SIST ETS 300 813 E1:2003

Digital Video Broadcasting (DVB); DVB interfaces to Plesiochronous Digital Hierarchy (PDH) networks

Interfaces to Plesiochronous Digital Hierarchy (PDH) networks.

Digitalna videoradiodifuzija (DVB) – Vmesniki DVB do omrežij pleziohrone digitalne hierarhije (PDH)

General Information

• Status: Published
• Publication Date: 30-Nov-2003
• ICS: 33.170 - Television and radio broadcasting
• Technical Committee: SS EIT - Technical Board for the electrotechnical, information technology and telecommunications fields
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Dec-2003
• Due Date: 01-Dec-2003
• Completion Date: 01-Dec-2003
• Ref Project: ETSI ETS 300 813 ed.1 (1997-12) - Digital Video Broadcasting (DVB); DVB interfaces to Plesiochronous Digital Hierarchy (PDH) networks

Standards Content (Sample)

SLOVENSKI STANDARD
SIST ETS 300 813 E1:2003
01-december-2003
Digitalna videoradiodifuzija (DVB) – Vmesniki DVB do omrežij pleziohrone
digitalne hierarhije (PDH)
Digital Video Broadcasting (DVB); DVB interfaces to Plesiochronous Digital Hierarchy
(PDH) networks
Ta slovenski standard je istoveten z: ETS 300 813 Edition 1
ICS:
33.170 Televizijska in radijska Television and radio
difuzija broadcasting
SIST ETS 300 813 E1:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST ETS 300 813 E1:2003

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SIST ETS 300 813 E1:2003
EUROPEAN ETS 300 813
TELECOMMUNICATION December 1997
STANDARD
Source: EBU/CENELEC/ETSI JTC Reference: DE/JTC-DVB-28
ICS: 33.020
Key words: DVB, broadcasting, digital, video, PDH, TV
European Broadcasting Union Union Européenne de Radio-Télévision
EBU
UER
Digital Video Broadcasting (DVB);
DVB interfaces to Plesiochronous Digital Hierarchy (PDH)
networks
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
Postal address: F-06921 Sophia Antipolis CEDEX - FRANCE
Office address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
X.400: c=fr, a=atlas, p=etsi, s=secretariat - Internet: [e-mail]
Tel.: [phone] - Fax: [phone]
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 1997.
© European Broadcasting Union 1997.
All rights reserved.

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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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Contents
Foreword .5
1 Scope .7
2 Normative references.7
3 Definitions and abbreviations .8
3.1 Definitions .8
3.2 Abbreviations .8
4 Baseline specification.9
4.1 MPEG Physical Interface (MPI) .11
4.1.1 Signal processing in the transmitter .11
4.1.2 Signal processing in the receiver .13
4.2 MPEG/ATM Adaptation (MAA) .14
4.2.1 Signal processing in the transmitter .15
4.2.2 Signal processing in the receiver .16
4.3 Virtual Path Entity (VPE).17
4.3.1 Signal processing in the transmitter .18
4.3.2 Signal processing in the receiver .18
4.4 Virtual Path Multiplexing Entity (VPME).18
4.4.1 Signal processing in the transmitter .19
4.4.2 Signal processing in the receiver .20
4.5 PDH Path Termination (PPT) .21
4.5.1 Path termination 1 544 kbit/s.21
4.5.1.1 Signal processing in the transmitter .22
4.5.1.2 Signal processing in the receiver.22
4.5.2 Path termination 2 048 kbit/s.23
4.5.2.1 Signal processing in the transmitter .24
4.5.2.2 Signal processing in the receiver.25
4.5.3 Path termination 6 312 kbit/s.27
4.5.3.1 Signal processing in the transmitter .27
4.5.3.2 Signal processing in the receiver.28
4.5.4 Path termination 8 448 kbit/s.29
4.5.4.1 Signal processing in the transmitter .30
4.5.4.2 Signal processing in the receiver.31
4.5.5 Path termination 34 368 kbit/s.32
4.5.5.1 Signal processing in the transmitter .32
4.5.5.2 Signal processing in the receiver.34
4.5.6 Path termination 44 736 kbit/s.35
4.5.6.1 Signal processing in the transmitter .35
4.5.6.2 Signal processing in the receiver.37
4.5.7 Path termination 139 264 kbit/s.39
4.5.7.1 Signal processing in the transmitter .39
4.5.7.2 Signal processing in the receiver.41
4.6 PDH Physical Interface (PPI).42
4.6.1 Interface at 1 544 kbit/s.43
4.6.1.1 Signal processing in the transmitter .43
4.6.1.2 Signal processing in the receiver.43
4.6.2 Interface at 2 048 kbit/s.43
4.6.2.1 Signal processing in the transmitter .43
4.6.2.2 Signal processing in the receiver.43
4.6.3 Interface at 6 312 kbit/s.44
4.6.3.1 Signal processing in the transmitter .44
4.6.3.2 Signal processing in the receiver.44
4.6.4 Interface at 8 448 kbit/s.45
4.6.4.1 Signal processing in the transmitter .45

