Example - Student Calling Home

US West

Central Office

Provo, UT

Southwest Bell

Central Office

Fairview, OK

MCI Access

Tandem

Switch

MCI

Point Of Presence

Salt Lake City

SW Bell Access

Tandem

Switch

MCI

Point Of Presence

Oklahoma City

Home

Student apartment at

Brigham Young University

MCI

Transmission

Facility

Local Exchange Carrier (LEC)

Interexchange Carrier (IXC)

Access Tandem is switch to concentrate trunk calls from CO to IXC POP.

Total local access fees charged by LEC to IXC in the United States was $23B in 1996.

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