Class 1 Hear it!

Class 1 Telecom Definition
In the traditional public switched telephone network (PSTN) hierarchy, a regional toll center. The 10 Class 1 offices that existed prior to the breakup of the Bell System served to interconnect Class 2 offices, or sectional toll centers. At the end of 2001, seven remained in the United States, and two in Canada. See Figure C-3. See also Bell System, Class 2, and PSTN.

Browse dictionary entries near Class 1

  1. ‹ class
  2. ‹ clasper
  3. ‹ clasp knife
  4. ‹ clasp
  5. ‹ clashing
  6. ‹ clash
  7. ‹ -clase
  8. ‹ clary
  9. ‹ claros
  10. ‹ claro
  1. Class 2 ›
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  5. Class 5 ›
  6. Class A ATM traffic ›
  7. Class A cable ›
  8. Class A IP address ›
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