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4.6.4.2 Signal processing in the receiver . 45
4.6.5 Interface at 34 368 kbit/s . 45
4.6.5.1 Signal processing in the transmitter. 45
4.6.5.2 Signal processing in the receiver . 45
4.6.6 Interface at 44 736 kbit/s . 46
4.6.6.1 Signal processing in the transmitter. 46
4.6.6.2 Signal processing in the receiver . 46
4.6.7 Interface at 139 264 kbit/s . 47
4.6.7.1 Signal processing in the transmitter. 47
4.6.7.2 Signal processing in the receiver . 47
4.7 Equipment Management Function (EMF) . 47
4.7.1 Overview of the EMF . 47
4.7.2 Configuration . 49
4.7.3 Fault (maintenance) management. 49
4.7.4 Performance management. 49
Annex A (informative): Mechanism of the adaptive clock method . 54
Annex B (informative): Enabling/disabling the HEC functions. 55
Annex C (informative): Transmission capacity of the Network Adapter . 56
Annex D (informative): Definition of codes . 57
D.1 Alternate Mark Inversion (AMI). 57
D.2 High Density Bipolar of order 3 (HDB3). 57
D.3 Bipolar with 3 Zero Substitution (B3ZS). 57
D.4 Bipolar with 6(8) Zero Substitution (B6ZS and B8ZS) . 57
D.5 Coded Mark Inversion (CMI) . 57
History. 58

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Foreword
This European Telecommunication Standard (ETS) has been produced by the Joint Technical Committee
(JTC) of the European Broadcasting Union (EBU), Comité Européen de Normalisation ELECtrotechnique
(CENELEC) and the European Telecommunications Standards Institute (ETSI).
NOTE: The EBU/ETSI JTC was established in 1990 to co-ordinate the drafting of standards in
the specific field of broadcasting and related fields. Since 1995 the JTC became a
tripartite body by including in the Memorandum of Understanding also CENELEC,
which is responsible for the standardization of radio and television receivers. The EBU
is a professional association of broadcasting organizations whose work includes the
co-ordination of its members' activities in the technical, legal, programme-making and
programme-exchange domains. The EBU has active members in about 60 countries in
the European broadcasting area; its headquarters is in Geneva.
* European Broadcasting Union
CH-1218 GRAND SACONNEX (Geneva)
Switzerland
Tel: [phone]
Fax: [phone]
Digital Video Broadcasting (DVB) Project
Founded in September 1993, the DVB Project is a market-led consortium of public and private sector
organizations in the television industry. Its aim is to establish the framework for the introduction of
MPEG-2 based digital television services. Now comprising over 200 organizations from more than
25 countries around the world, DVB fosters market-led systems, which meet the real needs, and
economic circumstances, of the consumer electronics and the broadcast industry.
Transposition dates
Date of adoption: 21 November 1997
Date of latest announcement of this ETS (doa): 31 March 1998
Date of latest publication of new National Standard
or endorsement of this ETS (dop/e): 30 September 1998
Date of withdrawal of any conflicting National Standard (dow): 30 September 1998

