Nokia Networks
GSM-R – railway communication solutions from the market leader
on the fast track to railway excellence with GSM-R from Nokia Networks Communication and control is vital to every enterprise, but none more so than railway operators. The ability to convey information on the go, across network boundaries and international borders and at high speeds, is the key to maximizing operating efficiency.
Our unflagging commitment to GSM-R Railway operators have long known we understand their com needs, and they have long enjoyed the benefits of the powerful com tools we put within railway operators’ easy reach. Many companies’ skill set encompasses communications; none can bring to the table our formidable transportation expertise. Welcome to Nokia Networks. The skill set from the market leader Our product range encompasses the latest technology developed by experts in railway communication and GSM-R terminals. This combination of peerless expertise in mobile communications and railway engineering enables us to provide the very best tailored solutions. Nokia Networks’ combined skill set not only make us a first-choice supplier of voice and data networks, it has also earned us a worldwide reputation for excellence in railway communications.
ticketing, cargo tracking, and passenger information systems. They cover GSM-R networks’ lifecycle fully, from design, implementation, and operation to longterm maintenance, with all the tools necessary for planning and managing networks and providing supporting services. Shaping the future with standards Nokia Networks designs, builds and maintains end-to-end solutions that raise the bar for others to reach. As an evolutionary force in mobile com and a charter member of GSM/ GSM-R standardization bodies that are driving railway relevant standards such as ETSI and EIRENE. Nokia Networks supports the most important railway associations, UIC and ERA, in defining standards for next generation railway networks.
Nokia Networks has a formative hand in shaping GSM-R strategies, standards, and interoperability principles. To this Nokia Networks, the world market end, we joined forces with leading leader in GSM-R, offers premium suppliers in the GSM-R Industry Group solutions comprising telecommunication (IG) and represent this group in the consultancy as well as train control and ERTMS MoU Steering Committee. value-added services such as automatic
Evolution to GPRS and LTE As today’s GSM-R products move towards the use of modern hardware, we also expect GSM-R to evolve further, both functionally and in network technology. IP transport, introduced in R4 core networks, is also available in mobile backhaul connecting base stations. Investigations are already starting to define the requirements for a next generation railway telecommunication system. Nokia Networks expects this system to be based on LTE technology, the dominant mobile broadband communication technology for the near future – not only for the public market, but also for mission critical public safety communication. Nokia Networks is driving the standardization that will see LTE tailored for the demands of the public safety market, where we see synergies in requirements and technical realizations applicable to railway communication. A first step for railway networks will be the introduction of ETCS to run on IP transport (GPRS bearer), which could be served seamlessly on LTE networks relying solely on IP transport technology.
GSM-R infrastructure (radio/core/data portfolio)
Core
IN
BSC BTS
BTS
BTS
Dispatcher equipment
Cab radio
Handheld, shunting terminals
Approved end-to-end solution for 20 countries
Run by the European Commission, ERTMS MoU Steering Committee makes top-level recommendations for GSM-R and ETCS implementation across Europe. As GSM-R IG’s delegate to the European Railway Agency (ERA), we drive ongoing GSM-R standardization efforts, and are regular members of both the ERTMS Control-Command & Signaling Working Party (CCS WP) and the Control Group (CG). The International Union of Railways (UIC) forms various GSM-R expert groups tasked to propose modifications, amendments, and improvements to the GSM-R specification and interoperability tests. GSM-R IG and these UIC groups (FG, OG, and ERIG) engage in a spirited cooperation, with our experts playing a key role. Additionally we are driving all relevant railway standardization in 3GPP and ETSI (TC RT). Experience teaches that open standards drive down the costs of developing and deploying technology. With our customers’ best interests in mind, we advocate open standards and promote interoperability to transcend the boundaries of technology, vendors, and national frontiers. Nokia Networks’ efforts have paid off: Now that all GSM-R interfaces have been specified and standardized, operators have access to an open, interoperable and international system that drives competition and affords them considerable savings.
