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This chapter discusses various telecommunications services provided by Incumbent Local Exchange Carriers (ILECs) and Inter-exchange Carriers (IECs). Key ILEC offerings include Local Dial Tone, Centrex, Direct Inward Dialing (DID), Direct Outward Dialing (DOD), payphones, TIE line rentals, and Foreign Exchange services. Additionally, it covers Wide Area Telecommunications Service (WATS) and the advantages of toll-free numbers for businesses. IEC services like switched long-distance calling, credit card dialing, and directory assistance are also outlined, emphasizing their importance in modern business communications.
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Carriers (chapter 6) ENGR 475 – Telecommunications Harding University Fall 2006 Jonathan White
ILEC Services • Local Dial Tone • Centrex • Rented from ILEC, for businesses with over 100 lines, performs call waiting, etc… • DID – Direct Inward Dialing • Handled by the PBX/Centrex system • DOD – Direct Outward Dialing (dial 9 first) • Pay phones • Not expanding
ILEC Services • TIE line rental • Private, high speed, used to link 2 PBX’s together, charged on a flat rate • Can be very expensive • Foreign Exchange • Allows a customer to call a local number • That call then gets routed to your location • WATS • Wide Area Telecommunication Service • Created in the 1970’s to allow customers some breaks when calling long distance • 800/888/877/866 • Allows customers to call you toll free • The business pays for the call at a reduced rate
IEC Services • Inter-exchange carrier • Long distance carriers • Switched Long Distance (DDD) • Credit card dialing • Directory assistance • Other similar services such as: • WATS – volume discounted calling • 800/888 numbers • Remote call forwarding (similar to FX)