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ISBN 2-7461-1453-4
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© Copyright - Paris, 2008
IRTN
International Railway Telecommunication Network
Current telecom infrastructure in Europe
Technical Report 2008
Source: UIC Telecommunication Panel of Experts (PETER)
Distribution:
•
ERTMS Platform Members
•
PETER Members
•
ERIG Group
DOCUMENT DATA SHEET
Title of the document
Version number and date
Document code
Number of pages
Prepared by
Approved by
Filing name
IRTN
International Railway Telecommunication Network
Current telecom infrastructure in Europe
V. 1.0 –26/02/2008
2008-2054
57
UIC Telecom Panel of Experts (PETER)
Paolo de Cicco
IRTN Technical Report 2008 v1.doc
Contents
Foreword ......................................................................................................1
Railway fixed Telecom Network in Austria ................................................3
1 - The Transmission Network .................................................................................................3
2 - The IP Network ...................................................................................................................4
3 - The administrative Voice Network ......................................................................................5
Railway fixed Telecom Network in Belgium ..............................................7
1 - Introduction. ........................................................................................................................7
2 - The Fiber Optic Network. ....................................................................................................7
3 - The transmission systems. .................................................................................................8
4 - The IP-network ...................................................................................................................9
5 - The Fixed Telephony Network. ......................................................................................... 11
6 - The GSM-R network .........................................................................................................13
International Connections of Railway Telecommunication Network
in Czech Republic......................................................................................17
1 - Cable network ...................................................................................................................17
2 - Transmission Equipment Network ....................................................................................17
3 - Voice network ...................................................................................................................18
4 - Fixed RTN ........................................................................................................................19
5 - GSM-R (Mobile RTN) .......................................................................................................19
6 - Fixed and Mobile RTN Numbering Plan ...........................................................................19
7 - Data network.....................................................................................................................20
Transmission network in France - High Level description ....................21
1 - Object ...............................................................................................................................21
2 - Generalities - Introduction to the Transmission Network ..................................................21
Railway fixed network for office communication in Germany ..............27
1 - Abstract .............................................................................................................................27
RFI Fixed Telephone Network .................................................................31
1 - Starting .............................................................................................................................31
2 - The RFI fixed voice network .............................................................................................31
3 - Fixed voice architecture ....................................................................................................31
4 - Inter-departemental network .............................................................................................32
5 - Departemental network.....................................................................................................34
6 - Metropolitan network ........................................................................................................35
7 - Conclusion ........................................................................................................................36
Railway fixed network for office communication in Poland ..................39
1 - About us ............................................................................................................................39
2 - History...............................................................................................................................40
3 - Offer ..................................................................................................................................41
4 - Infrastructure.....................................................................................................................41
5 - DWDM network.................................................................................................................42
6 - Telephone network ...........................................................................................................48
7 - Development plan of telecommunication network ............................................................49
8 - Network safety ..................................................................................................................49
9 - Network safety ..................................................................................................................50
Railway fixed network for office communication
in United Kingdom.....................................................................................51
1 - Introduction
...................................................................................................................51
2 - Current Systems
....................................................................................................51
3 - Beyond Network Rail ........................................................................................................54
PETER Member List ..................................................................................57
List of figures
Figure 1: map of the network in Belgium ...............................................................................10
Figure 2: Quick overview of the fixed telephony network in Belgium .....................................12
Figure 3: SNCB map ..............................................................................................................15
Figure 4: International Connectivity of voice RTN in Czech Republic....................................18
Figure 5: RFF transmission network .....................................................................................25
Figure 6: Architecture of Railway fixed network in Germany .................................................28
Figure 7: International routing tables of the railway fixed network in Germany .....................29
Figure 8: Inter - Departmental Meshing ................................................................................33
Figure 9: Regional Codes Voice Fixed Network (2007) .........................................................37
Figure 10: Divisions seats and operation areas .....................................................................40
Figure 11: Fibre optic cables network ....................................................................................42
Figure 12: DWDM, SDH STM16 ............................................................................................43
Figure 13: International connection........................................................................................44
Figure 14: Transmission network ...........................................................................................45
Figure 15: ATM, FR and IP network .......................................................................................46
Figure 16: X.25 network .........................................................................................................47
Figure 17: Telephone network................................................................................................48
Figure 18: Nokia Dynanet ......................................................................................................52
Figure 19: Existing fixed voice switched network...................................................................53
Figure 20: ETD Network DPNSS Connectivity ......................................................................54
Figure 21: UK Rail Telecommunications Link to Europe ........................................................55
Foreword
The UIC Telecommunication Panel of Experts group (PETER) is formed by about
25 active members mainly responsible for implementation and maintenance of the
national telecommunication network (fixed, mobile and data networks – digital and analog
technologies).
The group has been working, since the beginning of 2006, at an integrated telecom vision
with the objective of designing and realising a unique railway telecom infrastructure where
fixed and mobile telecom networks are fully integrated and “signalling railway applications”
can run with the requested QoS.
First step was represented by the signature of the “ERNST/EIRENE Memorandum of
Understanding on the Integration of Fixed & Mobile railway telecom network numbering
schemes and its first pilot implementation”. The MoU has been accepted and signed by
17 railway administrations. The first consideration was that there was benefit to aligning
the numbering schemes of the railway fixed telephone networks with those used on the
GSM-R systems. From an interoperability point of view, the area of synergy considered
was the numbering range of the fixed telephone networks in the countries.
The ERNST project, developed at UIC, defined a single European railway telephone
numbering area compliant with the European standards.
The «ERNST data base (European Railway Numbering Scheme for Telecommunications)»
currently contains the numbering schemes of the railway telecommunications networks, fixed
and mobile, namely GSM-R. The data base, hosted at the UIC Web server in Paris, contains
values from 27 Infrastructure Managers, Railway Operators and Railway Organisations
in 24 countries. With the new features recently implemented, it has become an efficient
tool to manage the IRTN network. A restricted area, recently set, contains a complete
inventory of national circuits which form part of international telecommunication lines, and
routing tables of telephone switches. These pieces of information help telecommunication
staff to operate and maintain the network (visit the ERNST database at the URL address
http://www.irtn.net or http://ernst.uic.asso.fr).
IRTN - Current telecom infrastructure in Europe
Information on current telecom infrastructure has been collected in UIC, as part of the
PETER group activity and stored at Infrastructure Department. This document reports
information on railway telecom infrastructure from the following networks: DB, Network
Rail, ÖBB, PKP, RFF, RFI, SNCB and SZDC.
I take this opportunity to thank all the railways and PETER members that are participating
in this work, without their contributions this report would never have been produced.
Paolo de Cicco
Chairman of the
UIC Telecom Panel of Experts
Austria
Railway fixed Telecom Network
in Austria
1 - The Transmission Network
ÖBB owns a digital transmission network covering all Austria with extensions to neighbouring
countries, which is based on the ÖBB fibre optic network, but partly on copper cables.
ÖBB have installed in sum 6.500 km of fibre optic cables and 11.000 km of copper cables.
Specialists of ÖBB are responsible for planning, installation and operation of the telecom
transmission network, which is permanently modified and adapted to meet all necessities
of the users concerning locations, capacity and quality.
The structure of the network is in accordance with the railway lines and comprises three
hierarchy levels: backbone, regional and local level. The backbone network is a photonic
network which connects with STM16 (2,5 Gbit/s) SDH links the major cities and railway
nodes of Austria. The lower levels are the structures of the STM16 and STM4 regional
network to connect the railway stations in between and the STM1 local network for all other
operational sites along the tracks.