Nokia Networks – the first and only choice in GSM-R solution Railway operators want robust, mature communication; signaling and roaming solutions that have proven their merits in the field. They want to enjoy high performance capability, scalability, versatile configuration options, utmost reliability and efficient, economical maintenance. And they want professional planners, consultants and optimization engineers to provide premium-quality services at a fair price. We deliver the goods. With worldclass engineers, unrivalled crossindustry skills, peerless transportation experience, and leading-edge communication expertise, we can help you reap the rewards of premium GSM-R solutions. Best of all, we are able to deliver and install the full package from front to end – switches, base stations, service and management platforms, data transmission components, controllers, and even mobile phones for conductors. This unique combination of skills, services, and staff – paired with end-toend solutions and open technology – has made us the GSM-R leader. Whatever your mobile com needs, Nokia Networks has what it takes to satisfy them.
Tried, tested and trusted Every solution is only as reliable as its constituent parts. We deploy strictly proven equipment in commercial projects. When you opt for GSM-R by Nokia Networks, you’re opting for reliability. Our robust base stations predicate on our public GSM range, which has been deployed in countless installations all over the world. Not only have they proven their merits in realworld applications, they benefit from advances in public GSM, keeping your communications future wide open. Our GSM-R system is designed to integrate GPRS and EDGE. Investments leveraged today will facilitate strategic planning tomorrow. And our mobile core delivers equally impressive performance. Known as the most reliable on the market, Nokia Networks GSM-R core network components’ dependability, scalability and wealth of features stand out in the crowd. Satisfying demanding railway reliability requirements, they deliver geo-redundancy for the whole portfolio. This allows disaster-proof operation of GSM-R even in the event of fire, flooding or earthquake, as the systems are replicated locally and at the remote location, working simultaneously with identical databases.
GSM-R – railway communication solutions from the market leader
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GSM-R infrastructure contracts First in innovation, first to installation Siemens was the leader in MORANE trials and blazed the trail in commercial GSM-R deployments, rolling out a full-fledged infrastructure in 1998, deploying the first commercial GSM-R system in Sweden in 2000, and bringing the first high-speed GSM-R application on line in Spain in 2003.
Sweden, Trafikverket Sweden’s national railway Banverket commissioned a GSM-R network in 1998, with the world’s first commercial deployment following in 2000. Today a nationwide voice and data system is up and running, and cross-border tests with Nordic countries have met with success. Netherlands, Pro Rail Several tracks are equipped with ETCS, such as the 200 km high speed line. The project, encompassing switching centers, IN systems, GPRS radio base stations, VMS and SMS, was completed in 2004. A complete network and fault management system to provide operating services was included. Regular system upgrades ensure the GSM-R network complies with all national and international railway communication standards. In 2012, further redundancy was added to increase availability. Spain, ADIF The Spanish rail authority, ADIF, used Nokia Networks for its first GSM-R implementation, consisting of a fully redundant Core Network and the Madrid-Barcelona High Speed Line in
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Nokia Networks is first in the lab with GSM-R technology, and with commercial projects in 20 countries to credit, we are also first in the field. Covering tens of thousands of track kilometers, countless tunnels and untold trains, Nokia Networks GSM-R networks serve railways in Europe, the Middle East, Australia and Asia. Our track record in GSM-R projects is unrivalled.
2000. Subsequently, Nokia Networks was awarded many projects to extend reach to major cities, as well as the suburban rail networks of Madrid and Barcelona, all of them based on a turnkey model. In 2013 Nokia Networks finished the Albacete-Alicante HSL project. Italy, Rete Ferroviaria Italiana and SIRTI Highspeed Italy’s national railway operator awarded a contract in 2002 for a full turnkey GSM-R system including seven MSCs, three HLR and two IN (in a full geographical redundancy), 1100 radio base stations, VMS, SMC, billing and an interception center, as well as network and fault management systems and operating services. High-speed lines are now running from Rome to Naples, Turin to Milan and Milan to Bologna. Switzerland, SBB The Swiss national railway SBB opted for a nationwide GSM-R project covering main lines in 2002, implemented in five phases over the ensuing years. The first lines are up and running with full ETC operation. Tests across neighboring countries’ borders met with success.
GSM-R – railway communication solutions from the market leader
Belgium, Infrabel/SNCB In 2003, Belgium’s national rail company Infrabel/SNCB chose Nokia Networks as the turnkey supplier for a nationwide GSM-R system. The contract encompasses all GSM-R network elements and professional services. In 2012, it was agreed to extend the network with Flexi Base Stations, including network operation. Finland, LiVi In 2003, the Finnish Transport Agency Likennevirasto commissioned Nokia Networks to set up a countrywide GSM-R network including line communication, shunting and maintenance. The roll-out was completed in December 2011.
