3 Basic rules.............................................................................................16
4.1.4 Notification classes.................................................................................17
4.2 Access to the ISDN virtual circuit service (Case B) ......................................................17
4.2.1 Service characteristics............................................................................17
4.2.2 User access capabilities .........................................................................17
4.2.2.1 Access through the B-Channel.........................................174.2.2.2 Access through the D-Channel.........................................18
4.2.3 Notification classes for incoming calls.......................................................18
4.2.3.1 No notification class ........................................................18
4.2.3.2 Conditional notification class ............................................19
4.2.3.3 Unconditional notification class.........................................19
4.2.3.4 Information mapping from the CCITT RecommendationX.25 incoming call packet to the ETS 300 102-1 message. 19
4.3 Compatibility checking ...............................................................................................19
5 Addressing and routing aspects................................................................................................20
5.1 Terminal interface selection........................................................................................20
5.2 Access to PSPDN services (Case A)..........................................................................20
5.2.1 Channel type selection............................................................................20
5.2.2 Addressing scheme for outgoing calls ......................................................20
5.3 Access to the ISDN virtual circuit service (Case B) ......................................................21
5.3.1 Channel type selection............................................................................21
5.3.2 Addressing scheme for outgoing calls ......................................................21
6 Interworking with dedicated networks .......................................................................................21
6.1 Circuit-mode access to PSPDN services (Case A).......................................................21
6.2 Access to PSPDNs via virtual circuit service (Case B)..................................................21
7 Packet communications at the S/T reference point.....................................................................22
7.1 Outgoing access.......................................................................................................22
7.1.1 Circuit-switched access to PSPDN services (Case A) ...............................23
7.1.2 Access to the ISDN virtual circuit service (Case B)....................................24
7.1.2.1 B-Channel......................................................................24
7.1.2.2 D-channel.......................................................................25
7.2 Incoming access .......................................................................................................25
7.2.1 Access from PSPDN services (Case A) ...................................................25
7.2.1.1 General .........................................................................25
7.2.1.2 Channel negotiation.........................................................26
7.2.2 Access from the ISDN virtual circuit service (Case B)................................27
---------------------- Page: 5 ----------------------PSIST ETS 300 007:1996
Page 4
ETS 300 007: November 1991
7.2.2.1 B-Channel ......................................................................27
7.2.2.2 D-Channel ......................................................................28
7.2.2.3 Call offering....................................................................28
7.3 Virtual call establishment and release..........................................................................32
7.3.1 Link layer establishment and release........................................................32
7.3.2 Packet layer virtual call SETUP and RELEASE .........................................33
7.4 Call clearing..............................................................................................................33
7.4.1 B-Channel..............................................................................................33
7.4.2 D-Channel..............................................................................................34
7.4.3 Additional error handling information.........................................................34
7.4.4 Cause mappings.....................................................................................35
7.4.4.1 Access to/from PSPDN services (Case A)........................357.4.4.2 Access to/from the ISDN virtual circuit service (Case B) ....35
7.5 Access collision.........................................................................................................35
8 Terminal adaptor functionalities.................................................................................................39
8.1 General ....................................................................................................................39
8.2 Physical interfaces ....................................................................................................40
8.3 Access through the B-channel ....................................................................................40
8.3.1 General .................................................................................................40
8.3.2 Rate adaption ........................................................................................40
8.3.3 Signalling ...............................................................................................41
8.3.3.1 Outgoing call ..................................................................41
8.3.3.2 Incoming call ..................................................................46
8.3.3.3 Call clearing ...................................................................46
8.3.4 Synchronisation ......................................................................................48
8.4 Access through the D-Channel....................................................................................48
8.4.1 General .................................................................................................48
8.4.2 LAPB-LAPD mapping..............................................................................48
8.4.2.1 Mapping by full link layer termination ................................48
8.4.2.2 Mapping by minimum link layer termination........................508.4.3 Signalling ...............................................................................................50
8.4.3.1 Outgoing call ..................................................................50
8.4.3.2 Incoming call ..................................................................51
8.4.3.3 Data link disconnection....................................................52
8.5 Access through the B- and D- channel.........................................................................52
8.5.1 General .................................................................................................52
8.5.2 Outgoing call..........................................................................................53
8.5.3 Incoming call..........................................................................................53
8.6 Test loops ................................................................................................................53
8.6.1 Test loops for TA with access through the B-channel.................................53
8.6.1.1 Test loop reference configuration.....................................538.6.1.2 Test loop characteristics .................................................54
8.6.1.3 Loop activation/deactivation mechanism............................548.6.1.4 Coding of activation/deactivation control messages ...........54
Appendix.................I (informative): B-channel TA acting on layer 2 and 3 of CCITT Recommendation X.25 56
I.1 Introduction.............................................................................................................................56
I.2 Call control..............................................................................................................................56
I.2.1 Idle phase.................................................................................................................57
I.2.1.1 Transferring to the establishment phase...................................................57
I.2.2 Establishment phase..................................................................................................58
I.2.2.1 Outgoing call..........................................................................................58
I.2.2.2 Incoming call..........................................................................................59
I.2.2.3 Changing to the data transfer phase ........................................................60
