uk railway radio frequencies

A project Team was established within this project. that can pick up rail communication, but what they broadcast is limited and depending on where you live, may not cover your area at all. Lines are being shifted to a road channel / dispatcher channel configuration similar to CSX and other railroads. The MSF signal is transmitted from Anthorn Radio Station in Cumbria by Babcock International, under contract to NPL. For a better experience, please enable JavaScript in your browser before proceeding. The group had the task to prepare a set of Requirements, which would mainly describe the mandatory features necessary for interoperability. Works on any PC or Mobile running Windows, Mac, IOS, Android and more. endstream endobj startxref 3,118. WebRadio Electronic Token Block is a system of railway signalling used in the United Kingdom. We recommend buying a railroad scanner with at least 200 channels available for programming, which every rail scanner we offer has: There are 97 channels that the American Association of Railroads (AAR) has assigned for rail communication. The system was also used on two other British rural lines: the East Suffolk Line, where the control centre was at Saxmundham, and the Cambrian Line from Shrewsbury to Aberystwyth and Pwllheli, where the control centre was at Machynlleth. All rights reserved. The FG takes towards specification evolution to ensure consistent railway operation. Whether youre growing heirloom varieties or hybrids, tomatoes offer something for everyone. The 5351.5 5366.5kHz WRC-15 allocation is not in effect in the UK, so stations must adhere to the frequencies set out in the licence schedule. Frequency License Type Tone Alpha Tag Description Mode Tag; 160.290: KIF838: BM: AAR 012 : Switching 1 (east end) FMN: Railroad: 161.010: WPAV387: BM: AAR 060: Yard operations: FMN: Railroad: 161.160: KGU606: BM: AAR 070: Yard operations: FMN: Railroad: 161.220: BM: CSQ: AAR 074: Switching 2 (west end) FMN: Railroad: Bank 8 - Amateur Radio Frequencies For Railfans. Data transmission is made of periodical TDMA frames (with a period of 4.615ms), for each carrier frequency (physical channel). 2. GSM-R permits new services and applications for mobile communications in several domains: It is used to transmit data between trains and railway regulation centers with level 2 and 3 of ETCS. A handful of states have restrictions regarding using a scanner in your vehicle, so here is a, detailed explanation of scanner laws in the US, Over 99% of all railroad communication can be picked up with an. 148 457.900 Car Dept. They areunlikelyto give operator names or locations but will often exchange informationon equipment andaerials. Beardstown Subdivision - Bushnell, IL to Paducah, KY, Bluford Subdivision - Metropolis, IL to Fulton, KY VHF/UHF UK General Frequencies Popular usage by various interesting users throughout The UK VHF 164.0500 164.0625 169.0125 169.0625 169.0875 169.3125 173.0500 173.0625 173.0875 Nov 21, 2007 #2 UHF 449.3125 449.4000 449.4750 461.2875 461.3750 461.4500 462.1000 JohnUK 323 Advanced Member Apr 09, 2009 #3 UHF UKG Selecting a USB frequency from the table above will ensure compliance and is largely compatible with allocations in other countries also. This MoU was signed at that time by 32 railways all over Europe. End call cause Normal, ended by user, mobile station power off by user, power off due to low battery, ), On Sunday, 10 June 2007 at 06:43, the first high speed train to run on it was the, On the same day, at 07:15, it was the opportunity of the, A fully functional GSM-R system had been on trial on the, This page was last edited on 26 February 2023, at 10:35. The most comprehensive and up to date UK radio scanner frequency database covering WTR, PMR, Airband, Airports, Air Control, Mil Airband / Airfields, Ham and more. WebCurrent Database Statistics. To develop the detailed specifications and to validate that these EIRENE Functional Specifications could be transferred into technical implementations, following an European Call for projects launched in 1995, a consortium of Railways, GSM suppliers and Laboratories teamed up for this answer and successfully get the allocation of this European Project in 1996. The token is then transmitted to the train by radio. The aim of this project was, to specify the requirements for mobile networks which would both fulfil the needs of railways and ensure interoperability across borders. Railroad Frequencies & Rail Scanning Ultimate Guide, surrounding it can be a bit overwhelming, so we gathered all of the information you need to choose the. 28,480. Learn more about Mailchimp's privacy practices here. That means that all digital scanners can also pick up analog, but youre a smart cookie, you knew that. The used modulation is GMSK modulation (Gaussian Minimum-Shift Keying). [29], Public Transport Victoria has installed a Digital Train Radio System (DTRS) on the Melbourne train network with GSM-R to replace the old system called Urban Train