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Presentation Title Kontron Communications Technik der Netze – Seminar Seite 1 Die Technik der Netze Seminar Teil 9: Baukasten.

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Presentation on theme: "Presentation Title Kontron Communications Technik der Netze – Seminar Seite 1 Die Technik der Netze Seminar Teil 9: Baukasten."— Presentation transcript:

1 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 1 Die Technik der Netze Seminar Teil 9: Baukasten (2)

2 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 2 Seminarprogramm (1)Einführung – Wir bauen ein Netz (2)Übersicht über TK-Netze (3)Mobilfunk – Was steckt hinter meinem Händi (4)Internet – Das Netz der Netze (5)WiMAX – auch ein mobiles Netz (6)Geht das auch etwas allgemeiner, oder müssen wir jede Implementierung kennen? – Netzarchitekuren (7)Sicherheit im Netz – Verfügbarkeit, Integrität, Vertraulichkeit (8)Kontron - Baukasten Teil 1 Beispiel: VoIP Call Server; Media Server: Netzdesign, Systemdesign; ATCA Baukasten; TCA Baukasten; (9)Kontron - Baukasten Teil 2 Anwendungen; Anwendungsprofile; Musterkonfigurationen; Validierungstools; System Validation Kits für ATCA und TCA (10)Die Zukunft der Netze

3 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 3 Ein Blick zurück Netzdesign und Systemdesign für Call Server und Media Server

4 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 4 Gymnastik: Fast-Food Restaurant Selbstbedienung & Kasse Restaurant mit Platz für 200 Gäste Mittlere Aufenthaltsdauer pro Gast: 15 Minuten Frage: Wie viele Gäste pro Stunde (bzw. pro Minute) muss die Kasse bedienen können? Eingang Ausgang

5 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 5 Session Control and Media Processing IP Network (Carrier) PSTN Call Server/ Gateway Controller Media Server PLMN Trunking GW Trunking GW/ Signalling Gateway Call Server control call sessions (SIP/H.323 call control) control Media Server & Gateways Media Server announcements IVR conferences voice mail customised tunes streaming media trunking gateways Life TV/ local TV Video/Audio On demand

6 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 6 Controller Model Input bufferOutput buffer Processor Cache Physical memory (volatile) Disks (persistent) Data: Data base, File system, OS specific Load, Store, Paging control messages, traffic control messages, traffic 30 Mbps 13 Gbps 30 Mbps 13 Gbps 500 MB 160 GB (1600 GB) 1 Mio Subscribers 1000 tps (80% load) 100 s per transaction 500 MB (160 GB) Call Processor (e.g. SIP Server): transaction profile (e.g. 30 kbit SIP messages per call transaction) Media Processor (e.g. Streaming Server/Proxy): traffic profile (e.g. 128 kbit/s of media streams of 100 seconds per transaction)

7 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 7 Anwendungen Musteranwendungen, Netzdesign

8 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 8 Marktsegmente für VoIP and Medien Wireline Enterprise IP Centrex VoIP Trunking Gateways IPTV NGN Media Servers Wireless Wireless Enterprise WiMAX 2G/3G Media Servers Fixed-Mobile Convergence Media Server Capabilities Conferences Announcements Voice Mail and Voice Recording Media Streaming IVR/Voice Portals/VXML ACD and Contact Server Unified Messaging Transcoding DTMF/FAX processing SIP Control, MGCP/Megaco/H.323 IVR: Interactive Voice Response (Ansagemenüs mit Ziffertasten) VXML: Voice XML (Sprachführung und Spracherkennung per Web-Seite)

9 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 9 Enterprise and Wireless Enterprise PBX PSTN IP Network TA Media Server IP phones voice mail unified messaging conferences call center transcoder bypass PSTN to connect to other PBXs

10 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 10 IP Centrex PBX IP Network (Centrex Operator) TA Media Server trunking gateway SIP control announcements conferences voice mail unified messaging transcoder SME SOHO SME PSTN Call Server Media Server Media GW IP Network

11 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 11 NGN and VoIP Trunking IP Network (Carrier) PSTN Call Server Media Server PLMN Trunking GW Media Server trunking gateway SIP control conferences voice mail announcements streaming media Trunking Gateway SIP control H.323 control MGCP/Megaco transcoding Siehe Teil 8: Call Server & Media Server Siehe Teil 8: Call Server & Media Server

