Telecom facts:
 

International rates and revenues
Interstate minutes

Interstate costs
Telecom revenues
Telephone CPI 1

Telephone CPI 2
Area codes

Local loops

Employees

Wireless

Patents
Toll free numbers

Toll free revenue
High speed 1

High speed 2

High speed 3
SMS traffic
SMS revenue

Telecommunications Patents

Note:  1996 total reflects one-time change in law affecting patents.
Source:  U.S. Patent and Trademark Office, Patent Counts by Class by Year, January 1977 - December 2003, Telecommunications Classes 370, 375, 379 and 455, (March 2004).