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1 Scope
This European Telecommunication Standard (ETS) specifies the transmission of MPEG-2 Transport
Streams (TS) between two DVB interfaces as defined in EN 50083-9 [7] within Plesiochronous Digital
Hierarchy (PDH) networks working at the ITU-T Recommendation G.702 [8] hierarchical bit-rates of
1 544 kbit/s, 2 048 kbit/s, 6 312 kbit/s, 8 448 kbit/s, 34 368 kbit/s, 44 736 kbit/s and 139 264 kbit/s.
The use of any of these bit rates is optional, if however one or more rates are selected the complete
specification applies. The definition of the network aspects of the transmission of MPEG-2-TSs is based to
the maximum extent on existing international and European standards.
The equipment considered in this ETS is the Network Adapter performing the adaptation between
MPEG-2-TSs and the interfaces of PDH networks.
2 Normative references
This ETS incorporates by dated and 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] ETS 300 417-1-1: "Transmission and Multiplexing (TM); generic functional
requirements for Synchronous Digital Hierarchy (SDH) equipment; Part 1:
Generic processes and performance".
[2] ETS 300 417-2-1: "Transmission and Multiplexing (TM); generic requirements of
transport functionality of equipment; Part 2-1: SDH and PDH physical section
layer functions".
[3] prETS 300 417-5-1: "Transmission and Multiplexing (TM); generic requirements
of transport functionality of equipment; Part 5-1: Plesiochronous Digital
Hierarchy (PDH) path layer functions".
[4] EN 300 421: "Digital Video Broadcasting (DVB); Framing structure, channel
coding and modulation for 11/12 GHz satellite services".
[5] EN 300 429: "Digital Video Broadcasting (DVB); Framing structure, channel
coding and modulation for cable systems".
[6] ETR 290: "Digital Video Broadcasting (DVB); Measurement guidelines for DVB
systems".
[7] EN 50083-9: "Interfaces for CATV/SMATV headends and similar professional
equipment".
[8] ITU-T Recommendation G.702: "Digital hierarchy bit rates".
[9] ITU-T Recommendation G.703: "Physical/electrical characteristics of
hierarchical digital interfaces".
[10] ITU-T Recommendation G.704: "Synchronous frame structures used at 1544,
6312, 2048, 8 488 and 44 736 kbit/s hierarchical levels".
[11] ITU-T Recommendation G.706: "Frame alignment and caclic redundancy check
(CRC) procedures relating to basic frame structures defined in ITU-T
Recommendation G.704".
[12] ITU-T Recommendation G.707: "Network node interface for the synchronous
digital hierarchy".
[13] ITU-T Recommendation G.783: "Characteristics of Synchronous Digital
Hierarchy (SDH) equipment functional blocks".