The users of the network are all entities of the ÖBB for railway internal applications, but
also “ÖBBTel”, which is a 100 % daughter company of ÖBB offering services to customers
on the telecom market.
Concerning railway operation the transmission network is used for:
•
•
•
•
•
•
the ÖBB IP network,
the ÖBB administrative voice network (part of IRTN),
connections for the ÖBB operative voice equipment,
connections for the ÖBB digital radio equipment,
connections for the ÖBB electronic signalling equipment,
connections for the control of the ÖBB electric power system.
The operation of the transmission network is performed by the central Network Management
System in Vienna. The service and maintenance activities are also provided by experts of
the ÖBB staff.
3
2 - The IP Network
ÖBB owns a data network based on IP. The IP network is set on top of the SDH transmission
network through all areas of Austria. In metropolitan areas the IP network is directly attached
to dark fibres. Copper lines with modems are mainly being used in regional areas. Planning,
installation and operation of this network is performed by specialists of the ÖBB staff.
The network hierarchy consists of a backbone layer, regional layer and local area networks
(LAN):
•
The backbone layer is based on 155 Mbit links connecting the major cities and railway
nodes of Austria and 1 Gbit links in the metropolitan area of Vienna.
•
•
The regional layer is being interconnected with links between 128 kbit and 100 Mbit.
All LANs are exclusively based on Ethernet technology.
The network is for universal use as well for railway operation as for administration and
connects railway stations of all sizes, control centres, service centres, office buildings,
workshops, power plants and so on. It is also used for other external partners on contractual
basis. Using MPLS technology the different applications can be served by different VPNs
(“Virtual Private Networks”), critical applications can be prioritised on demand by the option
QoS (“Quality of Service”).
The IP network consists of approximately 1.100 routers and 3.000 switches and hubs.
More than 30.000 end nodes are attached to this network.
The operation is performed by four Network Management Centres in Vienna, Linz, Innsbruck
and Villach. The service and maintenance activities are also provided by experts which
belong to the of the ÖBB staff.
Additional to the IP Network ÖBB runs an X.25 network. POS (“Point of Sale”), ticket
machines and railway control centres are attached to this network.
4
Austria
3 - The administrative Voice Network
The ÖBB own a digital voice network for administrative purpose (so called “Basa“), which
is installed along the railway lines and by which railway internal as well as railway external
communication can be achieved. This network is connected to the public telephone network
and to the networks of neighbouring railways. The principles of ERNST (European Railway
Numbering Scheme for Telecommunication) are applied, which means, that the ÖBB
Voice Network can be considered as as part of the IRTN (International Railway Telephone
Network).
In Austria there are 184 telephone switches, which in sum represent the voice network. The
size of the switches can be divided in three categories:
•
•
•
small: up to 200 subscribers, ca. 75% of the switches.
medium: up to 500 subscribers, ca. 15% of the switches.
big: more than 500 subscribers, ca. 10% of the switches.
The communication among the switches is achieved by ISDN-QSIG and IP - connections,
which guarantees high availability of the services. For the connections to the public voice
network according to the number and demand of the subscribers ISDN “basic connections”
(2 voice channels) or ISDN “multi connections” (30 voice channels) are applied.
At present there exist ca. 26.000 subscribers, which can be divided in four categories:
•
analogue telephone sets for operational applications, emergency calls, fax and modem
equipment,
•
•
•
system telephone sets for office working places,
ISDN telephone sets in special cases and for digital data transmission,
IP telephone sets.
The complete spectrum of telephone applications and the appropriate equipment of all ÖBB
entities are designed, customised, operated and maintained by experts of the ÖBB staff.
The variety of applications extends from simple voice mail boxes to individual designed
contact centre solutions. Some hundred contact centre working places are operated with a
capacity of approximately four million calls per year.
5
All maintenance and trouble shooting services for the voice network are managed by
helpdesks which are operated by 24 hours by ÖBB specialists. This guarantees optimal
availability of equipment and services.
6
Belgium
Railway fixed Telecom Network
in Belgium
1 - Introduction.
Since January 1st 2005 the former SNCB/NMBS (Belgian State Railways) has been
transformed into the SCNB/NMBS-group, which consists of three members:
•
•
•
Infrabel, responsible for the fixed railway equipment;
the (new) SNCB / NMBS as a railway operator;
the SNCB/NMBS Holding dealing with issues of common interest as HR-management
and ICT-activities.
Fixed assets related to the network belong to Infrabel and ICT is responsible for operating
them.
Below, a brief summary of the ICT infrastructure and in particular the Fibre Optic, the
transmission, the IP, the fixed telephony and GSM-r Networks.
2 - The Fiber Optic Network.
The SNCB/NMBS started the deployment of his fibre optic network in the second half of the
nineties. For the moment only a few secondary lines have to be equipped, so the network
is in place from border to border. Interconnection has been realized to the Netherlands,
France and Luxembourg.
The major part of the trackside being electrificated, the Belgian Railways have chosen for
an airline construction on their 3 kV tracksides. In the beginning 32 or 36 fiber cable was
used, afterwards some tracks were equipped with 72 or even 144 fiber cable. The cable
consists of modules with 6 fibres and there is always a module reserved for (Infrabel)
signaling needs.
The project has been financed by the SNCB/NMBS company themselves. That’s why the
company is allowed to commercialize over-capacity of the network.
7
Syntigo, a commercial subsidiary, is in charge of the related commercial activities. To
join their clients outside the railway territory they need to look for appropriate last mile
solutions.
The map in attachment illustrates the network available at the moment (end 2007). The
map only shows the railway network. Last mile extensions for commercial projects are out
of scope.
3 - The transmission systems.
In relation to the installation of the fiber optic cable network an appropriated transmission
system was needed. Since the construction of the first high speed line (L1 Brussels –Paris)
SDH-technology (provided by Alcatel) has been generalized.
For the moment a STM-16 bandwidth is available on all major links.
On all links a STM-1 daisy chain offers access for the most important applications as
GSM-R. The major part of these STM-1 links have been built using Lucent equipment.
However a lot of legacy applications still need low bandwidth connectivity involving to
maintain PDH in the access part. Because of Ethernet becoming a standard in industrial
environment as well, the support for Ethernet access has been implemented in the most
recent installations.
As the need for extra fibre capacity seams never ending a project has been started to
implement CWDM technology on some links where a lack of fibre seems to be probable.
CWDM-links are planned for interconnecting Brussels-Charleroi, Brussels-Namur, BrusselsLiège, Charleroi-Liège-Namur, Brussels – Gent and Antwerpen-Hasselt.
At the moment we operate SDH-links over Fibre Optic for railway needs to France, the
Netherlands and Luxembourg. Facilities are available at the German border as well but
they are still using DSL-modem on old cupper cable.
8
Belgium
4 - The IP-network
The ICT-department is operating a country wide TCP/IP datanetwork interconnecting
approximately 100 sites equipped with LAN facilities. These LAN are Ethernet networks
either 10 Mbps shared or 10/100 Mbps switched type. They are interconnected using
routers or Layer 3 switches. Over all approximately 20.000 end stations are connected to
the network.
The network is using an internal IP address scheme according to RFC1918 and applies the
EIGRP routing protocol.
A campus network is implemented on 15 backbone sites. Here we use layer 2 switches,
while the link to the backbone is implemented on the layer 3 level by Cisco Catalyst 6500.