Radio System (UTRS). See more resources, including a PDF version of the table Search spectrum Choose a predefined range or specific frequencies to Loading Cairo Subdivision - Cairo, IL to Fulton, KY As a Regulation and no longer a Decision, they will become in force at their publication in the European Official Journal. As with the WARC bands at 10, 18, and 24MHz, there should be no contestactivityon 5MHz. This creates a high degree of redundancy and higher availability and reliability. It is the latest and greatest analog scanner. The G4S security in my local jobcentre use 461.300, I'm presuming it's nationally used. We discuss different frequency bands in greater detail later in Chapter 7 of this article, Railroad Scanner Frequencies. endstream endobj 9819 0 obj <. I kept a hold of it anyway, and later found they do use it. This UK Interface Requirement contains the requirements for the licensing and use of Short Range Devices in the specified frequency bands. Railroad scanners are like an AM/FM radio in that they have a certain number of preset channels you can program. All handheld railroad scanners use AA batteries. WebRadio Electronic Token Block is a system of railway signalling used in the United Kingdom. However, even at that time it was clear, that GSM could not fulfil all the requirements necessary for an efficient railway service. This ETSI Technical Committee is in a position to improve the standards ensuring full interoperability of the System. WebCommercial Radio: Domestic Phones: Fire Service: London Eye: London Underground: Long Wave Stations: Marine HF: Maritime Beacons: Marine VHF: Medium Wave New GSM-R features for mobile communication are based on GSM, and are specified by EIRENE project. To confirm you want to receive information from UIC please tick the option "Email": You can unsubscribe at any time by clicking the link in the footer of our emails. [19], As a result, there is an increasing trend towards monitoring and managing GSM-R interference using active and automated testing on board trains and trackside. GSM-R is part of the European Rail Traffic Management System (ERTMS) standard and carries the signaling information directly to the train driver, enabling higher train speeds and traffic density with a high level of safety. Radio Electronic Token Block is a system of railway signalling used in the United Kingdom. No practical reason other than that with the advent of digital communications it is largely becoming technically impossible for the amateur. Different groups make up the GSM-R market:[25][needs update], Transport NSW is installing a Digital Train Radio System (DTRS) throughout the 1,455-kilometre (904mi) electrified rail network, including 66 tunnels covering 70 kilometres (43mi), bounded by Kiama, Macarthur, Lithgow, Bondi Junction and Newcastle with GSM-R to replace the existing analogue MetroNet train radio. 222,908. The whole line can be operated by just one or two signallers and needs very little infrastructure other than the track itself, making it a very cost-effective method. It is a development of the physical token system for controlling traffic on single lines. It can be downloaded or read as a pdf file in a new tab here. It is also known as Radiator Charlies Mortgage Lifter, after Charles Byles (1890-1976), an auto mechanic, This website uses cookies for functionality, analytics and advertising purposes as described in our. It is defined by number prefixes. Activity on 5MHz over the last 10 years or more from the UK greatly helped the amateur service gain a 5MHz allocation at WRC-15. hb```E,, cb@ L See Railroad Scanner Frequencies below for how to find rail scanner frequencies. programming software is more plug-and-play copy-paste than other scanner software, but ultimately, theres still a learning curve. WebUse any web browser to search the WTR and find local frequencies to program into your scanner. WebUse any web browser to search the WTR and find local frequencies to program into your scanner. They are referenced in the Annex A of the CCS TSI as mandatory documents according to the ERA ERTMS/GSM-R CCM process, and considered as such as the GSM-R European baseline, approved by the RISC Committee on February 2016. Still have questions once youve read through this article? The Solid State Interlocking controlling the system prevents the issue of any token permitting conflicting movements. Talkgroups. 141 146.490 Primary Channel 142 146.565 Secondar (backup) Channel 143 466.050 Bank 8 - Amtrak (Los Angeles) 144 160.455 Terminal switching 145 161.055 Police 146 161.475 Police 147 452.900 Car Dept. for radio frequencies used on the Railways can be found on the Offcom website. 