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[14] ITU-T Recommendation G.804: "ATM cell mapping into plesiochronous digital
hierarchy (PDH)".
[15] ITU-T Recommendation G.823: "The control of jitter and wander within digital
networks which are based on the 2 048 kbit/s hierarchy".
[16] ITU-T Recommendation G.824: "The control of jitter and wander within digital
networks which are based on the 1 544 kbit/s hierarchy".
[17] ITU-T Recommendation G.826: "Error performance parameters and objectives
for international, constant bit rate digital paths at or above the primary rate".
[18] ITU-T Recommendation G.832: "Transport of SDH elements on PDH networks:
Frame and multiplexing structure".
[19] ITU-T Recommendation H.222.0: "Information technology - Generic coding of
moving pictures and associated audio information: Systems".
[20] ITU-T Recommendation I.361: "B-ISDN ATM layer specification".
[21] ITU-T Recommendation I.363.1: "B-ISDN ATM adaptation layer (AAL)
specification".
[22] ITU-T Recommendation I.432: "B-ISDN user-network interface - physical layer
specification".
[23] ITU-T Recommendation I.732: "Functional characteristics of ATM equipment".
[24] ITU-T Recommendation J.82: "Transport of MPEG-2 constant bit rate television
signals in B-ISDN".
[25] ITU-T Recommendation M.2120: "Digital paths, section and transmission
system fault detection and localization procedures".
[26] ITU-T Recommendation Q.822: "Stage 1, stage 2 and stage 3 description for
the Q3 interface - performance management".
3 Definitions and abbreviations
3.1 Definitions
For the purposes of this ETS, the following definitions apply:
MPEG-2 Transport Stream (TS) packet: A data packet possessing a length of 188 bytes including
4 bytes of header information. The header contains MPEG related data.
RS coded MPEG-2 Transport Stream (TS) packet: A data packet possessing a length of 204 bytes.
Bytes 1 to 188 contain an MPEG-2-TS packet. Bytes 189 to 204 contain the parity-check bytes for the
error correction of the preceding bytes of this packet. These parity-check bytes are generated using a
shortened Reed-Solomon code RS(204,188).
3.2 Abbreviations
For the purposes of this ETS, the following abbreviations apply:
AAL ATM Adaptation Layer
ASI Asynchronous Serial Interface
ATM Asynchronous Transfer Mode
BER Bit Error Rate
CRC Cyclic Redundancy Check
CS Convergence Sublayer
DVB Digital Video Broadcasting

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EMF Equipment Management Function
FAS Frame Alignment Signal
FEC Forward Error Correction
LOF Loss Of Frame
OAM Operation Administration and Maintenance
MAA MPEG ATM Adaptation
MMI Man Machine Interface
MPEG Motion Picture Expert Group
MPI MPEG Physical Interface
NE Network Element
PDH Plesiochronous Digital Hierarchy
PDU Protocol Data Unit
PPI PDH Physical Interface
PPT PDH Path Termination
RDI Remote Defect Indication
RS Reed-Solomon
SAR Segmentation And Re-assembly Sublayer
SDH Synchronous Digital Hierarchy
SN Sequence Number
SPI Synchronous Parallel Interface
SSI Synchronous Serial Interface
TS Transport Stream
VP Virtual Path
VPE VP Entity
VPME VP Multiplexing Entity
4 Baseline specification
The Network Adapter is an equipment which performs the adaptation of data structured as an
MPEG-2-TS to the characteristics of a PDH link (see ITU-T Recommendation H.222.0 [19]). The solution
selected for the transmission of MPEG-2-TS packets, respectively RS coded MPEG-2-TS packets, over
PDH links is based on the use of ATM cells. Therefore, the adaptation of the transport of an MPEG-2-TS
basically consists in:
- adaptation of MPEG-2-TS packets or RS coded MPEG-2-TS packets to ATM cells;
- adaptation of ATM cells to PDH framing.
The normative references applicable to the adaptation unless specifically mentioned are given here below:
- the adaptation of MPEG-2-TS packets into ATM cells using an AAL type 1 shall be performed as
described in ITU-T Recommendation J.82 [24].
AAL type 1 is specified in ITU-T Recommendation I.363.1 [21], the ATM layer is specified in ITU-T
Recommendation I.361 [20];
- the adaptation of ATM cells into PDH framing shall be performed as described in ITU-T
Recommendation G.804 [14].
There is no normative reference for the adaptation of RS coded MPEG-2-TS packets to ATM cells.
This adaptation shall be performed as described in ITU-T Recommendation J.82 [24] for MPEG-2-TS
packets, with the only exception that the RS coded MPEG-2-TS packets are not aligned with the structure
of the AAL1 interleaving matrix.
The Network Adapter is described as a group of functional blocks. The partitioning into functional blocks is
based on existing recommendations on Synchronous Digital Hierarchy (SDH) equipment (ITU-T
Recommendation G.783 [13]) and ATM equipment (ITU-T Recommendation I.732 [23]).
The equipment consists of the following blocks (see also figure 1):
- MPEG Physical Interface;
- MPEG/ATM Adaptation;
- ATM/VP Termination;
- VP Multiplexing Entity;