These backbone nodes are being interconnected by GigabitEthernet links using fiber.
Other important LAN-sites are interconnected to the backbone by layer 3 switches Cisco
3750 and GigabitEthernet in daisy-chain. Smaller sites are connected via router and E1
links (or even 64 kbps in some isolated locations).
The different buildings of the headquaters in the neighbourhood of the Brussels MidiStation belong to the most important campus network. Two computer centers hosting the
IBM mainframes and an important server farm are connected to this campus network using
Fast- or GigabitEthernet.
At the end of 2007 we are operating nearly 500 WLAN (Wifi) Hotspots for internal use.
At 38 railway station premises Wifi-services are offered to the passenger in collaboration
with an external partner.
Our central site in Brussels is interconnected to
•
•
•
the international HITRAIL (MPLS)-network;
the internet via two 100 Mbps links to different ISP;
a third ISP via a 8 Mbps dealing with the internet traffic of our passengers using
WiFi services provided by an external partner in 38 railway stations.
A map of the network is represented in Figure 1.
9
n° tête :
Range:
2
050/ 30 21 11
050/ 30 2***/4***
n° tête :
Range:
901
BRUGGE
1
KORTRIJK
n° tête :
Range:
n° tête :
Range:
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1
056/ 26 31 11
056/ 26 3***
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065/ 32 2***
065/ 323 0**/1**
065/ 58 2***/3***/4***
2
2
2 2
2
2
09/ 241 21 11
09/ 241 2***/3***
09/ 242 6***
991
GENT
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MONS
n° tête :
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P
2
1
2
T2
T1
2
2
1
P
015/ 40 21 11
015/ 40 2***
1 n° tête :
Range:
FBMZ
FRAN
1
2
016/ 21 21 11
016/ 21 2***
1
AVIM
2
071/ 60 21 11
071/ 60 2***/3***
071/ 604 0**/2**/3**/4**/5**/6**/7**
LEUVEN
n° tête :
Range:
1
TA
n° tête :
Range:
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MECHELEN
1
03/ 204 21 11
03/ 204 2***/3***/4***/69**
03/ 2048 0**/1**/7**
03/ 229 5***
921
2
ANTWERPEN
2
TB
971
CHARLEROI
931
2
2
2
HASSELT
961
961
NAMUR
1
1
Figure 1: map of the network in Belgium
2
Liaison 2Mb/s (DPNSS vers Omni / Cornet N entre Hicom)
(+ number of 2 Mb/s)
Central principal Hicom + Omni
Hicom + Omni Hoofdcentrale
2
M = Mobistar
P = Proximus
Liaison PRA vers opérateur public
(+ number of 2 Mb/s)
04/ 241 21 11
04/ 241 2***/3***/4***/5***
04/ 2415 2**/3**/5**/6**/7**/8**
061/ 22 88 11
051/ 22 5***
051/ 228 3**/4**/6**/7**/8**/9**
081/ 25 21 11
081/ 25 2***/8***
081/ 255 3**/4**/5**/6**/7**/8**/9**
LIEGE
941
2
n° tête :
Range:
011/ 29 81 11
011/ 29 8***
011/ 298 0**/1**/2**/3**
2
n° tête :
Range:
n° tête :
Range:
n° tête :
Range:
1
956
LIBRAMONT
10
Belgium
5 - The Fixed Telephony Network.
The backbone of the fixed telephony network is based on E1 links in a double star topology
with Brussels in the center.
The break-out to the public network is centralized in Brussels by routing the traffic involved
towards two transit switches (TA and TB) using 3 (E1) PRA.
F2M facilities, the interconnect to the GSM-R and the UIC-fix-telephony network is
implemented on the same switches.
On the regional level break out facilities are available in case of overflow by using 2 PRA
links.
At the moment the network includes three generations of switches : 56 Siemens HiCOM,
18 Siemens HiPath and 53 ATEA (now Siemens) Omni. Some of them have a limited
number of users as many small premises are distributed on the field. The network has a
capacity of nearly 33.000 connections, nearly 25000 are in use.
The 53 Omni switches will be replaced by an IP telephony solution (provided by Alcatel)
according to an investment program starting in 2008.
The Figure 2 offers a quick overview of the fixed telephony network.
11
2
Oostende
Blankenberge
2
B
K
2
2
2
Gent-Zeehaven
G
Lokeren
St-Niklaas
Dendermonde
2
2
2
2
A
Nivelles
Brainel'Alleud
B.k
Denderleeuw
Aalst
2
Geraarsbergen
Zottegem
Ath
Oudenaarde
T
BraineLe-Comte
M
C6500 switches:
Antwerpen-Centraal
Brugge
Bruxelles-Midi/Brussel-Zuid(Atrium & K-2)
Bruxelles-Nord/Brussel-Noord
Charleroi
Gent-Sint-Pieters
Hasselt
Kortrijk
Leuven
Liège
Mechelen
Mons
Namur
Tournai
C3750 switches
C3500 switches
2 Gbps link (etherchannel)
1 Gbps link
B.At
2
M
Lier
2
N
Geel
2
Mol
2
Landen
Tienen
Aarschot
L
Gembloux
Ottignies
2
Herentals
Antwerpen-Noord
2
4
C
Jemelle
H
2
2
Libramont
L
2
Arlon
Verviers
k-2
4
Bruxelles-Midi/
Brussel-Zuid
Bruxelles-Nord/
Brussel-Noord
Linkebeek
Etterbeek gare
Bruxelles-Luxembourg gare/
Brussel-Luxembourg
Brussel-Schuman
Brussel-Noord
Bruxelles-Schuman gare/
Atrium
Figure 2: Quick overview of the fixed telephony network in Belgium
12
Belgium
6 - The GSM-R network
The GSM-R network is being rolled out for the moment. At the end of 2007 nearly 300 of the
450 BTS are operational. The network uses 3 BSC, located in Brussels, Gent and Namur.
Each of them handles the traffic for approximately 150 BTS.
Two MSC have been installed in our two data centers located in Brussels. Those are
interconnected to the MSC of DB Netz in Frankfurt, ProRail in the Netherlands and SNCF
in Paris. Backup facilities have been implemented by an interconnection to the public GSMnetwork (actually Mobistar).
13
Figure 3: SNCB map
14
15
16
Czech Republic
International Connections
of Railway Telecommunication Network
in Czech Republic
The Railway Telecommunication Network (RTN) in Czech Republic consists of several
parts, namely cable network (metal and optical fibre), transmission equipment network,
fixed and mobile voice network and data transmission network. Every part has been used
for establishing international connections to railways in neighbouring countries and through
them to other European countries. The article focuses on technical aspects of existing
international connections.
1 - Cable network
The optical fibre cables with at least 36 fibres have been installed across the borders to
Germany, Poland and Austria. The optical fibre cable to Slovak Republic could not yet been
installed due to the planned reconstruction of the railway track across the border. After its
building-up, all neighbouring countries will be connected through optical fibre cables.
If the optical fibre cable is not available, the copper pairs or quads in metal cables have
been used.
The cables are terminated in the cabinets located on the state border (or several meters
from the border).
2 - Transmission Equipment Network
The SDH technology with STM-1 (155 Mbit/s) or PDH technology of 3rd order (34 Mbit/s)
is used in transmission equipment network for making a connection from the location of an
international telecommunication node to the border and neighbouring railways. The growing
requirements of applications aim at implementation of higher transmission speed (STM-4
and STM-16) in the national backbone transmission network however the transmission
speed of 155 Mbit/s to the neighbouring railways seems to be sufficient regarding existing
international applications. While the PDH technology has been designed and built-up on
the products of Czech firm TTC Marconi, the Cisco products of ONS family and Marconi
products have been implemented in SDH transmission network.
