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IEX8175 RF Electronics

IEX8175 RF Electronics. Avo Ots telekommunikatsiooni õppetool, TTÜ raadio- ja sidetehnika inst. avo.ots@ttu.ee. Labs. Laboratory works are on 10th of October, 7th of November, 21st of November, 5th of December room II-407. Marika Kulmar, marikak@lr.ttu.ee. Switching Network. Telephony.

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IEX8175 RF Electronics

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  1. IEX8175 RF Electronics Avo Otstelekommunikatsiooni õppetool, TTÜ raadio- ja sidetehnika inst.avo.ots@ttu.ee

  2. Labs Laboratory works are on 10th of October, 7th of November, 21st of November, 5th of December room II-407. Marika Kulmar, marikak@lr.ttu.ee

  3. Switching Network Telephony Open Service Application Layer (JAIN, AIN, TAPI,JTAPI, XML etc.) TDM/Circuit Switch Open/Standard Interface Line Concentration Call Control Connection Control Features Open Call Control Layer (SIP, H.323, MGCP, etc.) Digital Trunk Subsystem Common Channel Signaling Complex Administration Maintenance Billing Open/Standard Interface Standards-Based Packet Infrastructure Layer (IP, ATM)

  4. ITU-T E.800 Recommendation QoS – Quality of Service

  5. ITU-T E.800 Recommendation QoS – Quality of Service

  6. Hierarchical QoS MPLS VPN Internet 10 GigE Cust n VoIP Cust 4 MPLSTunnel GigE VideoConf Cust 3 Customer # 1 VLAN VideoStream Cust 2 Data p1 Data p2 Cust 1 Internet

  7. Services (E1, E2, E3, E4, Video, etc.) Layers Payload and Path Overhead Map Payload and Path OH into VC Path Map VC and MS OH into internal signal VC and MS Overhead Multiplex Section STM-N Signal Map internal signal and RS OH into STM-N signal Regen. Section Regen. Section Light Pulse Optical Conversion Physical Photonic Regenerator Terminal Terminal Physical Layer - I.

  8. Order of transmission 1st 2nd S T M 1 270 columns Section overhead (SOH) VC Capacity 9 columns 261 columns

  9. STM-N frame 270 x N Columns 9xN Columns STM-N VC capacity 9 Rows 125 μsec Section Overhead

  10. SONET SDH Line Rate SPE Rate Optical Electrical Level (Mbit/s) (Mbit/s) Level Level STM-1 155.52 150.336 OC-3 STS-3 STM-4 622.08 601.344 OC-12 STS-12 2405.376 STM-16 2488.32 OC-48 STS-48 STM-64 9953.28 9621.504 OC-192 STS-192 STM-256 38486.016 OC-768 STS-768 39813.12 Rate Hierarchy

  11. Uni- and Bi-directional A A A-C A-C F B F B C-A C-A • Only working traffic is shown • Subnetwork (path) or multiplex section switching for protection E C E C D D Bi-directional Ring (2 fibers) Uni-directional Ring (1 fiber)

  12. Synchronization in Voice Networks Network Clock 0.000001 ppm CB M14 LT LT M14 M14 LT LT M14 CB DS0 Switch E1 E4 prop. E4 E1 E1 E4 prop. E4 E1 f1 20ppm f2 20ppm f3 20ppm f4 20ppm f5 20ppm f6 20ppm • Asynchronous transport network uses pulse stuffing and is transparent to E1 timing

  13. Synchronization Distribution Network Clock (Stratum 1) 0.000001 ppm Dedicated Timing E1 CB M14 LT LT M14 M14 LT LT M13 CB DS0 Switch E1 E4 prop. E4 E1 E1 E4 prop. E4 E1 20ppm 20ppm • Timing distribution is done using embedded E1 facility • Asynchronous transport network is transparent to E1 timing

  14. Initial SDH Deployments Network Clock (Stratum 1) 0.000001 ppm SDH NE SDH NE M14 M14 M14 LT LT M14 CB CB DS0 Switch E1 E4 STM-16 E4 E1 E1 E4 prop. E4 E1 f1 20ppm f2 20ppm f3 20ppm f4 20ppm f5 20ppm f6 20ppm • SDH used in point-point configuration • Direct replacement for async transport • SDH terminals free-run at 20ppm. Not network synchronized. No pointer adjustments so no issues with E1/E4 mapping jitter !

  15. Router Router Router Router Mesh Topology Networks • Cross-Connects are nxn switches • Interconnects S D H streams B A C D F G E

  16. Time-Slot Interchange (TSI) • Write bytes from arriving TDM stream into memory • Read bytes in permuted order into outgoing TDM stream • Max # slots = 125 msec / (2 x memory cycle time) a 1 Read slots according to connection permutation 2 b 3 … … d b c b a a d c    24 2 1 24 2 1 23 23 Write slots in order of arrival 22 23 c • Incoming TDM stream • Outgoing TDM stream 24 d Time-slot interchange

  17. Links http://www.packetizer.com/ http://en.wikipedia.org/wiki/VoIP http://en.wikipedia.org/wiki/MPLS http://en.wikipedia.org/wiki/Synchronous_Digital_Hierarchy http://en.wikipedia.org/wiki/PCM http://www.juniper.net/solutions/literature/solutionbriefs/160019.pdf

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