I.2.3 Data transfer phase...................................................................................................60
I.2.3.1 Transferring to the clearing phase....................................60I.2.4 Clearing phase ...............................................................61
---------------------- Page: 6 ----------------------PSIST ETS 300 007:1996
Page 5
ETS 300 007: November 1991
I.2.4.1 Detection by the user..............................................................................61
I.2.4.2 Detection by the network ........................................................................62
Appendix II (informative): Interconnection of packet-mode TE2s which use the circuit-mode bearer
service of the ISDN .................................................................................................................63
Appendix III (informative): Example message flow diagrams and example conditions for cause mapping . 64
III.1 Example message flow diagrams .............................................................................................64
III.1.1 Key to the figures......................................................................................................64
III.1.2 Example message flow diagrams ...............................................................................66
III.2 Example conditions for cause mapping......................................................................................73
Appendix IV (informative): D-channel TAs requiring full protocol termination in the TA.............................77
IV.1 Introduction.............................................................................................................................77
IV.2 Call control .............................................................................................................................77
IV.2.1 Idle phase ................................................................................................................77
IV.2.1.1 Transferring to the establishment phase...................................................78
IV.2.2 Establishment phase ................................................................................................. 79
IV.2.2.1 Outgoing call initiated via a call request packet or an I frame..................... 79
IV.2.2.2 Incoming call..........................................................................................80
IV.2.3 Data transfer phase .................................................................................................. 80
IV.2.3.1 Transferring to the clearing phase............................................................81
IV.2.4 Clearing phase..........................................................................................................81
IV.2.4.1 Detection by the PH................................................................................82
Annex A (informative): States applicable to packet mode access connection (case B services) ..........83
A.1 Access connection states at the user side of the interface..........................................................83
A.1.1 Null state (U0)...........................................................................................................83
A.1.2 Call initiated (U1).......................................................................................................83
A.1.3 Outgoing call proceeding (U3)....................................................................................83
A.1.4 Call present (U6).......................................................................................................83
A.1.5 Call received (U7) .....................................................................................................83
A.1.6 Connect request (U8) ................................................................................................83
A.1.7 Incoming call proceeding (U9) ....................................................................................83
A.1.8 Active (U10)..............................................................................................................83
A.1.9 Disconnect request (U11) ..........................................................................................84
A.1.10 Disconnect indication (U12)........................................................................................84
A.1.11 Release request (U19) .............................................................................................. 84
A.2 Access connection states at the network side of the interface.....................................................84
A.2.1 Null state (N0)...........................................................................................................84
A.2.2 Call initiated (N1).......................................................................................................84
A.2.3 Outgoing call proceeding (N3) ....................................................................................84
A.2.4 Call present (N6).......................................................................................................84
A.2.5 Call received (N7) .....................................................................................................84
A.2.6 Connect request (N8) ................................................................................................84
A.2.7 Incoming call proceeding (N9) ....................................................................................84
A.2.8 Active (N10)..............................................................................................................85
A.2.9 Disconnect request (N11) ..........................................................................................85
A.2.10 Disconnect indication (N12)........................................................................................85
A.2.11 Release request (N19) .............................................................................................. 85
A.2.12 Call Abort (N22)........................................................................................................ 85
Annex B (normative): Messages for control of packet-mode access connections.............................86
---------------------- Page: 7 ----------------------PSIST ETS 300 007:1996
Page 6
ETS 300 007: November 1991
B.1 Alerting...................................................................................................................................86
B.2 Call proceeding .......................................................................................................................87
B.3 Connect..................................................................................................................................88
B.4 Connect acknowledge..............................................................................................................88
B.5 Disconnect..............................................................................................................................89
B.6 Progress.................................................................................................................................89
B.7 Release..................................................................................................................................90
B.8 Release complete....................................................................................................................91
B.9 Setup .....................................................................................................................................92
B.10 Status.....................................................................................................................................94
B.11 Status enquiry.........................................................................................................................94
Annex C (normative): Information elements for the control of packet-mode access connections ........95
C.1 Protocol discriminator ..............................................................................................................95
C.2 Call reference .........................................................................................................................95
C.3 Message type .........................................................................................................................95
C.4 Other information elements ......................................................................................................95
C.5 Redirecting number..................................................................................................................97
Annex D (informative): Example of ISDN CCITT Recommendation X.25 packet-mode bearer service
access on the D-channel through a NT2 with frame handling functions...........100
History ...........................................................................................................................................103
---------------------- Page: 8 ----------------------PSIST ETS 300 007:1996
Page 7
ETS 300 007: November 1991
Foreword
This European Telecommunication Standard (ETS) has been produced by the Signalling Protocols &
Switching (SPS) Technical Committee of the European Telecommunications Standards Institute (ETSI).