Norway, Jernbaneverket The Norwegian Rail administration Jernbaneverket opted for Nokia Networks to roll out a national GSM-R system comprising more than 650 tunnels. The contract covers all GSM-R network elements, CAB radios for locomotives, and all civil engineering works. India, NFR, ECR, NCR, NR Seeking to adopt the GSM-R standard, India’s Ministry of Railways kicked off the first of several projects to equip large parts of the rail network with GSM-R infrastructure. Nokia Networks is supplying all operational components ranging from switching centers, IN platforms, base stations, and service and management platforms to base stationto-controller data transmission elements and mobile handsets for drivers. In 2010 an additional contract for the GhaziabadMughalsarai section of North Central Railways as awarded to Nokia Networks. Germany, Deutsche Bahn In 2008, DB AG awarded Nokia Networks a contract to extend its GSM-R communication system: The contract
consists of delivery, installation and integration of an end-to-end GSM-R radio solution, providing upgrades, services, and long time support. China, Ministry of Railways In 2007, the Chinese Ministry of Railways and China Railway Signaling and Communication Corporation tasked Nokia Networks to provide the GSM-R network for a high-speed line connecting Wuhan and Guangzhou. Nokia Networks will supply an end-toend solution including base stations, a core network, IN and an advanced tunnel communication solution and services. This project made IN, HLR, DNS, located in Beijing and Wuhan, work to provide geographical redundancy and serve China’s overall GSM-R network. Nokia Networks’ first project was the line from Jinan to Qingdao in 2004, with others including the Beijing-Tianjin high-speed line, the Wuhan-Guangzhou line and the JingHu line from Beijing to Shanghai. As of now, seven of 15 GSM-R core nodes were supplied by Nokia Networks and today it has three GSM-R projects under construction in China.
Saudi Arabia, Saudi Railways Organisation Saudi Railway Organization contracted the Dammam to Riyadh line in 2005. The first GSM-R/ETCS project in the Middle East, this milestone in modern train control was jointly achieved by Nokia Networks and Siemens Transportation. Saudi Arabia, North-south mineral line In 2009, the North-South Railway GSM-R contract was awarded which covers an area linking northern Saudi Arabia with the Gulf Coast and Riyadh. The solution includes the supply base stations, Intelligent Network (IN) platform with Rail applications, SMSC, OTA, dispatchers, voice recorders, switch/ radio commander, radio engineering, network design, installation and a threeyear Care contract. This will ensure a reliable network that will allow seamless communications on board trains running at speeds of 200 kmph.
GSM-R – railway communication solutions from the market leader
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GSM-R infrastructure from Nokia Networks Australia Belgium China Denmark Finland Germany Greece India Italy Netherlands Norway Poland Portugal Romania Saudi Arabia Spain Sweden Switzerland Tunisia Turkey
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GSM-R – railway communication solutions from the market leader
Greece, ERGOSE SA The Greek railway ERGOSE SA set out to build a GSM-R network on the main north-to-south line in 2006. Nokia Networks is supplying the full turnkey GSM-R solution, including base stations, core network, IN, GPRS and railway tunnel communication solution and services, as well as a three-year network operation contract. Turkey, TCDD TCDD opted for the full GSM-R solution, including base stations, a core network, IN, and advanced tunnel communication solution and services provided by Nokia Networks. Completed 2008, this joint project with Siemens covers the highspeed line between Ankara and Eskisehir. TCDD is considering equipping another part of tracks with GSM-R. Tunisia, SNCFT In 2008, the Tunisian Railway SNCFT chose Nokia Networks to deploy a nationwide GSM-R network, with the first stretch running from Tunis to Sfax. This turnkey contract encompasses an end-to-end GSM-R solution including hardware, software, and services. Bringing the GSM-R standard to Africa, this digital communications solution improves the security, reliability, and safety of rail services. Australia, PTV Victoria The Department of Transport Victoria picked Nokia Networks to upgrade its analog railway communications and roll out Australia’s first digital GSM-R system. Further GSM-R trials and pilot systems are running in several countries worldwide.
