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Entrepreneurial Capitalism and Innovation:
A History of Computer Communications 1968-1988
By James Pelkey

Entrepreneurial Capitalism & Innovation:
History of Computer Communications
1968 -1988
By James Pelkey

This history is organized by three co-evolving market sectors and also standards making.
An overview of the schema is presented in the Introduction.

Ch. 1: Emergence
Ch. 3: Competition
Ch. 5: Market Order
Ch. 11: Adaptation

Ch. 2: Vision
Ch. 4: Arpanet
Ch. 6: Diffusion
Ch. 7: Emergence
Ch 8: Completion
Ch. 10: Market Order

Ch. 9: Creation

Ch. 12: Emergence



Chapter 11
Data Communications: WANs 1979-1986
Data Networks Become Wide Area Network


11.23     T-1 Multiplexer OEM Relationships - 1985

Exhibit 11.6identifies the leading Data Communication multiplexer firms and the OEM relationships they had made with the leading T-1 multiplexer start-ups as of 1985. These relationships indicate how difficult it was for the start-ups to develop market distribution on their own and equally how difficult it was for the existing firms to master these new technologies internally. Fortunately for those firms that had acted quickly, they had opportunities that most of the nearly 40 firms offering T-1 multiplexers in 1986 did not have. [22]  This form of market consolidation, where the firms of an emerging niche are being absorbed by the firms of an existing market, differs from what happened in LANs where the existing Data Communication firms acted too late or were disinterested, and most  minicomputer firms tried and failed to enter the market.

Exhibit 11.6
T-1 Multiplexer OEM Relationships 1985

Data Communication Firm

T-1 Multiplexer




Network Equipment Technologies

General DataComm

Cohesive Networks


Network Switching Systems

Paradyne, Milgo, Infinet

Spectrum Digital


[22]  T1mux market heats up at high and low ends. Mergers ahead?” Data Communications, June 1986, p.87