IntroductionThis standard was drafted on the basis of CCITT Recommendation X.31 [15], incorporating also
enhancements made to that document during early years of the study period 1988-1992.
As a consequence this document:(a) incorporates service aspects useful to understand the context of this standard;
(b) does not necessarily fully align with the available stage 1 description, which is still under
preparation. Therefore, several stage 1 aspects may not be covered here or arecovered in a different manner;
(c) is not based on a stage 2 description as there was no stage 2 draft ETS available;
(d) does not necessarily seek alignment with draft ETS 300 099 [25] since it introduces
limitations when the Packet Handler (PH) is remotely located;(e) includes a description of terminal adaptor functions which are required to support a
CCITT Recommendation X.25 [14] DTE (Data Terminal Equipment) which is normallyoutside the scope of any comparable stage 3 access protocol specification.
In producing this draft standard, the following considerations have been taken into account:
(a) DTEs conforming to CCITT Recommendation X.25 [14] shall be used, at least during
the evolution of Integrated Services Digital Networks (ISDN) and possibly thereafter, in
conjunction with Packet Mode Bearer Services (PMBS) provided on an ISDN or via an
ISDN using circuit switched bearer service to Packet Switched Public Data Networks
(PSPDNs);(b) the packet mode TE1s conforming to ETS 300 012 [23] and ETS 300 011 [22] at
reference points S and T shall be used in conjunction with PMBS provided by an ISDN
or via an ISDN using circuit switched bearer service to PSPDNs;(c) the functions and protocol defined by this draft ETS shall allow the provision of the
network service defined in CCITT Recommendation X.213 [18];(d) the interworking function between an ISDN and a PSPDN is defined in CCITT
Recommendation X.325 [21];
(e) the demand access to PSPDNs is defined in CCITT Recommendation X.32 [16];
(f) the dedicated access to PSPDNs is defined in CCITT Recommendation X.25 [14].
---------------------- Page: 9 ----------------------
PSIST ETS 300 007:1996
Page 8
ETS 300 007: November 1991
Normative references
This ETS incorporates, by dated or undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text and the publications are listed
hereafter. For dated references, subsequent amendments to, or revisions of any of these publications
apply to this ETS only when incorporated in it by amendment or revision. For undated references the latest
edition of the publication referred to applies.[1] CCITT Recommendation E.163 (1988): "Numbering plan for the international
telephone service".
[2] CCITT Recommendation E.164 (1988): "Numbering plan for the ISDN era".
[3] CCITT Recommendation E.166 (1988): "Numbering plan interworking in the
ISDN era".
[4] CCITT Recommendation I.130 (1988): "Method for the characterisation of
telecommunication services supported by an ISDN and network capabilities of an
ISDN".
[5] CCITT Recommendation I.330 (1988): "ISDN Numbering and addressing
principles".
[6] CCITT Recommendation I.411 (1988): "ISDN user-network interfaces -
Reference configurations".
[7] CCITT Recommendation I.430 (1988): "Basic user-network interface - Layer 1
specification".
[8] CCITT Recommendation Q.931 (1988): "ISDN user-network interface layer 3
specification for basic call control".
[9] CCITT Recommendation V.25 bis (1988): "Automatic calling and/or answering
equipment on the General Switched Telephone Network (GSTN) using the 100-
series interchange circuits".