17
In several cases, SDH and PDH technologies coexist in the same direction (of course, in
different ways and cables), e.g. the connection to the German border can be built-up in
both technologies mentioned above. However, the SDH technology is preferable.
Digital connections based on SDH technology have been installed on the borders to Germany
and Austria. At the moment, just one 2 Mbit/s channel is operated in every direction, serving
for GSM-R connection to Germany and for fixed RTN connection to Austria. However, the
transmission capacity can be increased almost immediately. The connection to fixed RTN
in Slovak Republic has been established on leased line from public provider.
The old analogue twelve channel transmission equipments are used in cases where the
optical fibre cable across the border is not available or the transmission equipment has not
yet been installed on both sides of the border. Such connections have been still operated to
Poland and to Germany. The connection to Germany serves for fixed RTN connection.
3 - Voice network
The overview of existing international connections is presented in Figure 3.
Germany
MSC
Poland
Int RTN
PBX
Austria
Slovak Republic
Explanations:
MSC
- Mobile Switch Center (GSM-R)
Int RTN PBX - International Railway Telephone Network Private Branch Exchange
- Analogue Connection
- Digital Connection
Figure 4: International Connectivity of voice RTN
in Czech Republic
18
Czech Republic
4 - Fixed RTN
Fixed voice RTN was renewed in 2004. New digital PBX´s of type MD 110 from Ericsson
were installed having formed the backbone part of fixed voice RTN. The renewal of former
analogue telephone exchanges enabled to built-up the first international digital voice
connection to Austria. It was followed by the connection to Slovakia but the leased line had
to be used for that purpose temporarily. The international PBX is located in Praha, Pod
Taborem, in the premises of railway telecommunication centre.
The international analogue telecommunication trunks have not been connected to the digital
PBX directly. Small digital PBX from Czech firm TTC Marconi has been inserted between
an analogue trunk and digital PBX. The reason for such solution was motivated by an idea
that the international PBX would be equipped with digital interfaces only. Consequently, the
calls to and from Poland and Germany are routed in this way.
5 - GSM-R (Mobile RTN)
After GSM-R commissioning in 2006 it was necessary to connect the Mobile Switch Centre
(MSC) to the MSC in Germany. At the moment, the connection is operational. The MSC is
located in Praha, Pernerova, in the premises of GSM-R telecommunication centre (another
place than location of the international PBX).
6 - Fixed and Mobile RTN Numbering Plan
The integrated numbering plan of fixed and mobile RTN according to the conclusions
and recommendations of the UIC ERNST (European Railway Numbering Scheme for
Telecommunications) Project has been implemented in Czech Republic. The subscribers
of fixed RTN can be dialled from GSM-R without any restriction, however some types of
calls from fixed RTN to GSM-R are barred from obvious reasons.
19
7 - Data network
At the moment, two types of data transmission connections with Internet Protocol (IP) are
available. The first solution is based on HERMES IP VPN (virtual private network), the
second solution on EURADAT connection. Both solutions are built-up on Cisco products.
The connection through HERMES IP VPN cannot be considered as technical solution,
it s solution based on delivery of electronic communication services from the third party.
Transmission equipments and trunks are hidden and a third party, an Internet Service
Provider (ISP), offers their functionality as a part of a VPN “cloud”. The internal parameters
of the ISP network need not to be known because the quality of service is guaranteed by
a service level agreement. The provider of HERMES IP VPN operates a Point of Presence
(PoP) in Praha. Railway data transmission network is connected to the PoP through
customer premises edge router. In fact, the international connection is not performed
through railway telecommunication network in this case.
At the moment, the HERMES IP VPN is used by applications that are operated by Railway
Undertakings such as seat reservations or freight train announcement. The connection
through the HERMES IP VPN is available to Austria, Germany, Poland and Slovak Republic
(and to other members of HERMES community, of course). The guaranteed transmission
speed of PoP in Praha is 2 Mbit/s.
The acronym EURADAT stands for European Data Transmission Network that is built-up
by connection of national railway data transmission networks. The connection can profit
from the existing railway telecommunication infrastructure mentioned above in the part
related to the international connection of voice communications. At the moment, the pilot
project of Voice over IP with 2 Mbit/s connection to Austria is being implemented.
20
France
Transmission network in France
High Level description
1 - Object
The object of this document is to present the RFF network transmission, and precisely the
whole of architecture concerning the interconnexions between RFF and other european
railway gestionnaries wich are rolling out a GSM-R network.
2 - Generalities - Introduction to the Transmission Network
This network allows to establish links between different equipments wich are belong to the
infrastructure network.
It is shared by several applications, notably by railway signal applications and railway
telephony.
Two main levels are constituting the netwok :
•
•
Transport network,
Capillary network.
This classic cutting are known in all important transmission network. These two levels are
different by their adaptation to the mode of flow transport.
The capillary network drains a multiple low bandwidth access points until backbone on a
short distance.
The transport network (backbone) aggregates flux coming up from capillary to BSC and
switch.
The difference between capillary and transport network is the bandwidth level. Up to 2 Mb
is considered as capillary network, higher is Backbone. That one is composed of SDH
technology, ADM1, 4 or 16 nodes.
The Backbone is a meshed networks witch assures a high available secured architecture.
21
It is composed by :
•
Media telecom cables built on aerial or underground arteries. Those cables are cupper
or fibber optical technologies.
•
Transmission and synchronization nodes :
o High bit rate Add and Drop Multiplexers (ADM) : 211 are operated for the
moment, up to 400 in the future,
o Low level bandwidth multiplexers and modems : now, around 2000 remote
MICs, 1150 local MIC cards, and 504 modems.
The main wires are in whole cases constituted by fibber optical and rarely by long-distance
coaxial cables. Capillary network wires are built with metallic cables (cupper).
Railway regulation circuits, alarms circuits, energy supply remote control, railway signageTC/TK remote-control are transported by telecom cables.
Metallic cables have 22 thousand km length, and fibber optical cables are 8 thousand km
long.
2.1
Interconnections with foreign countries
Mostly European railway networks are equipped with GSM-R. Considering that trains
have to ride through borders, for international passengers and products transportation,
it is necessary to synchronise switches together, permitting operational border crossing. To
realise, it is necessary to link transmission networks. 4 interconnections are operational,
the others are planed until 2009.
A transmission interconnection link is built over a main and a secure 2 Mbits-circuits. The
architecture is either direct between 2 MSC or by a transit with a 3rd MSC. That one is Ok
with Holland and Switzerland.