4. [1] Over the next four years, control was transferred to Inverness and the Wick and Thurso line was included in the scheme. Zip Scanners *Free shipping > $99, lower 48, Emergency personnel (firefighters, police, EMS, etc. The GSM-R specifications are fairly stable; the latest mandatory upgrade was in 2006. WebDuring the course of their work, the UIC radio frequency group concluded that efforts would have to be undertaken to negotiate, with the European Frequency Committee (CEPT), for the allocation to the railways of a specific frequency band adjacent to the E-GSM band. The main task of this expert group is to maintain the SRS, to define technical solutions for functional requirements, to liaise with ETSI, the standardization Body for GSM related to railway requirements, to create the necessary change requests based on implementation reports, to liaise with the TIG (Technical Industry Group) and to define technical improvement necessary for new SRS releases. The Central Division has been abolished, with lines in Kentucky divided between the Lake and Illinois Divisions. As of spring 2016[update], the only areas of UK Network Rail still currently employing VHF train radio communications are on sections of the Highland and Far North lines in Scotland, where the Radio Electronic Token Block system is utilised, using modified Ofcom frequencies around 180MHz, having been de-scoped from the National GSM-R plan, due to practical difficulties involved in deploying the GSM-R system in this region. About 30-35 miles. Estler's Mortgage Lifter tomato is one of the most popular heirloom varieties that is perfect for home gardeners. The manual issue of the tokens continued as before. It is a development of the physical token system for controlling traffic on single lines. GSM-R is one part of ERTMS (European Rail Traffic Management System) which is composed of: GSM-R is standardized to be implemented in either the E-GSM (900MHz-GSM) or DCS 1800 (1,800MHz-GSM) frequency band which are both being used around the world. im just curious and wanted to know if they could be tuned into or not for my use only nothing more. Encrypted Frequencies. In that case, theyre probably interested in listening to the same railroad scanner as you. State rail operators acquired six mostly non-grouped parcels which cover 2 15MHz of spectrum to deploy GSM-R.[16], State rail operators re-licensed 2 x 10MHz of 1800MHz spectrum in Adelaide, Brisbane, Melbourne, Perth, and Sydney for Rail Safety and Control Communications. Information is also given on the work of the different permanent and Ad Hoc-groups and the presentation of actual Change requests together with their status. Potentially up to 60 miles with a home/vehicle antenna. 282,914. It also shows the internationally agreed spectrum allocations of the International Telecommunication Union (ITU). 807660 for example defines a MSISDN of a mobile subscriber. You are using an out of date browser. Yes, even the graffiti that reveals your childlike wonder at railroad crossings. If you listen outside, near the rail yard, it can get very loud, so over-ear headphones are highly recommended. options for an EIRENE-compliant(), 23 November 2022 FVR also utilizes FRS radios for switching coordination. The FG works with OG and the GSM-R industry Group (IG) to find the right solutions and requirements. If you have a specific query you should see other ways to contact us. Radios used for things like shunting are also likely to be on private scrambled frequencies. As an example in the diagram below, the narrow segment of 5378 5382kHz is only wide enough for one SSB signal which should be no higher than 5379kHz for the signal to remain within the allocation: Similarly, with digital modes on 5357kHz, any transmission greater than 1000Hz (1kHz) on the waterfall will be above 5358.0kHz and therefore out of band, see diagram below: 5. WebThe United Kingdom Frequency Allocation Table (UKFAT) details the uses (referred to as 'allocations') to which various frequency bands are put to the UK. In addition to the declaration of willingness set out in the MoU, the UIC also instigated an Agreement of Implementation (AoI), where the signing railways committed themselves to start their implementation of the national GSM-R system in 2003 at the latest. Through its working groups, the ERTMS/GSM-R project brings together existing and future implementers of GSM-R, assisting the former in realising their objectives and keeping the latter - and the railway industry in general - informed of developments. The call is established with an emergency level priority whose level is the highest possible priority 0. When it is necessary to work on specific subjects, in a more detailed way, the OG forms Ad Hoc Groups with experts from the GSM-R suppliers and from the railways. If the signaller is in a position to do so, they will issue the electronic token applicable to the section ahead. These groups prepare the ground for a deeper analysis of specific subjects, which cannot be developed, in detail, in the permanent working groups. It is a development of the physical token system for controlling traffic on single lines. PCA =X]`:a +#P1L?lPPK-:4 3pi^ 9fbWB3KLFwLj/#HIHckL,QbL7Q EIRENE also defines non-mandatory specifications, that are called "Interim version", which defines extra features that are