[10] CCITT Recommendation X.1 (1988): "International user classes of service in
public data networks and Integrated Services Digital Networks (ISDNs)".
[11] CCITT Recommendation X.10 (1988): "Categories of access for Data Terminal
Equipment (DTE) to public data transmission services".
[12] CCITT Recommendation X.21 (1988): "Interface between Data Terminal
Equipment (DTE) and Data Circuit-terminating Equipment (DCE) for synchronous
operation on public data networks".
[13] CCITT Recommendation X.21 bis (1988): "Use on public data networks of Data
Terminal Equipment (DTE) which is designed for interfacing to synchronous V-
series modems".
[14] CCITT Recommendation X.25 (1988): "Interface between Data Terminal
Equipment (DTE) and Data Circuit-terminating Equipment (DCE) for terminals
operating in the packet mode and connected to public data networks by
dedicated circuit".
[15] CCITT Recommendation X.31 (1988): "Support of packet mode terminal
equipment by an ISDN".
---------------------- Page: 10 ----------------------
PSIST ETS 300 007:1996
Page 9
ETS 300 007: November 1991
[16] CCITT Recommendation X.32 (1988): "Interface between Data Terminal
Equipment (DTE) and Data Circuit-terminating Equipment (DCE) for terminals
operating in the packet mode and accessing a packet switched public data
network through a public switched telephone network or an integrated services
digital network or a circuit switched public data network".
[17] CCITT Recommendation X.121 (1988): "International numbering plan for public
data networks".
[18] CCITT Recommendation X.213 (1988): "Networks service definition for open
systems interconnection for CCITT applications".
[19] CCITT Recommendation X.300 (1988): "General principles for interworking
between public networks, and between public networks and other networks for
the provision of data transmission services".
[20] CCITT Recommendation X.320 (1988): "General arrangements for interworking
between Integrated Services Digital Networks (ISDNs) for the provision of data
transmission services".
[21] CCITT Recommendation X.325 (1988): "General arrangements for interworking
between Packet Switched Public Data Networks (PSPDNs) and Integrated
Services Digital Networks (ISDNs) for the provision of data transmission
services".
[22] ETS 300 011: "Integrated Services Digital Network (ISDN); Primary rate user-
network interface Layer 1 specification and test principles".[23] ETS 300 012: "Integrated Services Digital Network (ISDN); Basic user-network
interface Layer 1 specification and test principles".[24] ETS 300 058 (1991): "Integrated Services Digital Network (ISDN); Call Waiting
(CW) supplementary service Digital Subscriber Signalling System No. one(DSS1) protocol".
[25] ETS 300 099: "Integrated Services Digital Network (ISDN); Specification of the
Packet Handler Access Point Interface (PHI)".[26] ETS 300 102-1 (1990): "Integrated Services Digital Network (ISDN); User-
network interface layer 3 Specifications for basic call control".
[27] ETS 300 103 (1990): "Integrated Services Digital Network (ISDN); Support of
X.21, X.21 bis and X.20 bis based Data Terminal Equipments (DTEs) by an
ISDN Synchronous and asynchronous terminal adaption functions".
[28] ETS 300 125 (1991): "Integrated Services Digital Network (ISDN); User-network
interface data link layer specifications Application of CCITT RecommendationsQ.920/I.440 and Q.921/I.441".
---------------------- Page: 11 ----------------------
PSIST ETS 300 007:1996
Page 10
ETS 300 007: November 1991
1 Scope
This stage three standard defines user-network signalling requirements to support:
a) the application of the ISDN circuit mode 8 kHz structured 64 kbit/s unrestricted bearer
service category for access to a Packet Switched Public Data Network (PSPDN);...