22
France
2.1.1
Link France-Belgium (SNCB) → Operational
Main bond 1
•
•
Passing by RFF Network from MSC Paris-Evangile until Hautmont
Border area city : Hautmont, France
Main bond 2
•
•
Passing by RFF Network from MSC Paris-Evangile until Tournai
Border area city : Tournai, Belgium
2.1.2
Liaison France-Angleterre (British Rail) → Planed
Main bond
•
Passing by RFF Network from MSC Paris-Evangile until Calais – Frethun Marchandise
•
Border area city : Calais – Frethun - Marchandise, France
Secure bond
•
Passing by RFF Network from MSC Paris-Evangile until Calais – Frethun Marchandise
•
Border area city : Calais – Frethun - Marchandise, France
2.1.3
Liaison France - Luxembourg (CFL) → Planed
Main bond
• Passing by RFF Network from MSC Paris-Evangile until Thionville in France and
up to Luxembourg border by IRU wires contracted with an operator – Frethun Marchandise
• Border area city : Calais – Frethun - Marchandise, France
Secure bond
• Passing by a transit bridge on a foreign MSC (DB or SNCB)
23
2.1.4
Liaison France – Pays-Bas () → Operational
Main bond
•
Passing by a transit bridge on INFRABEL MSC (SNCB)
Secure bond
•
Passing by a transit bridge on DB MSC
2.1.5
Liaison France - Suisse (SBB) → Operational
Main bond
•
•
Passing by RFF Network from MSC Paris-Evangile until Saint-Louis in France
Border area city : Saint-Louis in France
Secure bond
•
Passing by a transit bridge on DB MSC
2.1.6
Liaison France - Italie (RFI) → Operational (main link)
Main bond
•
Passing by RFF Network from MSC Paris-Evangile until Lyon and up to Modane by a
rent wire to an operator
•
Border area city : Modane in France
Secure bond
•
24
Passing by a transit bridge on SBB MSC → planed
France
Angleterre
Hollande
Eurotunnel
Fréthun
Calais
-
Tornai
Luxembourg
Gare
du
Nord
Longwy
Forbach
DB
Reims
Paris
Evangile
Strasbourg Khel
St. Louis
Tours
SBB
La Rochelle
Lyon
Chambéry
Bordeaux
Modane
Arcachon
Dax
Bayonne
Marseille
Hendaye
Perpignan
Cerbère
Port Bou
RFI
Espagne
Transport Network
2 Mbits
4 Mbits
6 Mbits and up
Figure 5: RFF transmission network
25
2.1.7
Liaison France - Espagne (ADIF) →Planed
Main bond
•
Passing by RFF Network from MSC Paris-Evangile until Perpignan, in France, than up
to Port Bou in Spain or Cerbère in France by an Hertzian beam
•
Border area city : Port Bou in Spain or Cerbère in France, to be confirmed
Secure bond
•
Passing by RFF Network from MSC Paris-Evangile until Bayonne, in France, than up to
Hendaye in France by an Hertzian beam
•
Border area city : Hendaye in France, to be confirmed
The interconnections deployment is now planed until 2009 with the countries described
before.
In the future, regarding to the railway development, it will be possible to extend technical
perimeter and pull up the interconnections to eastern and north Europe. Than, the
architecture of transmission links will use MSC transit bridge one.
Concerning Eurotunnel, a project to build GSM-R into the 3 tubes is running on. One of
the possibilities is that RFF offers a Switch-GSM-R - service, resolving in the same time
interconnection problematic. In case of acceptance, Eurotunnel will construct his own BSS
System.
26
Germany
in Germany
1 - Abstract
•
•
•
•
120.000 subscribers,
2.100 PXB of different suppliers,
National transit network and VPN functionality hosted by ARCOR,
International Gateway in Frankfurt/Main.
The BASA network consists of approx. 2.100 PBX systems of different stage of expansion
and suppliers, which are grouped in local area PBX networks and in single PBX locations.
Most of the systems were directly connected to ARCOR. But some of them were optionally
interconnected by pre-selection of Deutsche Telekom.
All subscribers, approx. 120.000, are also part of the public PSTN. The VPN functionality
and the national transit network is implemented by ARCOR.
With the VPN functionality all subscribers of the BASA are merged into a uniform, private
railway numbering plan.
The interconnection to the GSM-R network and fixed dispatchers is realized by ARCOR,
used as a transit network. On this interconnection SS7 signalling protocol is used.
27
PBX
DSS1
y
EWSD
SS7
(PSTN)
PBX
ARCOR
DSS1
PBX
IN
IVPN
National transit network with IN
functionality to provide the IVPN.
EWSD
PBX
Private local area network
SS7
RNE
EWSD
RNE
SS7
DTAG
SS7
(PSTN)
DSS1
DSS1
PBX
PBX
DSS1
RNE
DSS1
Preselected
ARCOR
Railway fixed network
Office communication
SS7
DSS1
DSS1
PBX
Figure 6: Architecture of Railway fixed network in Germany
GSM-R / fixed Disp.
International Gateway Frankfurt/M
UIC Connections
RNE: Railway network exchange (S12 Alcatel)
PBX: Private Branch Exchange (Siemens, Alcatel, Tenovis )
EWSD: Switching System (Siemens) (PSTN ARCOR)
28
de st. ra ilw a y
France/Great Britain - ET
Austria - ÖBB
Belgium - SNCB
Bulgaria - BDŽ
Switzerland - SBB
Czech Republic - ČD
Denmark - BDK
Denmark - DSB
Spain - RENFE
France - UIC
France - SNCF
Great Britain - BR
Croatia - HŽ
Hungary - MÁV
Italy - FS
Luxembourg - CFL
Latvia - LDZ
Netherlands - NS
Norway - JBV
Poland - PKP
Portugal - RT
Romania - CFR
Sweden - BV
Slovenia - SŽ
Slovakia - ŽSR
Ukraine - UZ
dk
at
nl
dk
pl
ch
cz
dk
dk
fr
fr
fr
fr
at
at
ch
lu
prim . route
fr
at
be
Frankfurt
Figure 7: International routing tables of the railway fixed network in Germany
Dia lle d C ountry C ode R oute d C ountry C ode
9080 xyz
80 xyz
9043 xyz
xyz
9032 xyz
xyz
no Routing
9041 xyz
41 xyz
9042 xyz
xyz
9045 xyz
9045 xyz
9045 xyz
9045 xyz
9034 xyz
06 xyz
903326 xyz
26 xyz
9033 xyz
xyz
9044 xyz
44 xyz
903685 xyz
03685 xyz
9036 xyz
036 xyz
9039 xyz
39 xyz
90352 xyz
xyz
no Routing
9031 xyz
xyz
9045 (P) 9047 xyz
no direct Routing
9048 xyz
xyz
no Routing
no Routing
9045 (P) 9046 xyz
no direct Routing
90386 xyz
0386 xyz
no Routing
no Routing
Germany
29
30
Italy
RFI
Fixed Telephone Network
1 - Starting
•
This document represents the activity and the structure of RFI fixed voice communication
network
In particular :
•
Voice System Architecture as network infrastructure, switching equipment, wired lines,
to the PSTN and Management system.
2 - The RFI fixed voice network
Section task is to analyze the fixed Voice architecture of RFI.
3 - Fixed voice architecture
3.1
Voice network
The fixed voice network coverage is on national base. The RFI Network uses the railways
digital core national backbone to connect all the about 330 railways PABX distributed
on national base organized on hierarchy structure with connection/links to the PSTN in
relations with principal node.
For every Departmental Area there is a main Departmental PABX connected in star
architecture. Inside the Departmental area PABX, the link with the same level of other
Departmental node are utilized realizing a mesh network.
The network is a mix of star and mesh topology .
31
From the architectural point of view the voice network is diveded on three sub-network :
•
Metropolitan Network: include a urban center and if the dimension is limited can
managed by a single PABX responsible to the lines distribution throw the local
equipment. If the urban area is extended and there are more site to connect are present
more nodes with a sub network full o partially Mesh, dipending the location Some sites
are located outside of railway trackside and RFI use leased lines or radio minilink to
connect them at the phone network.
•
Departmental Network: the extension is related to the Departmental area; including
the link to center at all the urban areas using the radial architecture.
