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COMT 220

COMT 220. Network Services. Definition of “Switched Services”. In a switched service at least some portion of the call path is set up for the duration of the call only. Everything else is a “Dedicated” or “Private” Service. Segments of an InterLATA Service. Local Loop. Origination. IXC.

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COMT 220

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  1. COMT 220 Network Services

  2. Definition of “Switched Services” In a switched service at least some portion of the call path is set up for the duration of the call only. Everything else is a “Dedicated” or “Private” Service

  3. Segments of an InterLATA Service Local Loop Origination IXC Access Local Loop Access Termination iLEC or cLEC

  4. Some Examples CPE CPE A Regular Long-Distance Call CPE CPE “WATS” Service Switched Dedicated CO POP

  5. Inbound Service (“800”) CPE CPE Low-Volume 800 Service via Business Lines CPE CPE Typical Call Center Switched Dedicated

  6. Special Services CPE CPE Foreign Exchange Service CPE CPE Private Lines Switched Dedicated

  7. Switched Access Details Dedicated Local Loop Monthly Charge Origination Database Services CO Per-Call Connection Usage-Based Access Charge IXC POP Usage-Charge by IXC

  8. “Special” (Dedicated) Access Dedicated Local Loop Monthly Charge Origination Database Services CO Dedicated Connection Monthly Access Charge IXC POP Usage-Charge by IXC

  9. Types of Services • “Dial-1” Long Distance Service • Switched Access, on-demand • Highest per-call cost. • “WATS” (Wide Area Telephone Service) • Switched or Dedicated Access • Contractual Arrangements, Volume Discounts, Minimum Commitments • Multiple services for different market segments

  10. Types of Services cont… • “800” & “888” Services • Switched or Dedicated Access • Switched Access uses standard business line • Usually toll-free to the caller • “900” Information Services • Caller pays for information via telephone bill • Note: Other “X00” codes are in use

  11. VPNs • Virtual Network Services • Switched and Dedicated Access • Multi-location service • Company-specific dialing plans • Call re-routing • Specialized announcements and intercepts • Offered through resellers to smaller businesses

  12. Service Charge Computation

  13. V & H Coordinates V H

  14. V&H Distance Computation • Athens (V1,H1) = (6011,2354) • San Francisco (V2,H2) = (8492,8719) + 2 2 (H2 - H1) (V2 - V1) Dist. = 10 Distance will come out in miles; must be rounded up

  15. V&H Distance Computation • Athens (V1,H1) = (6011,2354) • San Francisco (V2,H2) = (8492,8719) 2 2 + (8719-2354) (8492-6011) Dist. = 10 Result: 2161 miles

  16. Example Point of Origin at (5972, 2555) Destination of Call at (7070,2025)

  17. Example Point of Origin at (5972, 2555) Destination of Call at (7070,2025) 2 2 (7070 - 5972) + (2025 - 2555) Distance = 10 = 386 miles

  18. Special Access PricingLEC Charges Local Distribution Channel (2) Channel Mileage Terminations POP CO Customer Premise CO Channel Mileage

  19. Special Access PricingIXC Charges Access Coordination Central Office Connection Local Distribution Channel (2) Channel Mileage Terminations POP CO Customer Premise CO Channel Mileage

  20. Private Line Pricing Special Access to Nearest POP Special Access to Nearest POP POP POP Customer Premise Customer Premise InterOffice Channel Mileage

  21. Other Billing Issues • Call Duration Rounding • Sur-Charges (Operator, Calling Card) • Volume Discounts • Term Commitments

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