likely to become mandatory in the next TSIs. This is where headphones and a two-way splitter come into play. The current versions are 21 December 2015 versions FRS 8.0.0 and SRS 16.0.0[22] Interactive UK Frequency Allocation Table (for an optimal experience, please view on desktop), UK Frequency Allocation Table 2017 (PDF, 2.2 MB). Handheld scanners are portable and can be carried around like a walkie-talkie. Although previously members of the CEPT, Belarus and Russia had their memberships suspended, indefinitely, with effect from 00:00 (CET), 18 March 2022. Though they've alll moved to ever more secure systems- and obviously the railways are shifting to GSM-R now. With implementation of GSM-R now well underway on Europes railways, and worldwide interest beyond its frontiers, the ERTMS/GSM-R project of the UIC has the task of maintaining the GSM-R specifications, developed under the EIRENE project, managing the UIC roll-out plan for the system and handling issues and problems that arise as the work is progressing. 2023. Looking to listen to railroad communication, but not sure where to start? You can hear conductors, trainmen, engineers, firefighters, passenger train crew members, Chief of On-Board Services, stewards, dining car attendants, kitchen staff, attendants and more. 9842 0 obj <>stream Yes. Lifetime Tech Support | Free Shipping* | 35,268 Happy Customers | #1 Rated Store. It also shows the internationally agreed spectrum allocations of the International Telecommunication Union (ITU). [11], GSM-R occupies a 4MHz wide range of the E-GSM band (900MHz-GSM). Web1.1 The Radio Equipment Regulations 2017 (SI 2017/1206) set out the obligations on economic operators for placing radio equipment on the market. A handful of states have restrictions regarding using a scanner in your vehicle, so here is a detailed explanation of scanner laws in the US. In parallel, the advantages and disadvantages of the two potential systems ( GSM or TETRA) were discussed. The segments of the IARU band plan in red below cannot be used in the UK. There are a few exceptions and oddities around the US and for a detailed breakdown visit RadioReference. In areas where the European Train Control System (ETCS) Level 2 or 3 is used, the train maintains a circuit switched digital modem connection to the train control center at all times. Encrypted Frequencies. It also doe, Gardening Tips for Growing Tomatoes | Everything You Need to Know, Gardening is an incredibly rewarding activity, and tomatoes are one of the most popular crops to grow. The proposed weak signal segment for <20Hz narrow band modes from 5366.0 5366.5kHz also falls within the UK 5MHz frequency schedule. The segments of the IARU band plan in red below cannot be used in the UK. There are 4 main things to consider when buying a railroad scanner: Over 99% of all railroad communication can be picked up with an analog scanner. It was opened on 10 June 2007. A train stop loop is provided at each stop board, and is normally activated (so that any train attempting to pass it will be immediately brought to a halt). Bank 8 - UHF Railroad Frequencies. On arrival at a "token exchange point", the driver reports their position to the signaller by radio and requests the "token" for the next section of line ahead. We can still program if you did not purchase from us or already have your scanner. Each TDMA frame is divided in 8 time slots, named logical channels (577s long, each time-slot), carrying 148 bits of information. In 1997, the UIC prepared a Memorandum of Understanding (MoU), committing the railways, who signed this MoU, to no longer investing in analogue radio systems, and only investing in the implementation of GSM-R. Ensure that the transmitted spectrum is completely within theallocatedfrequencies. 9818 0 obj <> endobj Frequencies. Programming each scanner is unique and we discuss how to program each scanner on its product page. Like other GSM devices, GSM-R equipment can transmit data and voice. This UK Interface Requirement contains the requirements for the licensing and use of Short Range Devices in the specified frequency bands. wide) and the frequency remained the same. WebThe USB frequencies 5354kHz and 5363kHz shown in the table above are within the all modes segment of the WRC-15 band. Talkgroups. Establishes a call from a mobile station to (usually) a fixed subscriber/dispatcher performing a function in the area where the mobile station is located. Encrypted Frequencies. Operators Group (OG) The most comprehensive and up to date UK radio scanner frequency database covering WTR, PMR, Airband, Airports, Air Control, Mil Airband / Airfields, Ham and more. 7 May 2012. Communications with Military Cadet Stations. WebThe USB frequencies 5354kHz and 5363kHz shown in the table above are within the all modes segment of the WRC-15 band. [24], The Shunting Emergency Call is a dedicated group call with the number 599. The simplest, cheapest and quickest way of restoring the links between the instruments was found to be by