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- PDH Path Termination;
- PDH Physical Interface; and
- Equipment Management Function.
The present description is a functional description and does not imply any specific equipment
implementation but it allows for the implementation of a separate transmitter and receiver as well as a
combined transmitter/receiver.
MPI MAA VPE VPME PPT PPI
PDH
DVB
MPEG Virtual VP PDH PDH
MPEG
Link
Equipment a c d e f g
b
Physical ATM Path Multiplexing Path Physical
Interface Adaptation Entity Entity Termination Interface
EMF
Equipment
Management
Function
Figure 1: Functional blocks of the Network Adapter
It should be noticed that most of ATM functional blocks contained in ITU-T Recommendation I.732 [23] do
not appear in figure 1 as they are not relevant for the adaptation.
This adaptation corresponds to the protocol stack shown in figure 2:
MPEG2 System layer (Transport
Stream)
RS coded MPEG2-TS
ATM Adaptation Layer type 1
ATM layer
Transmission Convergence sublayer
Physical Medium Dependent sublayer
Figure 2: Protocol stack for the adaptation process
The following functional blocks are identified:
- the MPEG-2-TS Physical Interface:
the Network Adapter accepts, at its input port, either an MPEG-2-TS consisting of
consecutive MPEG-2-TS packets, or an extended version of an MPEG-2-TS that already
contains error protection (RS coded MPEG-2-TS packets). Packets length of 188 bytes and
204 bytes can be handled;
- the MPEG/ATM Adaptation:
this corresponds to the adaptation between the MPEG-2-TS respectively the RS coded
MPEG-2-TS and the ATM cells via an AAL type 1. This adaptation, besides format
adaptation, provides functions for the MPEG-2-TS clock transmission transparency (adaptive

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clock method) and information transparency using the clock and data recovery mechanism of
AAL1. It is expected that under normal transmission conditions the received MPEG-2-TS will
-10 -11
be quasi error free, corresponding to a Bit Error Rate (BER) of about 10 to 10 at the
input of an MPEG-2 equipment at the receiver site. This requirement is in accordance with
DVB systems using satellite services EN 300 421 [4] and cable systems EN 300 429 [5];
- the ATM Virtual Path (VP) Termination:
the only function performed is the VP setting. It allows the simultaneous transmission of
several independent MPEG-2-TS on one PDH link;
- the VP Multiplexing Entity:
if different MPEG-2-TS have to be simultaneously transported, the ATM cells belonging to
different VPs are multiplexed in the transmitter respectively demultiplexed in the receiver.
If only one MPEG-2-TS has to be transported, only one VP is used. The adaptation to the
useful bit-rate offered by the PDH link is performed by adding respectively removing idle
cells. At the receiver, this block also performs cell delineation and ATM cell header checking;
- the PDH Path Termination:
this block generates and terminates all the overhead of the PDH frames carrying ATM cells.
The overhead contains information providing Operation Administration and Maintenance
(OAM) functions;
- the PDH Physical Interface:
this block prepares the signal for the transmission on the physical medium. Channel
encoding is used as described in ITU-T Recommendation G.703 [9] that allows a network
clock recovery directly from the received signal;
- the Equipment Management Function:
this block manages all the other functional blocks. It ensures the Man Machine Interface
(MMI).
4.1 MPEG Physical Interface (MPI)
This function provides the interface between the Network Adapter and the MPEG-2-TS sources or
receivers. The physical characteristics of this interface shall follow the specification given in
EN 50083-9 [7]. Three different types of interfaces are specified. They are called:
- Synchronous Parallel Interface (SPI);
- Synchronous Serial Interface (SSI);
- Asynchronous Serial Interface (ASI).
The interfaces use the MPEG-2-TS Packet structure (188 bytes) or the RS-coded packet structure
(204 bytes). For the SPI and the SSI, the 204-byte format may be used either for the transmission of
188-byte MPEG-2-TS packets with 16 dummy bytes, or for the transmission of 204-byte RS-coded
packets.
In order to prevent alarms being raised and failures being reported during set-up procedures or if the input
port is not in use (in the case of a multi-port equipment), the MPI function shall have the ability to enable
or disable fault case declaration. The MPI shall be either monitored (MON) or not monitored (NMON).
The state MON or NMON is provisioned by the equipment manager to the MPI via the EMF function.
4.1.1 Signal processing in the transmitter
Signal flow from a-to-b (see figure 1).