•
Inter-Departmental Network: the extension is related at the total national environement
and perform the link with the other Departmental PABX using a partial mesh network
architecture.
We can perform telephone link with the other european railways network using three trunk
available in the border corrispondance.
4 - Inter-departemental network
The Inter-Departmental Network perform using the junction links to the 15 Departmental
PABX Center :
a)
ANCONA
f)
GENOVA
k)
ROMA
b)
BARI
g)
MILANO
l)
TORINO
c)
BOLOGNA
h)
NAPOLI
m)
TRIESTE
d)
CAGLIARI
i)
PALERMO
n)
VENEZIA
e)
FIRENZE
j)
REGGIO CALABRIA
o)
VERONA
The Figure 7 shows the mapping of junction links to realize the newtwork partial meshing.
32
Italy
Figure 8: Inter - Departmental Meshing
33
5 - Departemental network
The existing number 15 Departmental Network to connect as above mentioned in the
radiale structure the periferihal nodes to the Departmental central node. The following
scheme summarize for every Departmental area the periferihal nodes and the total users
point of connection for each Departmental Area.
Department
Ancona
Bari
Bologna
Cagliari
Firenze
Genova
Milano
Napoli
Palermo
Reggio Calabria
Roma
Torino
Trieste
Venezia
Verona
Totale
34
N° nodes
24
16
22
10
27
15
34
22
23
21
29
35
13
19
17
327
Users Point
of Connection
3.088
2.080
4.138
907
5.244
2.918
8.631
5.221
3.051
2.274
11.307
4.504
1.705
2.599
2.639
60.306
Italy
6 - Metropolitan network
The Metropiltan Network include che hurban center: The difference is related to the
coverage area extension Following there is a summary report for those hurban area where
are located external railways building/premises at the trackside directed linked with a own
connection at the railwayu phone network.
6.1
Private switching equipment (PABX)
Starting from 1997 and 2007, the analog switching equipment of RFI phone network has
been completely upgraded throw the digital equipment. The actual asset is caratherized
from the new digital equipment.
The RFI telephone network upgrade starterd upon 1997 with the decision to realize a
common standard equipment The replanishement of these equipment was supplied by
Siemens selected throw a public tender. The PABX architecture is based on HiCOM and
Hipath lines equipment.
In the Turin Departmental area are used ERICSSON equipment.
6.2
Junction to the PSTN
To define the caratherization of RFI voice telephone system is important to know the
external trunk needed for the link/junction to the PSTN.
The parameter is been obtained from the following data analyses:
•
PABX mapping with the number of lines/trunks indication of inbounding and outbounding
bidirectional connection;
The data are been aggregate on telephone district area bases and the relation ship between
telephone district and Departmental area is been done using mapping procedure on the
PABX. In the following table is reported the Departmental area external telephone lines
number.
35
Department Area
Ancona
Bari
Bologna
Cagliari
Firenze
Genova
Milano
Napoli
Palermo
Reggio Calabria
Roma
Torino
Trieste
Venezia
Verona
TOTAL
Total
external RTG Lines
423
420
504
174
782
398
831
620
540
302
1.643
555
276
297
355
8.120
7 - Conclusion
In the RFI fixed network the lines are used basically for the internal network traffic. The
external lines supplied by public operator are used for the needing of link for the commercial
reasons .
RFI is moving toward a new assett:
•
Complete control system in the unified management center in Rome ( now up the
200 PABX are monitored ),
•
Decrease the number of single line connection/link throw the public operators using
the capability of multiple trunk E1,
• Encrease
the capability of own internal phone network for the inter-Departmental
communications,
•
Full integration with the GSM-R mobile network,
•
36
Blocking of the dial-up connection to the public internet.
Italy
Figure 9: Regional Codes Voice Fixed Network (2007)
Brennero
854
Vipiteno
854
Sondrio 823
Chiasso
Luino
843
Domodossola
862
Aosta
29xxx
Bardonecchia
Ivrea
27xxx
243xx
Varese
26xxx
TO
2xxxx
2xxxx
CN
Asti
460xx
42xxx
Limone
410xx
819
2xxxx
35xxx
MI
32xxx
350xx
AL
Novi
350xx
823
XXMiglia Imperia
843
863
Stradella PC
854
Fidenza
VR
822
Legnago
834
811
876
Carpi
Crevalcore
884
821
Reggio E.
817
833
Fornovo
Modena
Chiavari 811
Lucca
Levanto 811
La Spezia 813
827
Imola
821
822
Cesena
Rimini
809
807
Pesaro
Fano
967
823
Falconara M.
863 Pontassieve
825
868 Arezzo
Siena 845
Pisa 821
AN
Livorno 855
892
Sassari
854
Campiglia 856
Olbia
890
811
Civitavecchia 855
884 Fara S.
Ponte G. 872
825
891
894 Abbasanta
Macomer
894
Oristano
846
S. Gavino
849
Decimomannu
848
NA
801
Trapani
Isernia
Campobasso
835
835
873
Salerno
Battipaglia
872
874
Agropoli
873
Vallo
871
Sapri
871
Diamante
872
Roccap. 805
808
Castelvetrano
830
S. Agata
833
Patti
856 Caltanis.
Canicattì
835
Milazzo
Vibo M.
826
Gioia T.
Vila S.G.
802
811
Acireale 842
Taorm. 825
856
837
Savignano
801
Rocchetta 873
Avellino
S. Nicola M. 877
Giulianova
833
Pescara C.le
835
Vasto
875
Sicignano
Spinazzola
876
Potenza Inf.
Cosenza
S.Severo
831
Foggia
815
Cerignola
814
Barletta
811
Molfetta
Gioia C.
847
Taranto
860
855
801
810
834
999
821 Monopoli
Metaponto
Sibari
Crotone
Francavilla F.
826 Ostuni
822 Brindisi
823 Lecce
CZ Lido
Badolato
Roccella
903
848 CT
807
Agrigento
Gela 859
Caltagir.
844
Ragusa 847
848 Bicocca
843 Lentini
BA
864
858
817
834
Termoli
835
876 Potenza Sup.
Grassano 856
810
CZ
832
846
Mercato S.S.
878
870
825
S.Benedetto T.
842
836
841 Torre A.
Lamezia T.
Messina
805
802
Termini I. Cefalù
836
834
Benevento
834
854
843
Cancello Marcianise
Nocera I.
Paola
904
832
Avezzano
804 Roccasecca
826
985
841
802 Frosinone
Vairano 808
Aversa
803 Ce
822
Villa L.
PA
Sulmona Torre P.
841
887 Ciampino
826 Latina
828 Formia
Na C.F.
804
819
Tivoli
Civitanova M.
828
Aquila
816
809 Cassino
Na S.M.la Bruna 842
821
Macerata
Rieti
825 Campoleone 801 Colleferro
RM
945
Pa Notarb.
813
970
Ozieri-Chilivani
851
Terni
Orte
Orbetello 858
926
822
Foligno
861 Orvieto
Viterbo
Grosseto 857
897
Fabriano
Perugia
869 Chiusi
Cecina 854
Golfo A.
935
TS
834
824
Viareggio 826
831
Monfalcone
805
866 Prato
844
814
Portogr.
Ravenna
805
Faenza
806
Forlì
Empoli
Sarzana 812
Gorizia
822
Lugo
808
870
Udine
Villa Opicina
832
Ve S.L.
VE M.
