* Broadmargin of Fairfax plans to announce today its merger with Teldata Control, a New Jersey software firm that helps manage control of companies' telecommunications expenses. The stock deal between the two privately held companies is worth about $23 million, Broadmargin said. The combined company, known as Control Point Solutions Inc., will be based in Rutherford, N.J., and will employ 400 people. Broadmargin's chief executive Donald Lynch will serve as chairman. Teldata Control chief executive Greg Carr will be vice chairman and chief executive.

* PEC Solutions, a Fairfax government technology contractor, won a contract worth up to $93 million from the Administrative Office of the United States Courts. The contract is for one year, with four annual renewal options. Under its terms, PEC will be responsible for software design, development and integration, independent testing, quality assurance, operations and maintenance, and local area network and computer support.

* NCS Pearson, an Arlington data collection company, won a seven-year, $73.7 million contract from the Centers for Disease Control and Prevention to provide the public with information about toxic substances and diseases. The company will staff and manage the CDC's Toxic Substances and Disease Registry contact center.

* Halifax, an Alexandria technology maintenance company, won a five-year, $29 million contract from the Army to provide engineering support, installation and activation services of communications and electronic systems, training support and provisioning of equipment.

* YDI Wireless, a Falls Church broadband wireless company, changed its business name to Terabeam Wireless. The company said its corporate name and ticker symbol are not currently being changed. YDI Wireless merged with Terabeam Corp. in June 2004.

Compiled from reports by Washington Post staff writers and Government Computer News.