radio: each machine was fitted with an external controller containing a unique microprocessor code so that the effect of a dedicated link to the machine at the other end of its section was maintained. Online The most comprehensive and up to date UK radio scanner frequency database covering WTR, PMR, Airband, Airports, Air Control, Mil Airband / Airfields, Ham and more. [8]), GSM-R uses a specific frequency band, which can be referred to as the "standard" GSM-R band:[9], In Germany this band was extended with additional channels in the 873876MHz and 918921MHz range. The system is slightly similar to North American Direct Traffic Control, which unlike RETB does not have a cab display unit. This is popular with passenger train listeners. The standard is the result of over ten years of collaboration between the various European railway companies, with the goal of achieving interoperability using a single communication platform. The equipment was installed at about 100 locations. Call features are: The following definitions are a part of the System Requirements Specification (SRS) as defined by the EIRENE standard. The request for frequencies resulted in a recommendation from CEPT, to add 4 MHz to the overall GSM-band and to allocate it for railway use only. In the Netherlands, there is coverage on all the lines and the old system called Telerail was abandoned in favour of GSM-R in 2006. As of 2008, in Italy more than 9,000 kilometres (5,600mi) of railway lines are served by the GSM-R infrastructure: this number includes both ordinary and high speed lines, as well as more than 1,000km (620mi) of tunnels. The road channel uses the repeater output only, carrier squelch. Paul G4MWO produces a regular newsletter on 5MHz activity and operation around the world, which also gives useful information about the current status of 5MHz. For a more up to date Scanning Directory for the UK I recommend The 2011 UK Scanning Directory by KimmyJS19 It's the best out there and updated every day, Nice list Andrew, been getting G4S on 456. in my area instead of the 447.8750 simplex. 5-7 oz Orange, mid season). Encrypted Talkgroups. Repeater input uses043 DPL TX. Therefore it was necessary to identify and add to the standard GSM the Advanced Speech Call Items (ASCI) features. 3. This section provides information on the system and its implementation, including the latest versions of the EIRENE specifications and the full range of specifications. This was a very important consideration as one of the main objectives was, to use a system already proven with off-the-shelf products available, with the minimum of modifications. GSM-R: the railways mobile communication system, Running the railway in the Southern region, Improving our railway in the Southern region, How we keep you updated when theres a delay, Earthworks: cutting slopes and embankments, Seasonal track treatment and weather support fleet, Drones or Unmanned Aircraft Systems (UAS), Responding to weather impacts on the railway, Cambridgeshire level crossing Reduction Order, Essex, Havering and Hertfordshire level crossing reduction order, Market Harborough Line Speed Improvement project, Midland Main Line Upgrade Plan Bedford to Kettering, Brixton to Beckenham Junction (Penge Tunnel), Faversham to Dover Priory improvement project, Upgrading the Brighton Main Line and its branch lines, Unblocking the Croydon bottleneck The Croydon Area Remodelling Scheme, Step Free Access for East Grinstead station, London Victoria track and signalling upgrades, Tulse Hill, Peckham Rye and Crystal Palace resignalling, Lift, Escalator and Travellator Renewal Project, Feltham and Wokingham re-signalling programme, Farnborough North and Hatches Level Crossing Upgrade, Salisbury to Yeovil Junction improvements, Parsons Tunnel to Teignmouth Resilience Project, Parsons Tunnel to Teignmouth project history, Protecting the track between Dawlish and Holcombe, Bristol to Taunton bridge and track renewals, Old Oak Common lineside logistics compound, Shaws and Crabtree level crossing proposals, Digital Railway long-term deployment plan, Prevention through engineering and design (PtED). [2] However, LTE is generally considered to be a "4G" protocol, and the UIC's Future Railway Mobile Communication System (FRMCS) program[3] is considering moving to something "5G"-based (specifically 3GPP R15/16),[4] thus skipping two technological generations. AAR 107-196 Channels listed are an addition to the AAR band plan when narrowbanding took effect. VHF/UHF UK General Frequencies Popular usage by various interesting users throughout The UK VHF 164.0500 164.0625 169.0125 169.0625 169.0875 169.3125 173.0500 173.0625 173.0875 Nov 21, 2007 #2 UHF 449.3125 449.4000 449.4750 461.2875 461.3750 461.4500 462.1000 JohnUK 323 Advanced Member Apr 09, 2009 #3 UHF UKG If the modem connection is lost, the train will automatically stop. The specifications were finalized in 2000, based on the European Union-funded MORANE (Mobile Radio for Railways Networks in Europe) project. It's