Codex Corporation was founded in July 1962 by James M. Cryer Jr. and Arthur Kohlenberg, who were director and chief scientist at a Boston area research division of Melpar.

That same month, chief primary competitor Milgo was purchased by British firm Racal, after a take-over attempt by Applied Digital Data Systems.

[8] The ISG division based in Mansfield, Massachusetts sold their "Vanguard" series Motorola routers to enterprise and retail markets.

The product's popularity led to its expansion of a managed services unit where existing router customers were given the option to have their network monitored in real time for Frame Relay outages, and hardware failures.

This service attracted customers who preferred a hands-off approach to maintaining their own networks, and not have to deal with contacting the telecommunications company for Frame Relay Circuit outages on their own.

Court Square merged the products into those of the CompuCom Systems (based in Dallas, Texas), which was also acquired at the same time.

At that time, Raymar was located in Sacramento, California, and Vanguard continued to operate in Foxboro, Massachusetts.