ISDN Resources

22

Long-distance
carrier

Video services

Voice service

Express mail

Information and
database service

Security
services

Utility meter reading

Catalog
shopping

Facsimile

Facsimile

Telephone

Telephone

Terminal

Multimedia
computer

PBX

Slow-motion
video

ISDN
basic
access

Local
switching
center

ISDN
primary
access

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