* MobilePro, a Bethesda wireless technology company, said it signed agreements to buy two telephone companies based in Texas but terminated its $3 million agreement to acquire the long-distance business of Herndon-based Teligent. Terms of MobilePro's agreement to buy Affordaphone and Basicphone, both based in Bridgeport, Tex., were not disclosed, but the acquisition will add more than $12 million in annual revenue, the company said. A spokesman for First Avenue Networks, which bought Teligent's assets in July and made the deal to sell the long-distance service to MobilePro, could not be reached for comment.

* Anteon International, a Fairfax information technology and systems engineering company, named Richard E. Brown, a retired Air Force lieutenant general, as group senior vice president for Air Force programs. Brown recently retired from military service after a 34-year career. His most recent assignment was as acting assistant vice chief of staff.

* Lingo, an Internet phone service operated by Primus Telecommunications Group of McLean, will begin offering customers a seven-digit dialing option for calls made within the same area code. Rather than dialing 10 to 11 digits to place a local call in many locations -- including an area code and sometimes a "1" -- Lingo customers will be able to place the same call with seven digits.

Compiled from reports by Washington Post staff writers.