12 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 12 WiMAX WiMAX RAN (IP Network) BS Access Controller Core Network (IP Network) Internet PSTN/ PLMN Trunking GW AAA Call Server Content Server Media Server

13 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 13 2G/3G Media Servers 2G RAN BTS BSC 3G RAN Node B RNC Core Network (IP Network) Call Server/ MSC Server Media Server PSTN/ PLMN Trunking GW Internet HLR SGSN GGSN Media Server SIP/Megaco ctrl. announcements IVR conferences transcoding

14 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 14 IP-TV RAN (3G/WiMAX) BS BSC/AC Wireline Access Network (DSL/CaTV) DSLAM/NAS AAA triple play Life TV/ local TV On demand Media Controller Media Server Media Server Media Streaming interactive voice support conferences IVR/VXML

15 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 15 Fixed-Mobile Convergence RAN (2G/3G) Wireline Access Network DSLAM/NAS AAA/HSS IMS S-CSCF Media Server BTS/Node B BSC/RNC/ SGSN Visited Network Call Server/ Application Server/ MGCF IMS P-CSCF Media Server SIP/Megaco ctrl. announcements IVR conferences transcoding Lawful interception

16 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 16 Systemdesign Anwendungsprofile, Systemarchitektur, Musterkonfigurationen mit ATCA und TCA

17 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 17 How to design ATCA systems? Each network element can be profiled in terms of Subscribers Transactions Traffic Interfaces Sample configurations correspond to the application profile Same building blocks for the same functions Same patterns for the same profiles: Bundles Sub-systems Pre-integrated systems Chose system components from building blocks Application Profiles Building Blocks

18 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 18 Application Profiles - Summary Call Servers/Gateway Controllers/IMS-CSCF HLR/HSS Media Gateway/Trunking GW Media Server Signalling Gateway Radio Network Controller (RNC) Line Termination (DSLAM) WiMAX Access Controller (WAC) Base Station (BTS, Node B) IP-PBX Media Server Military (Radar, image processing, communications) Medical Industrial

19 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 19 Dimensionierung – Einige Faustregeln Subscribers: for orientation; Transactions: according to traditional design PSTN: 10% of subscribers are simultanously active (0,1 Erlang); one transaction (call) takes about 100 seconds -> 1 mtps per subscriber PLMN: according to traffic models, the most significant transaction are location updates of typically 4 updates per busy hour -> 1 mtps per subscriber (with 1h = 4000 seconds) Traffic: Signalling traffic (control plane): tps x subscribers x message lenght Data traffic (user plane): TDM interface x subscribers; for IP networks: service dependent or design guideline (e.g. 50 kbits/s per subscriber) DSP: 60 voice ports per DSP; 8 DSPs per AMC -> 500 voice ports per AMC Data Base: subscriber profiles and associated service profiles and state information to be handled in physical memory follows number of subscribers with kBytes per subscriber

20 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 20 Sample Profiles HLR/HSS 10 Mio subscribers tps 100 Mbits/s throughput 30 GBytes of subscriber profiles & state info Media Server subscribers 50 tps ( BHCA) 13 Gbits/s of traffic Media/Trunking GW Transcoding and media processing subscribers 12 tps ( BHCA) 800 Mbits/s of traffic Signaling Gateway 1 Mio subscribers 1000 tps (4 Mio BHCA), 30 Mbits/s control traffic (IP) 6 Mbits/s control traffic (SS7) Radio Network Controller 5000 channels 50 tps ( BHCA) 3 Mbits/s control traffic 320 Mbits/s user traffic

21 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 21 Sample Profiles Each System is either Transaction Profile or Traffic Profile Max Traffic for Transaction Profiles: 100 Mbits/s Traffic for traffic profiles: 300 Mbits/s to 13 Gbits/s (Media Server) Data bases 1000 GBytes)

22 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 22 HLR/HSS (w/o CS7 signaling) Storage Subsystem 10 Mio subscribers tps 100 Mbits/s throughput 30 GBytes of subscriber profiles & state info (in DB Server RAM and on HDD) N+1 Redundanz Processor Subsystem Redundant DB Server Network Switch Processor Fabric (GbE) Storage Fabric (GbE) N …