terminals and voice recording equipment. To ensure network efficiency and stability, Nokia Networks will deliver a broad range of services including network design, project management, network implementation and maintenance. Ensuring stable and secure operations, the network will be built with high redundancy. The GSM-R network went live in January 2013, meeting the original time schedule. It covers large parts of rail track in Denmark and facilitates Banedanmark’s seamless transition to Europe’s future train control system. Romania (CFR) The project pilots the European Rail Traffic Management System (ERTMS) on the Buftea – Periş – Crivina – Brazi line. Nokia Networks provides two core and Intelligent Networks for redundancy, billing, SMSC, Voice Message and recording, cell broadcast, dispatcher, switch and radio commander. Nokia Networks supplies ten BTSs, two BSCs and appropriate transport, services for network integration, a three year care phase and delivery. Poland, PKP Polskie Linie Kolojewe The nation’s rail network management, Polskie Linie Kolejowe (PKP), is modernizing its high speed routes E-65 linking Poland’s capital, Warsaw, with the northern Baltic port of Gdynia and E-20, the country’s main West-East corridor.
Nokia Networks has been selected to provide its market leading GSM-R radio network equipment for both of them, the highly complex 35-station E-65 line and the stretch of E-20 linking Lowicz and Terespol. For E-65 Nokia Networks will provide GSM-R radio network equipment, including base stations, base station controller and the transmission backbone, as well as the dispatchers and handheld terminals. In addition, the company will deploy its maintenance system for railways (NetAct) and integrate ETCS Level 2 signaling for the GSM-R turnkey project. As a separate project, Nokia Networks will also help extend ETCS Level 2 system based on GSM-R radio over a link between E-65 and Gdansk Airport. As for E-20, Nokia Networks will provide GSM-R radio equipment including 49 base stations, a base station controller. It will also deploy NetAct and integrate ETCS Level 2 signaling on a turnkey basis. Top-drawer track record, world-class skill set All these success stories stand as a testament to our GSM-R commitment and GSM-R excellence. Our track record in designing, implementing, operating, and maintaining networks certainly speaks volumes about our experts’ ability to rise to all railway communication challenges. Together with proven partner companies we can provide the very best solution for your unique needs.
Denmark, Banedanmark In June 2010 Banedanmark, selected Nokia Networks to implement a country wide GSM-R network. Under the turnkey agreement, Nokia Networks will provide GSM-R switches, base stations, registers, its intelligent network system, short message service center, dispatcher
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The leading GSM-R solution The Nokia GSM-R solution is an advanced and mature solution to the communication challenges facing rail operators. As such, it comprises various state-of-the-art elements that are utilized both here and in many other Nokia Networks communications solutions installed around the world.
Geographic redundant R4 core Nokia Networks geographic redundant platforms include redundant hardware, functional units, data storage and software. Different core network elements are based on the same common COTS ATCA hardware platform. Nokia Networks uses the second generation ATCA platform, 10Gb fabric
These elements are in themselves flexible and are also designed to interplay and interconnect with one another – thus permitting maximum freedom in design – while offering the ultimate in reliability and availability. Interworking with other vendors is granted and proven in IOT campaigns. They include:
and 1Gb base Ethernet switching for all its products. The Nokia Networks GSM-R Core is fully based on the most modern open core (MSS-server, MGW, GGSN, SGSN) and virtualized platforms. This allows the implementation of multiple nodes on multi-purpose hardware.
Site 2
Site 1 NetAct™
GPRS The GPRS network, allowing the subscriber to access packet data services, employs two nodes, the Gateway GPRS Support Node (GGSN) and the Serving GPRS Support Node (SGSN). These enhance the network to fulfil ETCS level 2 requirements. The Nokia Networks GGSN is a highly intelligent node providing enhanced functionality such as QoS control at application level. Intelligent Network
NetAct™ NT HLR and IN
NT HLR and IN IP backbone
GPRS
GPRS
MSS & MGW
MSS & MGW
1
MSS GSM-R MSS
SGSN
MGW
GSM-R MGW
GGSN
SGSN
GSM-R MGW
GGSN
n
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GSM-R – railway communication solutions from the market leader
The Intelligent Network (IN) utilized is known as the Railway@vantage. This is an IN system dedicated to railways, being geographically redundant and specially tailored to GSM-R. It possesses all EIRENE (European Integrated Railway Radio Enhanced Network) features as well as many others also specific to railways. These include an Acknowledgement Center (ACKC) integrated into the IN, a direct interface to railway positioning elements allowing enhanced Location Dependent Addressing (eLDA) calls with exact train position, on-board functional calling and more.