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a) Recovery of MPEG-2 packets
This function recovers the data bytes and their clock from the received signals:
- for the SPI, this recovery is based on the use of the Data (0-7), the DVALID, PSYNC and clock
signals, as specified in subclause 4.1 of EN 50083-9 [7];
- for the SSI interface, the processing includes optical receiver (for fibre-optic-based link) or
coupling/impedance matching (for coaxial cable), amplifier/buffer, clock recovery and bi-phase
decoding, serial to parallel conversion, as specified in annex A of EN 50083-9 [7];
- for the ASI interface, the processing includes optical receiver (for fibre-optic-based link) or
coupling/impedance matching (for coaxial cable), amplifier/buffer, clock/data recovery and serial-to-
parallel conversion, FC comma deletion, 8B/10B decoding, as specified in annex B of
EN 50083-9 [7]. In the next step, the recovery of the TS clock is performed (see annex E of
EN 50083-9 [7] on Implementation guidelines and deriving clocks from the MPEG-2 packets for
the ASI).
The function also realizes the sync acquisition of the MPEG-2-TS packets respectively of the RS-coded
MPEG-2-TS packets, on the basis of the method proposed in subclause 3.2 of ETR 290 [6]
(five consecutive correct sync bytes for sync acquisition; two or more consecutive corrupted sync bytes
should indicate sync loss).
The packet size (188 bytes or 204 bytes) may be recovered from the received signals, on the basis of the
PSYNC signal for the parallel interface, or on the basis of periodicity of the synchronization bytes for the
serial interfaces. For the case of the SPI and of the SSI interface, the decision between 204-byte format
for MPEG-2-TS packets with 16 dummy bytes and 204-byte format for RS-coded MPEG-2-TS packets
can be made:
- on the basis of the DVALID signal for the SPI: a high level during the last 16 bytes indicate RS
redundancy bytes (see subclause 4.1.1 of EN 50083-9 [7]); or
- on the basis of the value of received synchronization bytes for the SSI interface: 47H indicates
204-byte format with 16 dummy bytes and B8H indicates 204-byte RS coded (see subclause A.3.2
of EN 50083-9 [7]).
For the case of the ASI Interface, the following decision is taken: if the packet size is 204 bytes, it is an
RS-coded MPEG-2-TS packet.
Dummy bytes are discarded by the MPI function in the case of the 204-byte format with 16 dummy bytes.
The function passes the recovered MPEG-2-TS packets or the RS coded MPEG-2-TS packets and the
timing information to point b of figure 1.
The function shall meet the electrical/optical characteristics, return loss and jitter requirements specified in
EN 50083-9 [7].
This function shall also detect:
- the absence of valid input signals;
- the absence of clock;
- a DVALID signal constantly low in the case of the SPI.
If any of these defects is detected, a Loss Of Signal (LOS) is reported at the EMF if the function is in MON
state.
If a loss of synchronization of MPEG-2-TS packets or RS coded MPEG-2-TS packets is detected
according to the procedure proposed in ETR 290 [6] subclause 3.2 (i.e. two or more consecutive
corrupted sync bytes are found), a TS-sync_loss error on the input signal (TSLE_I) is reported at the EMF
if the function is in MON state.

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b) Performance monitoring
Errored blocks are detected on the basis of the transport_error_indicator present in the headers of the
incoming MPEG-2-TS packets, in accordance to ETR 290 [6]. One second filters perform a simple
integration of errored blocks by counting during one second interval. The function generates the following
performance parameters concerning the input MPEG-2-TS signal received on the interface:
- N_EBC_I: every second, the number o
...