23 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 23 Redundante Datenbanken F1 F2 F3 F4 F1 (F4) F2 (F1) F3 (F2) F4 (F3) Data Base Data Base Nodes F1 (F4) F2 (F1) F3 (F2) F4 (F3) Data Base Servers N1N2N3N4 Verteilte Datenbank Fragmente definieren (F1, F2, …) Fragmente den Data Base Nodes mit Spiegelfragmenten zuordnen (werden im Arbeitsspeicher synchronisiert) DB Nodes (logische) auf Data Base Server (physikalisch) verteilen M+1 Redundanz for DB Servers Server 1Server 2 N1N2 N3 N4 Fragments Allocate Nodes to Servers Siehe Teil 7: Redundanz

24 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 24 Transaction profiles – HSS HLR/HSS (ohne SS7 Signalisierung) Storage & Processor Subsystems Space for main controller (PrAMC & HDD)

25 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 25 HLR/HSS (w/o CS7 signaling) MCH Storage Subsystem MCH CPU 10 Mio subscribers tps 100 Mbits/s throughput 30 GBytes of subscriber profiles & state info (in DB Server RAM and on HDD) CPU CPU Processor Subsystem CPU

26 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 26 HLR/HSS - TCA Profile Implications on fabric and MCH 1 GbE as basic fabric is sufficient (max. 100 Mbps throughput) Dual star to 12 slots for each MCH (as in TCA spec) 1GbE uplink on each MCH to interconnect each shelf 1 GbE uplink for Network interface on tier 1 MCH No need for PCIe or other fabric on MCH Special backplane design for storage subsystem Point-to-point connections on backplane for SAS/SATA disks in redundant storage sub-system (storage and processor) Does not need to pass MCH Basic MCH is sufficient

27 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 27 Media Server – N+1 Redundancy subscribers (processing ports) 50 tps ( BHCA) 13 Gbits/s of traffic storage capacity 1000 GB and more option: DSPs

28 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 28 Media Server sample configuration Uplinks (10GbE) ATCA configuration: 5 slot system Network I/F: 4x 10GbE on hub switches CPU power: 3 ATCA CPU boards with 2x SAS disks Spare capacity: 4 AMC slots on hub switches Options: DSP for signal processing Options: STM-1 or E1/T1 Interface AMCs for Signalling or Trunking GW

29 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 29 Media Server – N+1 Redundancy MCH CPU subscribers (processing ports) 50 tps ( BHCA) 13 Gbits/s of traffic storage capacity 1000 GB and more option: DSPs Processor Subsystem CPU Storage Subsystem

30 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 30 Media Server - TCA Profile Implications on fabric and MCH 2x 10 GbE uplink capacity for network interconnection (1x 10 GbE on each MCH of tier 1) 2x 10 GbE uplink capacity to interconnect both tiers (1x 10 GbE on each MCH tier 1 and tier 2) 1 GbE as basic fabric is NOT sufficient (total 13 Gbps throughput to be distributed to 8-10 processors) Use 2x 1GbE on AMC ports 0 and 2 from both MCH Use extra GbE fabric in dual star to 12 slots, e.g. on AMC port 8 and port 9 ports 8-11 avoid conflicts with other fabrics on AMC ports 4-11 such as PCIe No need for PCIe or other fabric on MCH Special backplane design for storage subsystem Point-to-point connections for SAS/SATA disks in redundant storage sub- system (storage and processor) Does not need to pass MCH Basic MCH plus GbE fabric for AMC ports 8-11

31 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 31 Signaling Gateway 1 Mio subscribers 1000 tps (4 Mio BHCA), 30 Mbits/s control traffic (IP) 6 Mbits/s control traffic (SS7) RAID IP Network (NGN) Switch Traffic Processor Fabric (GbE) TDM Network (SS7) I/O E1/T1 I/O E1/T1 RAID Call Processor & Main ctrl. RAID Fabric (GbE) Uplinks Call Processor Subsystem Traffic Processor Subsystem

32 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 32 Transaction Profiles – Signalling Gateway Signalling Gateway Signalling Gateway: transactions 1 Mio subscribers (controlled by Call Server/Gateway Controller) 1000 tps (4 Mio BHCA), 30 Mbits/s throughput of control traffic 6 Mbits/s of TDM control traffic (trunks with CS7)

33 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 33 Signaling Gateway MCH CPU E1 CPU Call Processor Subsystem Traffic Processor Subsystem