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Integrated Services Digital Network (ISDN); Support of packet-mode terminal equipment by an ISDN33.080Digitalno omrežje z integriranimi storitvami (ISDN)Integrated Services Digital Network (ISDN)ICS:Ta slovenski standard je istoveten z:ETS 300 007 Edition 1PSIST ETS 300 007:1996en01-oktober-1996PSIST ETS 300 007:1996SLOVENSKI
STANDARDPSIST ETS 300 007:1996
EUROPEANETS 300 007TELECOMMUNICATIONNovember 1991STANDARDSource: ETSI TC-SPSReference: T/S 46-50ICS:33.080Key words:ISDN, packet-modeIntegrated Services Digital Network (ISDN);Support of packet-mode terminal equipment by an ISDNETSIEuropean Telecommunications Standards InstituteETSI SecretariatPostal address: F-06921 Sophia Antipolis CEDEX - FRANCEOffice address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCEX.400: c=fr, a=atlas, p=etsi, s=secretariat - Internet: secretariat@etsi.frTel.: +33 92 94 42 00 - Fax: +33 93 65 47 16Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright andthe foregoing restriction extend to reproduction in all media.© European Telecommunications Standards Institute 1991. All rights reserved.PSIST ETS 300 007:1996New presentation - see History box
Page 2ETS 300 007: November 1991Whilst 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.PSIST ETS 300 007:1996
Page 3ETS 300 007: November 1991ContentsForeword...........................................................................................................................................7Introduction........................................................................................................................................7Normative references..........................................................................................................................81Scope....................................................................................................................................102General service aspects..........................................................................................................103Reference configurations.........................................................................................................113.1Configuration when accessing PSPDN services (Case A).............................................113.2Configuration for the ISDN virtual circuit service (Case B).............................................134Service aspects......................................................................................................................164.1Access to PSPDN services (Case A)..........................................................................164.1.1Service characteristics............................................................................164.1.2User access capabilities.........................................................................164.1.3Basic rules.............................................................................................164.1.4Notification classes.................................................................................174.2Access to the ISDN virtual circuit service (Case B)......................................................174.2.1Service characteristics............................................................................174.2.2User access capabilities.........................................................................174.2.2.1Access through the B-Channel.........................................174.2.2.2Access through the D-Channel.........................................184.2.3Notification classes for incoming calls.......................................................184.2.3.1No notification class........................................................184.2.3.2Conditional notification class............................................194.2.3.3Unconditional notification class.........................................194.2.3.4Information mapping from the CCITT RecommendationX.25 incoming call packet to the ETS 300 102-1 message.194.3Compatibility checking...............................................................................................195Addressing and routing aspects................................................................................................205.1Terminal interface selection........................................................................................205.2Access to PSPDN services (Case A)..........................................................................205.2.1Channel type selection............................................................................205.2.2Addressing scheme for outgoing calls......................................................205.3Access to the ISDN virtual circuit service (Case B)......................................................215.3.1Channel type selection............................................................................215.3.2Addressing scheme for outgoing calls......................................................216Interworking with dedicated networks.......................................................................................216.1Circuit-mode access to PSPDN services (Case A).......................................................216.2Access to PSPDNs via virtual circuit service (Case B)..................................................217Packet communications at the S/T reference point.....................................................................227.1Outgoing access.......................................................................................................227.1.1Circuit-switched access to PSPDN services (Case A)...............................237.1.2Access to the ISDN virtual circuit service (Case B)....................................247.1.2.1B-Channel......................................................................247.1.2.2D-channel.......................................................................257.2Incoming access.......................................................................................................257.2.1Access from PSPDN services (Case A)...................................................257.2.1.1General.........................................................................257.2.1.2Channel negotiation.........................................................267.2.2Access from the ISDN virtual circuit service (Case B)................................27PSIST ETS 300 007:1996