865 S.Benedetto S.
Pistoia
810
845
S. Donà
934
841
875
Sestri L. 822
856
841 Loreo
Porretta
816
Pontremoli
843
Cervignano
Rovigo
Ferrara
822
921
861
860
Pordenone
Monselice 841
Ostiglia
Parma
Savona
Albenga
852 Piadena
875
821
844
842
Grisignano PD
Vicenza
Casarsa
TV
Camposamp. 842
845
830 MN
823
Conegl.
Castelfr.
891
893
Peri
861
Fiorenzuola
854
Lodi
GE
958
838
Cremona 899
858
824
863
Desenzano
933
854 Ronco S.
Ovada 835
821
831
Treviglio
Teglia
826
S.Gius
400xx
Pavia
Abbiat. 814
Voghera 817
Casale M.
Arquata 811
850
852 Tortona
Brà Acqui
430xx
894
Brescia
847 Gemona
Sacile
892
817 Rovereto
912
560xx
322xx
Nizza
450xx
56xxx
Valenz Mortara
Mondovì Ceva
842
2xxxx
Borg
54xxx
Trof.
229xx
Fossano
511xx
Chivasso Santhià
959
Carmagn.4xxxx
873
Rhò
825
895 Montebell.
Cittadella
811 Trento
Pontebba 841
Vittorio V.
898 Belluno
Bassano G.
811 Mezzocorona
Bergamo
897
Vercelli Novara
853
822 Bolzano
Carnate
810
Monza
2xxxx
Bussol.
823
Merano
821 Lecco
816
853
Tarvisio 845
897
850 Bressanone
822 Colico
Como
841
Arona 861
Biella
Gallarate 841
853
Fortezza
818
Calalzo
Brunico S. Candido
RC
841
Siracusa
37
38
Poland
in Poland
1 - About us
OUR COMPANY’S mission is to offer high quality modern telecommunication services for
the needs of railway companies, institutional and individual clients.
•
„Telekomunikacja Kolejowa” spółka z o.o. state owned company, is one of the two
polish telecommunication companies qualified and entered by the Goverment to the
register of special economic – defense purpose companies, because of the ability to
administer a safe telecommunication network (Dz. U. no 13, pos. 122).
•
The company’s business capital amounts to 193 025 000 PLN.
Railway Telecommunications Ltd. is a telecommunication operator functioning on the
basis of Chairman of Post Office and Telecommunication Regulation Office Decision
No 111-213/97(2)/03/Z from 25th of February 2003 which is a license for running of
stationary public telephone network. It is also functioning on the basis of handed over
Telecommunication Regulation Office applications for carrying out the following activities:
•
•
•
running and providing services for nation-wide telegraph network,
running of public data transmission network,
providing telecommunications services, also international services:
- data transmission,
- telecommunication circuits lease,
- Internet network access ,
by using data transmission network and circuits which are leased from the other
entitled operators .
39
2 - History
•
01.07.1998
Railway
Telecommunications
was
a
part
of
Automatics
and
Telecommunications Department, from which Railway Telecommunications Divisions
were formed.
•
01.04.1999 Department of Telecommunications was formed.
•
01.01.2000 Department of Telecommunications and IT Department were united.
•
01.10.2001 Railway Telecommunications operates as a commercial company within
the confines of PKP Co. under the name of Railway Telecommunications Ltd.
•
“Telekomunikacja Kolejowa”spółka z o.o. is multi-divisional Company which is made up
of eight TELECOMMUNICATIONS DIVISIONS in: Warsaw, Lublin, Kraków, Katowice,
Gdańsk, Wrocław, Poznań, Szczecin.
Figure 10: Divisions seats and operation areas
40
Poland
3 - Offer
We offer provision of services in the fields of:
•
international and domestic:
- optical ducts lease,
- digital lines lease,
- data transmission.
•
nationwide Internet access;
•
telephony;
•
Call Center:
- consumer’s service,
- telemarketing.
•
maintenance, repair and measurement of:
- telecommunication lines,
- telecommunication equipment.
4 - Infrastructure
Railway Telecommunications manages Polish nationwide Telecommunication networks:
•
Cable network which contains of: fibre optic cables of total length of 6000 km, fibre optic
cables in local rings - 400 km, long distance copper cables, local copper cables network
(of total length of 26 000 km);
•
Transmission network is built with using systems: DWDM, SDH STM 16,SDH STM 1,
PDH 140 Mbit/s, PCM terminal equipment;
•
Data transmission network operates in protocols: MPLS, IP, ATM, Frame Relay and
X.25;
•
Telephone network up to 120 000 numbers, with 80 000 subscribers and 65% of them
is connected to digital exchanges.
41
Figure 11: Fibre optic cables network
5 - DWDM network
In August 2001 Railway Telecommunications Ltd. set in motion
first DWDM fibre
transmission system in Poland of transmission speed n x 2,5 Gbit/s and SDH STM-16
system.
The network managed by Railway Telecommunications, equipped with modern optical
DWDM equipment, connects Poland to the world fibre optic network. This is the first
of this type optical network in Poland, which provides international, interurban
and local data transmission.
42
Poland
Thanks to these investments we can offer a wide range of services connected
with the transmission speed lease range from E1, through E3, STM-1, STM-4,
STM-16 up to Lambda (λ)-(2,5 Gbit/s)– in national and international relations.
Figure 12: DWDM, SDH STM16
43
The Company as the first telecommunication carrier offers international
connection of
10 Gbit /s
transmission speed
Figure 13: International connection
44
Poland
Figure 14: Transmission network
45
Figure 15: ATM, FR and IP network
46
Poland
Figure 16: X.25 network
47
6 - Telephone network
is built on the basis of:
•
•
•
•
•
EWSD and 1000 E10 MM transit exchanges,
Meridian 1 exchanges,
DGT 3450 exchanges,
MECT 800E exchanges,
analogue exchanges.
IN
S y m bo ls :
Trans it exchanges
Telec om munic ation network s witc hes
IN
Inteligent platform
Figure 17: Telephone network
48
Poland
7 - Development plan of telecommunication network
Railway Telecommunications wishing to satisfy its clients’ needs is developing and
modernizing network infrastructure. The transmission speed and availability of links is
being increased. The Company as the first telecommunication carrier offers international
connection of 10 Gbit/s transmission speed for academy environment.
•
Till the end of 2005 the next 2250 km of lines is going to be put. We are planning mode
fibre optic cables installation, as per order ITU-T G.652 and also ITU-T G.655.
•
Digital transmission network based on DWDM technology with STM-16 system is also
during development.
8 - Network safety
The networks managed by Railway Telecommunications are characterised by high quality
(QoS) and safety.
•
98% of fibre optic cables are put into the ground. That’s why they are less sensible to
mechanical damages caused for example by unfavourable and changeable weather
and climatic conditions.
•
Transmission network is built in ring topology (in backbone network and local rings).
Thanks to using such construction there’s always data transmission reserve way.
•
Transmission network is managed with the help of dedicated system from NMC level,
which has the ability of quick remote network reconfiguration and detecting all the
abnormality in its functioning.
•
For increasing safety of transmission network DCN router network has been created.
It guarantees management system communication continuity with the regional network
elements. It also provides the whole transmission network control while emergency
situations.
49
9 - Network safety
•
•
•
Access time for digital channels depending on class service up to AT>99,95%.
Maximum error rate (BER) for digital links - (BER) < 10 -12 .
Synchronization of network is consistent with ITU-T G.811. PRC clocks are built on
SSU synchronized GPS receiver.
