1. PSTN SERVICES

2. Lecture Overview POTS Integrated Services Digital Network Business Services Service Provider services

3. THE POTS

4. The Plain Old Telephone Network Provides a dial tone to rotary and touch pad phones Type 500 phones Type 1500 phones Type 2500 phones Offers 911 services Additional features Customer Calling feature Customer Local Area Signaling Service feature Voice Mail

5. Customer Calling Features Call Forwarding Call Waiting Three way Calling Speed Dialing Added Numbers All are individual services Can be packaged by SPs

6. CLASS Features Provide customers with a powerful and convenient tool to control the incoming and out going calls Introduced by TeleCordia (Bell core) Customers interact with the switch software and direct personally which services they want Customers Originated Trace Automatic Call Back Automatic Recall Display features Calling number Blocking

7. VOICE MAIL An alternative to the answering machines Voice Answering is still available if the called party is busy Voice Messaging Fax messaging

8. THE ISDN

9. INTEGRATED SERVICES DIGITAL NETWORK Basic Rate Interface (BRI) 02 B Channels Bearer Channel 64 kbps Transmits voice and data 01 D Channels 16 kbps Call Control Messages Up 9.2 kbps voice or data Primary Rate Interface (PRI) 23 B Channels, 01 D Channel, 08 T1 lines D Channel does not transmit packet data

10. BUSINESS SERVICES

11. Virtual Private Networks Dedicated Access Lines Logical VPNs Lagecy VPNs IP Sec VPNs MPLS/BGP VPNs CENTREX SERVICES Call Handling Convenient Calling Automatic dial, speed dial, ring again, and caller ID Customer Dialing Plans Management and Security CALL CENTER SERVICES

12. SERVICEP ROVIDER’S SERVICES

13. SPS Database Services 800 services 900 services Calling Card Service Authorization Services Operator’s Service Virtual Private Networks Toll and Assistance Services Directory Assistance Services Billing Services