34 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 34 Signaling Gateway - TCA Profile Implications on fabric and MCH 1 GbE uplink capacity for network uplink (NGN) on tier 1 MCHs 1 GbE uplink on each MCH to interconnect both tiers Uplink for TDM traffic (SS7) over E1 interface AMCs Dual star to 12 slots for each MCH sufficient (AMC ports 0 and 1 as in TCA spec) No need for PCIe or other fabric on MCH (multi processor operation for traffic processors not feasible with PCIe) Special backplane design for storage subsystem Point-to-point connections for SAS/SATA disks in redundant storage sub-system (storage and processor) Does not need to pass MCH Basic MCH is sufficient

35 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 35 Radio Network Controller 5000 channels 50 tps ( BHCA) 3 Mbits/s control traffic 320 Mbits/s user traffic Option: DSPs IP Network (SGSN) Switch Traffic Processor Fabric (GbE) 12 TDM Network (2G/3G BS) I/O STM-1 I/O STM-1 Call Processor & Main ctrl. Uplinks I/O STM Fabric (GbE) Traffic Processor Subsystem Call Processor Subsystem 46 5

36 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 36 Traffic Profiles - RNC Radio Network Controller Radio Network Controller (RNC) subscribers (5000 channels) 3G base stations (Node B) 2G base stations (BTS) converted to 3G core net protocols 50 tps ( BHCA) 3 Mbits/s throughput of control traffic 320 Mbits/s throughput of user traffic

37 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 37 Radio Network Controller MCH CPU 5000 channels 50 tps ( BHCA) 3 Mbits/s control traffic 320 Mbits/s user traffic Option: DSPs STM-1 CPU Traffic Processor Subsystem Call Processor Subsystem

38 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 38 Radio Network Controller - TCA Profile Implications on fabric and MCH 1 GbE uplink capacity for network uplink (SGSN) on tier 1 MCHs 1 GbE uplink on each MCH to interconnect both tiers Uplink for TDM traffic (2G/3G BS) over STM-1 interface AMCs Dual star to 12 slots for each MCH sufficient (AMC ports 0 and 1 as in TCA spec) No need for PCIe or other fabric on MCH (multi processor operation for traffic processors not feasible with PCIe) Special backplane design for storage subsystem Point-to-point connections for SAS/SATA disks in redundant storage sub-system (storage and processor) Does not need to pass MCH Basic MCH is sufficient

39 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 39 Media Gateway/Trunking Gateway Media Processing (e.g. VoIP to TDM) subscribers 12 tps ( BHCA) 800 Mbits/s of traffic IP Network (NGN) Switch Traffic Processor Fabric (GbE) 12 TDM Network (trunks) I/O STM-1 I/O STM-1 Call Processor & Main ctrl. Uplinks I/O STM I/O STM-1 87 Media Processor (DSP) transcoding Fabric (GbE) Traffic Processor Subsystem Media Processor Subsystem Call Processor Subsystem

40 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 40 Media Gateway/Trunking Gateway Media Processing (e.g. VoIP to TDM) subscribers 12 tps ( BHCA) 800 Mbits/s of traffic Traffic Processor Subsystem Media Processor Subsystem Call Processor Subsystem

41 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 41 Traffic Profiles – Media Gateway Media Gateway/Trunking Gateway Media Gateway/Trunking GW: traffic Transcoding and media processing using DSPs: VoIP to TDM TDM to VoIP subscribers 12 tps ( BHCA) 800 Mbit/s of traffic DSP load: data streams

42 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 42 Media/Trunking Gateway - TCA Profile Implications on fabric and MCH 10 GbE uplink capacity for network uplink (NGN) on each tier 2 MCH 10 GbE uplink on each MCH to interconnect both tiers 10 GbE uplink on each tier 1 MCH to interconnect Call Processor Subsystem on upper shelf Uplink for TDM traffic (SS7) over STM-1 interface AMCs Dual star to 12 slots for each MCH sufficient (AMC ports 0 and 1 as in TCA spec); No need for PCIe or other fabric on MCH (multi processor operation for traffic processors not feasible with PCIe) Special backplane design for storage subsystem Point-to-point connections for SAS/SATA disks in redundant storage sub- system (storage and processor) Does not need to pass MCH Basic MCH is sufficient

43 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 43 Systems Validation Typische Konfigurationen vorher testen erspart Überraschungen

44 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 44 Services supporting systems design Professional Services: Training & tutorials in ATCA systems and systems design Consulting in design & engineering of ATCA/ TCA systems Pre-integrated systems to develop customer specific designs Engineering support for customer projects Systems Validation Conformance, interoperability, performance and benchmarks Pre-integrated systems Customer designed systems 3rd party systems Using of Kontron validation tools Validation of AMCs in ATCA and TCA environments Validate configurations of customer projects Set-up OS&HA environment Remote diagnosis and repair