•
Digital channels meet recommendation ITU -TG.821/826 i ITU-T M.2100. Access
interfaces for E1, E3, STM-1, STM-4 i STM-16 channels are consistent with ITU-T
G.703 and ITU-T G.957 recommendation.
•
We offer opportunities of setting up safe separated IP VPN networks on the basis of
MPLS technology.
•
There are also opportunities of signing SLA (Service Level Agreement), which guarantees
individual safety condition of leased network.
50
United Kingdom
in United Kingdom
1 - Introduction
Historically the UK rail’s network was developed by the interconnection of a number of
smaller networks.
These networks were designed and incorporated alongside Signalling schemes. This has
led to a disparity in chosen systems and in some places has led to a reliance on Public
Telephone Operators (PTOs) to provide extra network capability.
Today Network Rail is in the process of replacing the legacy fixed network with a network
that will be able to handle every increasing demand on capacity and unify the rail’s use
of transmission technologies. This project, FTN/GSM-R, will also provide the base from
which to launch new signalling systems and support other applications necessary to run
the operational railway.
This document will try and capture the current network topology and the interfaces we
share with the international community.
2 - Current Systems
Network Rail uses a number of different transmission mediums on which to carry its circuits.
Traditionally copper cable has been used past because of its availability and cost. With
the relative cost-benefits of fibre to copper improving, fibre has been introduced on new
schemes where the location and capacity required meets the business case. So depending
on the location, circuits may be transported over copper, fibre or a mixture of the two.
We have 30-channel PCM systems (GEC / Marconi / Ericsson) still in operation on the
network infrastructure. More predominantly we use Nokia PDH / SDH equipment.
In some areas the Dynanet systems has been employed. This “Dynamic Node Equipment”
is effectively a cross-connect with drop and insert functionality. It is capable of dealing with
both copper and fibre 2Mb/s streams.
51
Figure 18: Nokia Dynanet
All these systems are now life expired and all
the associated circuits will be migrated across
to the new Fixed Telecoms Network (FTN).
The FTN is currently being deployed - some of
the stages have already been constructed and
commissioned. The FTN consists of Alcatel
– Lucent SDH and PDH nodes, with a series of
STM16 rings, and STM1 access rings.
The Fixed Telecom Network will also provide a
number of operational Ericson MD110 switches
for voice services as follows.
Operational Switches
These will provide UK wide services from locations using Channel Associated Signalling
(CAS) extensions. Typically these will serve lineside phones, signal box ETDs, electrical
control room ETDs and small/depot offices.
Transit Switches
These route calls around the network; allowing calls originating from one type of switch to
be connected to phones on another type. The switches have DPNSS/QSig links to the core
business and operational switches. The transit switches also allow connection into the
GSM-R system, the Global Crossing ETD network, network and emergency operators.
There are currently a number of Business switches at key Corporate Offices which connect
into the Global Crossing Network via DPNSS. Future deployments in large corporate offices
will be by using VoIP. To date a Nortel VoIP solution has been provided in Manchester,
which currently connects into the rest of the network via DPNSS.
The two operational transit switches will have connections to the Public Switched
Telephone Network (PSTN) and the legacy voice ETD network.
52
United Kingdom
Depending on the availability of network resources and the demand in the
local area, each business switch has direct connections to Global Crossing’s ETD
network, PSTN (run by British Telecom) and its associated local business switches.
Network Rail has adopted the Ericsson MD110 PABX, used throughout the railway industry,
but it has been designed so that supplier diversity can be achieved if required.
Core Business
Transition
2Mb Connection
(Transit)
HQ, Euston
East Anglia House,
Liverpool St
Waterloo
James Forbes House,
Southwark
Figure 19: Existing fixed voice switched network
The future network aim is to extend the existing voiced network to each region and include
the introduction of operational switches.
53
3 - Beyond Network Rail
Our network links into Global Crossing’s ETD network via a number of DPNSS links between
switches located around the infrastructure. In some places we use British Telecom (BT)
links to add diversity or to join into the Global Crossing network. The diagram below
abstracts our connections to Global Crossing.
Other
Networks
National
Radio
Network
Legacy
Switch
x 21
AXE10
AXE10
Centralised
Operator
AXE10
AXE10
AXE10
Legacy
Switch
MD110
MD110
VOIP
MD110
Network Rail
Assets
C7 Interconnect (DPNSS
encapsulated)
Global Crossing
Assets
DPNSS Links
Figure 20: ETD Network DPNSS Connectivity
Network Rail’s assets interface with Global Crossing’s AXE10s via two DPNSS link to
allow for diversity. The routing of these connections are dependent on the availability of
resource in the surrounding area and the locations of the AXEs.
The Global Crossing network (for the Railways) is parented with Europe via an ISDX
(v3.4 software) gateway switch at Waterloo, London. The switch uses a nonstandard QSig signalling protocol to transmit the data via two links to Ashford.
From here it is transmitted to Dollands Moor using Network Rail PDH
54
United Kingdom
transmission before being forwarded to France on Eurotunnels transmission
network through the Channel Tunnel.
2 x QSig links
Network Rail PDH
SNCF
Transmission
Figure 21:
UK Rail Telecommunications Link to Europe
55
56
PETER Member LIST
Company
Contact
UIC (The Chairman)
Paolo de Cicco
UIC
Dan Mandoc
ADIF
Alfonso Diez Perez
ADIF
Carlos Rincon
ADIF
Luis Garcia Tassias
BANESTYRELSEN
Lau Rentius Kenneth
BANVERKET
Peter Carlsson
BANVERKET
Ulf Hellström
BANVERKET
Tord Nilsson
BDZ
Valentin Staykov
CFL
André Feltz
CFL
Henri Werdel
CFR Tel.
Virgil Andronache
DB Netz
Klaus Konrad
DB Systel
Dirk Brucks
ET
C. Vandenbussche
HZ
Mladen Strizak
LDZ
Dragana Stosic
MAV
György Gajdos
MAV
Gellert Halmai
MAV
Gabor Pete
Network Rail
Stephen Hailes
NRIC
Valentin Doytchev
ÖBB
Herbert Müller
ÖBB
Ernst Strommer
PKP
Piotr Konstanty
PKP
Ryszard Rudnicki
PKP
Janusz Walicki
Railtelia Ltd.
Irja Koskela
REFER
Mario Alves
REFER
Fernando Leal
REFER
Pestana Neves
RFI
Carlo Caputo
RFI
Simone Carnevale
RFF
Dominique Perrin
SBB Telecom
Paul Messmer
SBB Telecom
Hans-Peter Vetsch
SBB Telecom
Helmut Wehren
SNCB/B-Telecom
Alex Raviart
SNCB Holding
Vincent Caudron
SNCB Holding
Frans Van Geel
SNCF
Remi Bevot
SNCF
Stéphane Goueffon
SNCF
Alain Guillaume
SZDC
Arnost Dudek
ZSR
Vladimir Milosovic
ZSR
Peter Predac
57
ETF
EDITIONS TECHNIQUES FERROVIAIRES
RAILWAY TECHNICAL PUBLICATIONS - EISENBAHNTECHNISCHE PUBLIKATIONEN
16 rue Jean Rey - F 75015 PARIS
http://www.uic.asso.fr/etf/
Printed by
Xerox Global Services France
16, rue Jean Rey 75015 Paris - France
March 2008
Dépôt légal March 2008
ISBN 2-7461-1453-4 (English version)

the publication

Transcription

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