Page 4ETS 300 007: November 19917.2.2.1B-Channel......................................................................277.2.2.2D-Channel......................................................................287.2.2.3Call offering....................................................................287.3Virtual call establishment and release..........................................................................327.3.1Link layer establishment and release........................................................327.3.2Packet layer virtual call SETUP and RELEASE.........................................337.4Call clearing..............................................................................................................337.4.1B-Channel..............................................................................................337.4.2D-Channel..............................................................................................347.4.3Additional error handling information.........................................................347.4.4Cause mappings.....................................................................................357.4.4.1Access to/from PSPDN services (Case A)........................357.4.4.2Access to/from the ISDN virtual circuit service (Case B)....357.5Access collision.........................................................................................................358Terminal adaptor functionalities.................................................................................................398.1General....................................................................................................................398.2Physical interfaces....................................................................................................408.3Access through the B-channel....................................................................................408.3.1General.................................................................................................408.3.2Rate adaption........................................................................................408.3.3Signalling...............................................................................................418.3.3.1Outgoing call..................................................................418.3.3.2Incoming call..................................................................468.3.3.3Call clearing...................................................................468.3.4Synchronisation......................................................................................488.4Access through the D-Channel....................................................................................488.4.1General.................................................................................................488.4.2LAPB-LAPD mapping..............................................................................488.4.2.1Mapping by full link layer termination................................488.4.2.2Mapping by minimum link layer termination........................508.4.3Signalling...............................................................................................508.4.3.1Outgoing call..................................................................508.4.3.2Incoming call..................................................................518.4.3.3Data link disconnection....................................................528.5Access through the B- and D- channel.........................................................................528.5.1General.................................................................................................528.5.2Outgoing call..........................................................................................538.5.3Incoming call..........................................................................................538.6Test loops................................................................................................................538.6.1Test loops for TA with access through the B-channel.................................538.6.1.1Test loop reference configuration.....................................538.6.1.2Test loop characteristics.................................................548.6.1.3Loop activation/deactivation mechanism............................548.6.1.4Coding of activation/deactivation control messages...........54Appendix.................I (informative): B-channel TA acting on layer 2 and 3 of CCITT Recommendation X.2556I.1Introduction.............................................................................................................................56I.2Call control..............................................................................................................................56I.2.1Idle phase.................................................................................................................57I.2.1.1Transferring to the establishment phase...................................................57I.2.2Establishment phase..................................................................................................58I.2.2.1Outgoing call..........................................................................................58I.2.2.2Incoming call..........................................................................................59I.2.2.3Changing to the data transfer phase........................................................60I.2.3Data transfer phase...................................................................................................60I.2.3.1Transferring to the clearing phase....................................60I.2.4Clearing phase...............................................................61PSIST ETS 300 007:1996
Page 5ETS 300 007: November 1991I.2.4.1Detection by the user..............................................................................61I.2.4.2Detection by the network........................................................................62Appendix II (informative): Interconnection of packet-mode TE2s which use the circuit-mode bearerservice of the ISDN.................................................................................................................63Appendix III (informative): Example message flow diagrams and example conditions for cause mapping.64III.1Example message flow diagrams.............................................................................................64III.1.1Key to the figures......................................................................................................64III.1.2Example message flow diagrams...............................................................................66III.2Example conditions for cause mapping......................................................................................73Appendix IV (informative): D-channel TAs requiring full protocol termination in the TA.............................77IV.1Introduction.............................................................................................................................77IV.2Call control.............................................................................................................................77IV.2.1Idle phase................................................................................................................77IV.2.1.1Transferring to the establishment phase...................................................78IV.2.2Establishment phase.................................................................................................79IV.2.2.1Outgoing call initiated via a call request packet or an I frame.....................79IV.2.2.2Incoming call..........................................................................................80IV.2.3Data transfer phase..................................................................................................80IV.2.3.1Transferring to the clearing phase............................................................81IV.2.4Clearing phase..........................................................................................................81IV.2.4.1Detection by the PH................................................................................82Annex A (informative):States applicable to packet mode access connection (case B services)..........83A.1Access connection states at the user side of the interface..........................................................83A.1.1Null state (U0)...........................................................................................................83A.1.2Call initiated (U1).......................................................................................................83A.1.3Outgoing call proceeding (U3)....................................................................................83A.1.4Call present (U6).......................................................................................................83A.1.5Call received (U7).....................................................................................................83A.1.6Connect request (U8)................................................................................................83A.1.7Incoming call proceeding (U9)....................................................................................83A.1.8Active (U10)..............................................................................................................83A.1.9Disconnect request (U11)..........................................................................................84A.1.10Disconnect indication (U12)........................................................................................84A.1.11Release request (U19)..............................................................................................84A.2Access connection states at the network side of the interface.....................................................84A.2.1Null state (N0)...........................................................................................................84A.2.2Call initiated (N1).......................................................................................................84A.2.3Outgoing call proceeding (N3)....................................................................................84A.2.4Call present (N6).......................................................................................................84A.2.5Call received (N7).....................................................................................................84A.2.6Connect request (N8)................................................................................................84A.2.7Incoming call proceeding (N9)....................................................................................84A.2.8Active (N10)..............................................................................................................85A.2.9Disconnect request (N11)..........................................................................................85A.2.10Disconnect indication (N12)........................................................................................85A.2.11Release request (N19)..............................................................................................85A.2.12Call Abort (N22)........................................................................................................85Annex B (normative):Messages for control of packet-mode access connections.............................86PSIST ETS 300 007:1996
Page 6ETS 300 007: November 1991B.1Alerting...................................................................................................................................86B.2Call proceeding.......................................................................................................................87B.3Connect..................................................................................................................................88B.4Connect acknowledge..............................................................................................................88B.5Disconnect..............................................................................................................................89B.6Progress.................................................................................................................................89B.7Release..................................................................................................................................90B.8Release complete....................................................................................................................91B.9Setup.....................................................................................................................................92B.10Status.....................................................................................................................................94B.11Status enquiry.........................................................................................................................94Annex C (normative):Information elements for the control of packet-mode access connections........95C.1Protocol discriminator..............................................................................................................95C.2Call reference.........................................................................................................................95C.3Message type.........................................................................................................................95C.4Other information elements......................................................................................................95C.5Redirecting number..................................................................................................................97Annex D (informative):Example of ISDN CCITT Recommendation X.25 packet-mode bearer serviceaccess on the D-channel through a NT2 with frame handling functions...........100History...........................................................................................................................................103PSIST ETS 300 007:1996
Page 7ETS 300 007: November 1991ForewordThis European Telecommunication Standard (ETS) has been produced by the Signalling Protocols &Switching (SPS) Technical Committee of the European Telecommunications Standards Institute (ETSI).IntroductionThis standard was drafted on the basis of CCITT Recommendation X.31 [15], incorporating alsoenhancements made to that document during early years of the study period 1988-1992.As a consequence this document:(a)incorporates service aspects useful to understand the context of this standard;(b)does not necessarily fully align with the available stage 1 description, which is still underpreparation. Therefore, several stage 1 aspects may not be covered here or arecovered in a different manner;(c)is not based on a stage 2 description as there was no stage 2 draft ETS available;(d)does not necessarily seek alignment with draft ETS 300 099 [25] since it introduceslimitations when the Packet Handler (PH) is remotely located;(e)includes a description of terminal adaptor functions which are required to support aCCITT Recommendation X.25 [14] DTE (Data Terminal Equipment) which is normallyoutside the scope of any comparable stage 3 access protocol specification.In producing this draft standard, the following considerations have been taken into account:(a)DTEs conforming to CCITT Recommendation X.25 [14] shall be used, at least duringthe evolution of Integrated Services Digital Networks (ISDN) and possibly thereafter, inconjunction with Packet Mode Bearer Services (PMBS) provided on an ISDN or via anISDN using circuit switched bearer service to Packet Switched Public Data Networks(PSPDNs);(b)the packet mode TE1s conforming to ETS 300 012 [23] and ETS 300 011 [22] atreference points S and T shall be used in conjunction with PMBS provided by an ISDNor via an ISDN using circuit switched bearer service to PSPDNs;(c)the functions and protocol defined by this draft ETS shall allow the provision of thenetwork service defined in CCITT Recommendation X.213 [18];(d)the interworking function between an ISDN and a PSPDN is defined in CCITTRecommendation X.325 [21];(e)the demand access to PSPDNs is defined in CCITT Recommendation X.32 [16];(f)the dedicated access to PSPDNs is defined in CCITT Recommendation X.25 [14].PSIST ETS 300 007:1996
