1. COMT 220 1 Network Services

2. COMT 220 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. COMT 220 3 Segments of an InterLATA Service Origination Termination Local Loop IXC Local Loop iLEC or cLEC Access

4. COMT 220 4 Some Examples CPE A Regular Long-Distance Call DedicatedSwitched CPE “WATS” Service COPOP

5. COMT 220 5 Inbound Service (“800”) CPE Low-Volume 800 Service via Business Lines DedicatedSwitched CPE Typical Call Center

6. COMT 220 6 Special Services CPE Foreign Exchange Service DedicatedSwitched CPE Private Lines

7. COMT 220 7 Switched Access Details Origination IXC POP CO Dedicated Local Loop Monthly Charge Per-Call Connection Usage-Based Access Charge Usage-Charge by IXC Database Services

8. COMT 220 8 “Special” (Dedicated) Access Origination IXC POP CO Dedicated Local Loop Monthly Charge Dedicated Connection Monthly Access Charge Usage-Charge by IXC Database Services

9. COMT 220 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. COMT 220 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. COMT 220 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. COMT 220 12 Service Charge Computation

13. COMT 220 13 V & H Coordinates V H

14. COMT 220 14 V&H Distance Computation  Athens (V1,H1) = (6011,2354)  San Francisco (V2,H2) =(8492,8719) (V 2 - V 1 ) (H 2 - H 1 ) 2 2 + 10 Dist. = Distance will come out in miles; must be rounded up

15. COMT 220 15 V&H Distance Computation  Athens (V1,H1) = (6011,2354)  San Francisco (V2,H2) =(8492,8719) (8492-6011) (8719-2354) 2 2 + 10 Dist. = Result: 2161 miles

16. COMT 220 16 Example Point of Origin at (5972, 2555) Destination of Call at (7070,2025)

17. COMT 220 17 Example Point of Origin at (5972, 2555) Destination of Call at (7070,2025) Distance = (7070 - 5972) + (2025 - 2555) 22 10 = 386 miles

18. COMT 220 18 Special Access Pricing LEC Charges Customer Premise POP CO Local Distribution Channel Local Distribution Channel Channel Mileage (2) Channel Mileage Terminations (2) Channel Mileage Terminations

19. COMT 220 19 Special Access Pricing IXC Charges Customer Premise POP CO Local Distribution Channel Channel Mileage (2) Channel Mileage Terminations Access Coordination Central Office Connection Access Coordination Central Office Connection

20. COMT 220 20 Private Line Pricing POP Customer Premise POP Customer Premise Special Access to Nearest POP Special Access to Nearest POP Special Access to Nearest POP Special Access to Nearest POP InterOffice Channel Mileage InterOffice Channel Mileage

21. COMT 220 21 Other Billing Issues  Call Duration Rounding  Sur-Charges (Operator, Calling Card)  Volume Discounts  Term Commitments