45 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 45 Kontron R&D Lab Systems under test Lab environment for validation and tests Load & conformance

46 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 46 ATCA System Validation Kit Starthilfe für Kundenprojekte, für den internen Gebrauch und Demos

47 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 47 Media Server start-up configuration switch Internet (e.g DSL& dynamic DNS) Streaming client Streaming Clients KAVE terminal

48 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 48 Applications Start-up Configuration: 2x AT 8901 Hub with 2x AT 8020 CPU 2x SATA AMC each; Linux installed (Red Hat, CentOS) Application Demo: Quicktime Streaming Server (H.264, MPEG-4, 3GPP) or other free streaming server (t.b. defined) Systems Validation & Demo: KAVE tools installed Extensions: HA platform (Linux HA cluster, ENEA, others to validate) RAID Options: SATA RAID & SAS RAID configuration DSP AMCs for media processing on carrier board (t.b. defined) 1x E1 AMC/STM-1 + 1x AMC CPU + 2x DSP AMC for TDM/VoIP (Trunking Gateway) on carrier board 1x E1 AMC/STM-1 + 1x CPU AMC for CS7 signalling (Signalling Gateway) on hub board 1st step

49 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 49 Extension 1: HA Platform processor storage Switch (Hub) LAN System Architecture: HA Platform based on Linux OS virtualisation (DRDB, Keep Alive), copy of Kontron Web-Server with support of Kontron IT to demonstrate Switch-over Fail-over ENEA HA platform & GUI Others to validate synch state

50 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 50 Extension 2: RAID Options LAN RAID synch state Option 1: SATA RAID 2 disks per CPU LAN RAID synch state Option 2: SAS RAID 2 disks partitions per CPU (2 ports on SAS disks)

51 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 51 Extension 3: Legacy Interfaces System Configuration: 2x AM 4002 CPU 2x Interphase E1/T1 AMC (iSpan 3639) and 2x Interphase STM-1/OC3 AMC (iSpan 3632) as option Linux & higher layer protocols on CPU AMC Applications: Trunking Gateway: VoIP to TDM and vice versa incl. Voice processing on DSPs Signalling Gateway: CS7 signalling

52 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 52 Extension 4: DSP System Configuration: 1x AT 8400 carrier board 1x AM4002 CPU 3x Surf Rider DSP CPU Linux installed Application 1: Trunking Gateway VoIP to TDM conversion (DSP) DSP & CPU: RTP & call ctrl. E1/STM1 & CPU: Lower protocol layers & higher protocol layers To be validated with sample applications provided by partners (ready to run ) Application 2: Media Transcoding (t.b.d.)

53 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 53 TCA System Validation Kit Gleicher Fahrplan wie ATCA, jedoch andere technische Basis

54 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 54 IP-PBX start-up configuration CPU MCH Spare CPU MCH WLAN switch Internet e.g. SipGate, PBXnet 2 SIP hardphones public SIP phones 2 SIP WiFi phones in Kontron WLAN

55 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 55 Extension 1: HA Platform processor storage Switch (MCH) LAN System Architecture: HA Platform included based on OS virtualisation for Linux Option: ENEA Option: other implementations for the sake of comparison synch state CPU MCH Spare CPU MCH

56 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 56 Extension 2: RAID Versions CPU MCH Spare CPU MCH LAN RAID synch state Version 1: SATA RAID 2 disks per CPU LAN RAID synch state Version 2: SAS RAID 2 disks partitions per CPU (2 ports on SAS disks) MCH assumed to support meshed configuration to CPUs

57 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 57 Extension 3: Interfaces I/O 8x E1 System Architecture: Line cards for POTS, ISDN phones PSTN PRI Extra I/O ports for mir SIP connectivity and IP based signalling protocols CPU MCH CPU MCH

58 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 58 Das nächste Mal (Teil 10) Die Zukunft der Netze Ein Blick zurück Öffentliche und private TK-Netze Anwendungen in Netzen Organisation von Netzen Mikroprozessoren – in Zukunft alle vernetzt Anwendungen aus der Industrie, Transport Medizintechnik

59 Presentation Title Kontron Communications Technik der Netze – Seminar Seite 59 Ende Teil 9


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