Radio This high-availability communications element with 99.999% reliability and 0.08 minutes unplanned downtime per year brings market-leading functionality to GSM-R. The Base Station Controller (Flexi BSC) and the Transcoder and Rate Adaption Unit (TRAU) are implemented on one platform. Railways can choose delivery as separate elements or combined in one node. For interconnection, copper or fiber may be used, with the choice of SDH, PDH and IP (CESoP). This supports full IP connectivity for Flexi Base Stations, making the solution both cost-effective and future proof.
and an impressive temperature range (-35°C to +50°C, temporarily +55°C) it may be installed indoors or outdoors without the need for air conditioning. A fully functional macro-cellular BTS consists of only two logical modules which can be carried by one person. Capacity can be expanded easily simply by adding modules. The same modules are used in indoor and outdoor sites for macro- and micro-cellular solutions and can be installed on floors, walls, or poles. For coverage, the unit may even be distributed over a number of sites. For example, Nokia Networks’ Tunnel Solution is ideal for covering short and medium sized tunnels with no additional equipment. This covers the majority of railway tunnels (about 80%), thus reducing complexity and OPEX considerably while increasing network quality. Fixed transmission
The Nokia Networks Flexi Base Station modular design makes site acquisition and installation easier, speeding up the roll out of network coverage in a new area. Flexi EDGE Base Station allows the use of existing site space sparingly and efficiently. Delivered with IP55 protection
The major move in fixed transmission is towards IP and, to allow QoS, toward IP/MPLS networks. Nokia Networks evolved GSM-R network elements make use of this to suit the needs of the GSM-R operator. This introduces multiple connection possibilities on
Open Mobile softswitching for railways with ZERO outage
various service levels, offering high redundancy and the benefit of a multiple path environment. Transmission may be optical end-to-end via the numerous network nodes to further improve reliability and maintainability. Microwave transmission
Nokia Networks microwave transmission, implemented using the FlexiHopper family of microwave radios, is integrated directly into the BTS, thus requiring no footprint and making installation easier. Its network management is also highly efficient and cost-effective, since it utilizes the same management platform as the radio network. Network Management The Nokia Networks strategy is based on the unique NetAct® platform. This uses all element managers and features umbrella management that includes enhanced performance monitoring and disaster management capabilities.
NT HLR/One NDS and IN system NT HLR (OneNDS) and IN system are built on server blade architecture, making maximum use of virtualization.
Nokia Networks’ MSC/VLR is delivered as R4 MSS and MGW. This allows railways to use IP technologies and offers the operator, in combination with sophisticated pooling and load sharing, a disaster tolerant system.
Nokia Networks is using its globally successful geo-redundant subscriber database OneNDS. This can be distributed via two or more geographical locations in combination with the HLR front end to deliver a HLR with no single point of failure. This provides seamless operation, no matter which part of the system may fail.
Resilience mechanisms like MSS pooling, MGW cluster with virtual MGW concept and multihoming for BSC and SIGTRAN connections, ensure there is no single point of failure in the R4 system. Nokia Networks GSM-R core supports the GSM-R geographic redundancy concept as described in ETSI standards.
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• Broadcast point in BSS / Transcoder in MGW • Up to 20 dispatcher/group call • 1 CHM and 1.5 CHM even in the same network • Application data (for shunting) • enhanced Railway Emergency Call
Valueadded services
• Functional & location-dependent addressing • High-priority call confirmations • High-speed: 500 km/h
EIRENE functionality GSM enhancements for railways (by ETSI)
ETSI GSM functionality
• Voice Group Call Service • Voice Broadcast Service • Enhanced Multi-Level Precedence & Pre-emption • All functionalities can be used with GSM-R
Nokia Networks GSM-R: Value added services on top of a fully standard compliant solution Bringing unity to diversity with ERTMS
Safety features
Now that GSM-R has been selected as the data carrier for the ETCS signaling system standard, it is an integral component of the ERTMS (European Rail Traffic Management System, comprising both GSM-R and ETCS). The benefits are considerable, for example, a continuous flow of information can now be provided to on-board computers for calculating speed and braking profiles.
