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Speed Comparison

Speed Comparison. Pure Fibre. Hybrid Fibre/Copper. FTTH. Enhanced Copper. FTTx, VDSL2, ADSL2plus. ADSL. ISDN. Voice band Modem. PSTN. 4. KHz. Normal Telephone Line. IP TV Server. CORE Network (MPLS). ADSL MODEM. Existing Copper. ADSL MODEM. 1.5 to 9 Mbps. Internet.

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Speed Comparison

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  1. Speed Comparison Pure Fibre Hybrid Fibre/Copper FTTH Enhanced Copper FTTx, VDSL2, ADSL2plus ADSL ISDN Voice bandModem

  2. PSTN 4 KHz Normal Telephone Line

  3. IP TV Server CORE Network (MPLS) ADSL MODEM Existing Copper ADSL MODEM 1.5 to 9 Mbps Internet 16 to 640 kbps ADSL Connection

  4. PSTN Upstream Downstream 4 KHz How does ADSL work • ADSL exploits the unused analogue bandwidth available in the wires • ADSL works by using a frequency splitter device to split a traditional voice telephone line into two frequencies

  5. ADSL Range • In general, the maximum range for DSL without a repeater is 5.5 km • As distance decreases toward the telephone company office, the data rate increases • For larger distances, you may be able to have DSL if your phone company has extended the local loop with optical fiber cable

  6. Telephone line Voice (+ ADSL leakage) Splitter Voice + ADSL ADSL (only) ADSL Filter ADSL modem Phone

  7. ADSL - Internet only

  8. ADSL - Internet+PeoTV

  9. Only Copper to Home Separate Fiber to Node B Max 4Km Radius MSAN O/F Max 4Km Radius MSAN Separate Fiber to AGW and Copper to Home PON for AGW (MSAN), Node B and Customer Premises O/F MSAN PON OLT MSAN

  10. Access network – Passive Optical Network (PON) Upto 1Gb/s www.slt.lk 10

  11. Access Technologies FTTN (Fibre To The Neighborhood) www.slt.lk 11

  12. Access Technologies FTTH (Fibre To The Home) www.slt.lk 12

  13. WiMAX -Worldwide Interoperability for Microwave Access . www.slt.lk 13

  14. NGN

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