a simplex. The G4S I got a hit on over a year ago, but no speech. Web15,000km + of railway lines covered 2,500 GSM-R telecoms masts 8,574 installed cab radios 100% coverage across the GSM-R radio network 21,200 drivers and signallers trained 860 signaller terminals 2 switching centres BBRC viewer 49 MB More information GSM-R: for drivers and signallers GSM-R: future improvements Together we can end Bank 8 - UHF Railroad Frequencies. Simultaneously, the driver must operate a button on an apparatus in the cab to receive the token. Web15,000km + of railway lines covered 2,500 GSM-R telecoms masts 8,574 installed cab radios 100% coverage across the GSM-R radio network 21,200 drivers and signallers trained 860 signaller terminals 2 switching centres BBRC viewer 49 MB More information GSM-R: for drivers and signallers GSM-R: future improvements Together we can end Choosing the Right Variety Take care not to transmit outside the UK segments even if amateur signals can be heard as they may be coming from other countries with different allocations. [5][6], GSM-R is built on GSM technology, and benefits from the economies of scale of its GSM technology heritage, aiming at being a cost efficient digital replacement for existing incompatible in-track cable and analogue railway radio networks. [10] Being used formerly for regional trunked radio systems the full usage of the new frequencies is aimed for 2015. Yard channel is monitored at P&L Princeton Yard. Close cooperation is maintained with ETSI - through ETSI Technical Committee Rail Telecommunications- and with the GSM-R Industry. But to get the most out of your tomato plants, its important to understand the basics of planting and caring for them. This allows RETB to continue to operate on Band III Sub Band 1. With 2021 in full swing, many gardeners are looking for new varieties of plants to grow. English and Turkish, 25 October 2022 This experiment is now concluded and we would like to thank everyone who participated. The EIRENE version numbering structure is as follows: Following this, EIRENE 8.0.0 & 16.0.0 are aligned with ERA B1 r0. Channels 001-006 are used in Canada and in the US by some railroad trucking operations. Paducah District - Central City, KY to Paducah, KY - Vehicle police scanners can be installed in the dashboard of a vehicle like a car radio. This frequency band was intended to cover the current railway needs as well as the future railway needs. The OG is also responsible for creating a new version of the SRS and upgrading of former MORANE documents. Indication of the state of the TPWS is provided by a blue light mounted below the stop board. The Ukrainian Tribute Growout is a great opportunity for tomato lovers to get their hands on some unique and delicious varieties. The simplicity of the lineside infrastructure in RETB areas was reduced by the installation of the Train Protection & Warning System. Railroad dispatchers are popular because you can listen to communication with all trains incoming and outgoing. 2)", "GSM-R-radioer i brug p danske jernbaner", "Digirata-selvitysprojektin vlijulkaisu 2", "The what, why and how of the GSM-R System", https://en.wikipedia.org/w/index.php?title=GSM-R&oldid=1141701882, Rail transport mobile telecommunications standards, Short description is different from Wikidata, Articles needing additional references from January 2014, All articles needing additional references, Wikipedia articles in need of updating from January 2014, All Wikipedia articles in need of updating, Wikipedia articles in need of updating from April 2018, Articles containing potentially dated statements from 2016, All articles containing potentially dated statements, Creative Commons Attribution-ShareAlike License 3.0, Reserved for breakout codes and national use, Reserved for access to public or to other GSM-R networks, NSS/BSS: Siemens together with SBB Telecom, Users were switched to the existing TETRA-based national, Uplink: 876880MHz used for data transmission, Downlink: 921925MHz used for data reception, Functional Requirement Specification (FRS): the definition of higher lever functional requirements, System Requirement Specification (SRS): the definition of the technical solutions supporting the functional requirements, December 2000: FRS 5/SRS 13, first version to be widely installed, June 2010: FRS7.1/SRS 15.1, current Interim version; the main added features over TSI are shunting radio and ETCS data only radio, transmission of Long Line Public Address (LLPA) announcements to remote stations down the line, control and protection (Automatic Train Control/, communication between train driver and regulation center, Priority control of all the different calls (PtP, VGCS, VBSm, REC and SEC calls), A and B: Highest priority levels (not used by GSM-R networks), 0: Highest priority levels for ASCI and normal calls (mainly used for REC calls), 4: Lowest priority level (default priority, assigned to Point-to-Point calls).

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