GSM-R markedly improves the security, reliability and safety of rail services. For instance, it significantly enhances communication with trains passing through tunnels, affording far greater safety in case of emergencies. GSM-R will eventually be deployed across entire continents. Its total interoperability and compatibility will vastly improve the safety and speed of all railway operational services. And train drivers will be able to communicate freely throughout their journeys, regardless of the country they happen to be in.
With fewer fixed installations along the track, ETCS is far more cost-effective than conventional trackside signaling. Communication between drivers and other parties is handled by staff operating from signal boxes or control centers, using a Dispatcher Terminal designed to make the most of GSMR’s advantages. In the event of an emergency, calls are recorded by an Acknowledgement center, allowing fault analysis after the incident. Cab Radios from partner companies play a vital role within the GSM-R system. These incorporate all the EIRENE standards, ensuring safe, easy and efficient operation in any rail network equipped with GSM-R.
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GSM-R – railway communication solutions from the market leader
We have the expertise it takes to master all railway communications challenges. With these skills and our imposing track record in designing, implementing, operating, and maintaining GSM-R networks, we are able to provide the solution that best satisfies your unique needs.
Abbreviations ASCI
Advanced Speech Call Items
BSC
Base Station Controller
BTS
Base Transceiver Station
CIU
Central Integration Unit
EDGE Enhanced Data rates for GSM Evolution EIRENE European Integrated Railway radio Enhanced Network eMLPP Enhanced Multi-Level Precedence and Preemption ERA
European Railway Agency
ERTMS European Rail Traffic Management System ETCS European Train Control System ETSI European Telecommunications Standards Institute GPRS
General Packet Radio Service
GSM Global System for Mobile communications GSM-R
The Nokia Networks performance promise Nokia GSM-R solutions help railway companies provide better, safer service at lower operational cost. We are a partner with a genuine interest in making railways more attractive, efficient, and profitable. We have the skills and portfolio to deliver the full end-to-end package to your doorstep, and the financial clout to invest heavily in R&D. What’s more, we have the consulting expertise and insight required to create smart business models that smooth the way to success. And we have the communications technology, turnkey experience, logistical reach and railway engineering know-how to deliver on the ultimate performance promise: Wherever you are, we’re nearby. And whatever you need, we’ll deliver it – on time, within budget and to your satisfaction. Our commitment to GSM-R will delight railway operators who partner with us. Enjoy the lasting returns this commitment to evolutionary development delivers, today and for many tomorrows to come. Start out with the solution you need now. As demand grows, you can easily satisfy your organization’s appetite for communication power by growing the solution as you go. And benefit from the lower cost, higher safety, greater freedom of choice, and more promising business opportunities that come courtesy of open standards. GSM-R has never sounded better.
GSM for Railways
GSM-R IG GSM-R Industry Group IN
Intelligent Networks
LTE Long Term Evolution Coms standard MORANE Mobile Railway radio Network for Europe OPEX
Operational Expenditure
SMS
Short Message Service
UIC
International Railway Union
VBS
Voice Broadcast Service
VGCS
Voice Group Call
COTS
Commercial Off The Shelf
ATCA Advanced Telecommunications Computing Architecture (or AdvancedTCA®) ®
CESoP Circuit Emulation Services over Packet PBX
Private Branch Exchange
RBC
Radio Block center
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Nokia Solutions and Networks Oy P.O. Box 1 FI-02022 Finland Visiting address: Karaportti 3 ESPOO Finland Product code C401-01030-B-201407-1-EN © Nokia Solutions and Networks 2014
About Nokia Nokia invests in technologies important in a world where billions of devices are connected. We are focused on three businesses: network infrastructure software, hardware and services, which we offer through Nokia Networks; location intelligence, which we provide through HERE; and advanced technology development and licensing, which we pursue through Nokia Technologies. Each of these businesses is a leader in its respective field. Nokia Networks is the world’s specialist in mobile broadband. From the first ever call on GSM, to the first call on LTE, we operate at the forefront of each generation of mobile technology. Our global experts invent the new capabilities our customers need in their networks. We provide the world’s most efficient mobile networks, the intelligence to maximize the value of those networks, and the services to make it all work seamlessly. networks.nokia.com Nokia is a registered trademark of Nokia Corporation. Other product and company names mentioned herein may be trademarks or trade names of their respective owners.
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