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MTSO

MTSO. MSS EDZW := MTSO. Meteorological Telecommunication System Offenbach. Main Purpose. Main Tasks. R egional T elecommunication H ub in the MTN of the W orld W eather W atch of WMO

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MTSO

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  1. MTSO MSS EDZW := MTSO Meteorological Telecommunication System Offenbach

  2. Main Purpose Main Tasks • Regional Telecommunication Hub in the MTN of the World Weather Watch of WMO • Continuous reception, distribution and transmission of meteorological data (alphanumerical and Binary) in bulletins or files via RMDCN (GTS), AFTN/CIDIN (ICAO) Internet, leased lines, HF Radio Broadcast, Satellite DWDSAT etc. • Supply of the German National Computer Centre and National Regional Offices with meteorological data

  3. History 1967 Tender for migration to automatic Telecommunication of DWD March 1973 commissioning of the AEG TR86-System [2 computers, Assembler-Application] November 1977 System upgrade [4 central and 5 process computers] March 1982 additional DEC PDP 11/44-System (GEI-MSS) [implementation of HDLC-LapB procedures] March 1990 Migration to a VAX-Cluster (WMO-MSS) [3 hosts, 13 front-ends; VMS Operating System; implementation of X.25 procedures] December 1991 deactivation of the TR86-System December 1992 deactivation of the PDP 11/44-System April 1996 transition to MSS II and AFD on Stratus Continuum 620 [FTX OS =System V Rel. 4 UNIX derivative; implementation of TCP/IP protocols (ftp/sockets)] November 2002 MSS on a high availability-Cluster Primepower 400 with SUN-Solaris 8 (Fujitsu Siemens Computer)

  4. Switching Software (MSS/AFD) Main Features of the Message Switching Software •  Full compliance to WMO Standards and Recommendations •  High Performance •  Graphical User Interface •  Online Context sensitive help •  Online Configuration to a high extent •  Interfaces to any standard communication device • Easy extension due to modular design • Send / retrieve any type of file, bulletin and report •  Multi processes for file distributiong to a single host •  File distribution with priority •  Append-to-File function Version 2.5-11

  5. Main Telecommunication Network Main Telecommunication Network (MTN)

  6. Regional Meteorological Telecommunication Network International andRegional Meteorological Telecommunications Network

  7. National Meteorological Telecommunication Network National Meteorological Telecommunications Network

  8. MSS Connectivity MSS Connections Approximately 120 virtual channels configured Apart from international connections within the WMO networks several connections to International Organisations, DWD Regional Offices in Germany, Universities, authorities and other customers. MTN connections - Beijing (RA II), Jeddah (RA II), Nairobi (RA I), Prague and Toulouse RMTN connections - Bracknell, Norrköping, Rome, Vienna, Warszawa Area of Responsibility - Bet Dagan, Zurich Bilateral connections - Amman, Ankara, Athens, DeBilt, Kopenhagen, Madrid, Abu Dhabi, Doha, Teheran, Ljubljana Int. Organisations - ICAO, ECMWF, ESOC, EUMETSAT Dissemination services - HF Radio Broadcast (F1B and F1C), DWDSAT

  9. Protocols MSS connections continued Protocol types used with the connected lines: Asynchronous incl. Modem-connections, HF Broadcast (3 international, 2 national, 1 DWD internal) CIDIN Gateway to the ICAO-Network AFTN e-mail with attachment, also data collection FTP (35 international, 53 national) TCP/IP-Sockets incl. special ACK procedure (level4) (20 international, 4 national) X.25 SVC, PVC (3 international, 3 national) some extended protocols [user defined] and Test connections

  10. OUT/IN % Bw CCCC/ORG ISO City 16 1,28 OMAE UAE Abu Dhabi 16/ 8 1,28 OJAM JOR Amman 32 2,56 LTAA TUR Ankara 32 2,56 LGAT GRE Athen 32/16 2,56 LYBM FYU Beograd 64 5,13 EUMETSAT DEU Darmstadt 48/64 3,84 EGRR GBR Exeter 16/ 8 1,28 OEJD SAU Jeddah 16 1,28 EKCH DNK Kobenhavn 16 1,28 LEMM ESP Madrid 64 5,13 ESWI SWE Norrköping 48 3,84 BABJ CHN Beijing 32 2,56 OKPR CZE Praha 512 41,03 ECMWF GBR Reading 32 2,56 LIIB ITA Rome 64 5,13 LFPW FRA Toulouse 16/ 8 1,28 SOWR POL Warszawa 64 5,13 LOWM AUT Vienna 128/64 10,26 LSSW CHE Zurich 1248 100 % TOTAL OUT/IN kbps % Bw CCCC/ORG ISO City 512 41.0 ECMWF GBR Reading 128/64 10.3 LSSW CHE Zurich 64 5.1 LFPW FRA Toulouse 64 5.1 EUMETSAT DEU Darmstadt 64 5.1 LOWM AUT Vienna 64 5.1 ESWI SWE Norrköping 48/64 3.8 EGRR GBR Exeter 48 3.8 BABJ CHN Beijing 32 2.6 OKPR CZE Praha 32 2.6 LIIB ITA Rome 32 2.6 LTAA TUR Ankara 32 2.6 LGAT GRE Athens 32/16 2.6 LYBM FYU Beograd 16/ 8 1.3 OEJD SAU Jeddah 16 1.3 EKCH DNK Kobenhavn 16 1.3 LEMM ESP Madrid 16 1.3 OMAE UAE Abu Dhabi 16/ 8 1.3 OJAM JOR Amman 16/ 8 1.3 SOWR POL Warszawa 1248 kbps 100 % TOTAL Bandwidth / kbps and percentage of lines from / to RTH Offenbach

  11. MSS Database MSS Database 44.000 routeing entries with control information Storage time - report extraction - protection - DTG-checks - double check by checksum - transmission information etc. (230 ignore, 400 compiled, 450 sub, 33920 input messages) 1.100 scheduler entries 240.400 report database entries in 65 different definition records 12.500 entries in Station Catalogue

  12. MSS Throughput: current / expected Data Traffic of EDZW MSS per day current number of messages Input: 570.000 (6 GB) Output: 4,3 Million (16 GB) IN: 6 GB number of files Input: 74.000 OUT: 16 GB Output: 557.000 expected within 5 years number of messages input: 1 Million output: 7 Million IN: 70 GB number of files input: 1 Million OUT: 200 GB output: 5 Million

  13. System Availability 99.95 % Max. outage time / monthly sum 15‘ / 66‘ Maintenance Response Time 4 hrs Time delay bulletins / files < 1 sec Time delay with bulletin compilation < 3 min Storage capacity reports / bulletins 210k / 42k Max. length of bulletin, ASCII 15 kB, WMO-part. 250 kB Max. length of bulletin, binary 2600 kB, WMO-part. 500 kB Max.Traffic per 5 minutes IN/OUT 70 MB / 82 MB Avrg.Traffic messages p.s. IN/OUT 3 / 22 System price 350 kEuro Maintenance , Modification 60 kEuro/year RTH / other connections 500 kEuro/year MSS: Technical / financial Characteristics Typica

  14. Current System Configuration Connection to DWD-LAN and International Partners

  15. Current System Configuration

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