Pacific Telesis launched a new business.

The parent of Pacific Bell said the unregulated venture, called PacTel Spectrum Services, will manage and monitor private voice-data networks for clients using a new remote testing device and proprietary software that feeds operating data into two service centers. The “network assurance service” eliminates clients’ needs to track problems and pin down responsibility for repairs among the multiple vendors typically involved. Another 10 to 12 centers will be opened nationwide by 1990, said Carl Madsen, vice president for operations.