Page 8ETS 300 007: November 1991Normative referencesThis ETS incorporates, by dated or undated reference, provisions from other publications.
Thesenormative references are cited at the appropriate places in the text and the publications are listedhereafter.
For dated references, subsequent amendments to, or revisions of any of these publicationsapply to this ETS only when incorporated in it by amendment or revision. For undated references the latestedition of the publication referred to applies.[1]CCITT Recommendation E.163 (1988): "Numbering plan for the internationaltelephone service".[2]CCITT Recommendation E.164 (1988): "Numbering plan for the ISDN era".[3]CCITT Recommendation E.166 (1988): "Numbering plan interworking in theISDN era".[4]CCITT Recommendation I.130 (1988): "Method for the characterisation oftelecommunication services supported by an ISDN and network capabilities of anISDN".[5]CCITT Recommendation I.330 (1988): "ISDN Numbering and addressingprinciples".[6]CCITT Recommendation I.411 (1988): "ISDN user-network interfaces -Reference configurations".[7]CCITT Recommendation I.430 (1988): "Basic user-network interface - Layer 1specification".[8]CCITT Recommendation Q.931 (1988): "ISDN user-network interface layer 3specification for basic call control".[9]CCITT Recommendation V.25 bis (1988): "Automatic calling and/or answeringequipment on the General Switched Telephone Network (GSTN) using the 100-series interchange circuits".[10]CCITT Recommendation X.1 (1988): "International user classes of service inpublic data networks and Integrated Services Digital Networks (ISDNs)".[11]CCITT Recommendation X.10 (1988): "Categories of access for Data TerminalEquipment (DTE) to public data transmission services".[12]CCITT Recommendation X.21 (1988): "Interface between Data TerminalEquipment (DTE) and Data Circuit-terminating Equipment (DCE) for synchronousoperation on public data networks".[13]CCITT Recommendation X.21 bis (1988): "Use on public data networks of DataTerminal Equipment (DTE) which is designed for interfacing to synchronous V-series modems".[14]CCITT Recommendation X.25 (1988): "Interface between Data TerminalEquipment (DTE) and Data Circuit-terminating Equipment (DCE) for terminalsoperating in the packet mode and connected to public data networks bydedicated circuit".[15]CCITT Recommendation X.31 (1988): "Support of packet mode terminalequipment by an ISDN".PSIST ETS 300 007:1996
Page 9ETS 300 007: November 1991[16]CCITT Recommendation X.32 (1988): "Interface between Data TerminalEquipment (DTE) and Data Circuit-terminating Equipment (DCE) for terminalsoperating in the packet mode and accessing a packet switched public datanetwork through a public switched telephone network or an integrated servicesdigital network or a circuit switched public data network".[17]CCITT Recommendation X.121 (1988): "International numbering plan for publicdata networks".[18]CCITT Recommendation X.213 (1988): "Networks service definition for opensystems interconnection for CCITT applications".[19]CCITT Recommendation X.300 (1988): "General principles for interworkingbetween public networks, and between public networks and other networks forthe provision of data transmission services".[20]CCITT Recommendation X.320 (1988): "General arrangements for interworkingbetween Integrated Services Digital Networks (ISDNs) for the provision of datatransmission services".[21]CCITT Recommendation X.325 (1988): "General arrangements for interworkingbetween Packet Switched Public Data Networks (PSPDNs) and IntegratedServices Digital Networks (ISDNs) for the provision of data transmissionservices".[22]ETS 300 011: "Integrated Services Digital Network (ISDN); Primary rate user-network interface Layer 1 specification and test principles".[23]ETS 300 012: "Integrated Services Digital Network (ISDN); Basic user-networkinterface Layer 1 specification and test principles".[24]ETS 300 058 (1991): "Integrated Services Digital Network (ISDN); Call Waiting(CW) supplementary service Digital Subscriber Signalling System No. one(DSS1) protocol".[25]ETS 300 099: "Integrated Services Digital Network (ISDN); Specification of thePacket Handler Access Point Interface (PHI)".[26]ETS 300 102-1 (1990): "Integrated Services Digital Network (ISDN); User-network interface layer 3 Specifications for basic call control".[27]ETS 300 103 (1990): "Integrated Services Digital Network (ISDN); Support ofX.21, X.21 bis and X.20 bis based Data Terminal Equipments (DTEs) by anISDN Synchronous and asynchronous terminal adaption functions".[28]ETS 300 125 (1991): "Integrated Services Digital Network (ISDN); User-networkinterface data link layer specifications Application of CCITT RecommendationsQ.920/I.440 and Q.921/I.441".PSIST ETS 300 007:1996
Page 10ETS 300 007: November 19911ScopeThis stage three standard defines user-network signalling requirements to support:a)the application of the ISDN circuit mode 8 kHz structured 64 kbit/s unrestricted bearerservice category for access to a Packet Switched Public Data Network (PSPDN);b)the ISDN packet mode bearer services (both B and D channels);for the pan-European Integrated Services Digital Network (ISDN) as provided by European publictelecommunications operators at the T reference point or coincident S and T reference point (as defined inCCITT Recommendation I.411 [6], by means of the Digital Subscriber Signalling System number one(DSS1). Stage three identifies the protocols and switching functions required to support telecommunicationservices (see CCITT Recommendation I.130 [4]).In order to aid the understanding and the interpretation of the signalling and protocol requirements andspecifications, this standard also includes:-reference configurations aiming at providing guidance on the allocation of functionality inan ISDN supporting the above services;-a summary of the service aspects that may be expected from an ISDN conforming tothis standard.This standard also specifies the mapping from the coincident S and T reference point to the R referencepoint, using a terminal adaptor to support existing X.25 DTE's.This standard has been written to support cases a) and b) at the coincident S and T reference point. Inaddition the access protocol provides the capability to support cases a) and b) also at the T referencepoint where the services are offered to the user via a private ISDN.The mapping to an S reference point or R reference point via a private IS
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.