Patent · US Expired

Intercept information display for a private automatic branch exchange telephone system

US4529841A · kind A · utility

11Cited by

14References

10Claims

0Family size

Inventors

Jan Andersson · Waltham, US
Valter Swedberg · Alvesta, SE
Benjamin Trok · Stockholm, SE
Kurt Paulsson · Älta, SE

Key dates

Filing date	Jun 20, 1984
Grant date	Jul 16, 1985
Priority date	—
Expiry date	Jun 20, 2004

Classification

Technology area (CPC H)Electricity
CPC primaryH04Q3/625
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

The central unit of a PABX telephone system includes an associated computer unit that operates to provide visual information to an operator when calls to an extension in the system are to be intercepted. The associated computer unit includes a memory into which a subscriber to the system enters information relating to the reason his calls are to be intercepted, or the like. Any calls to the intercepted extension are routed to the operator, who is simultaneously provided with a visual display of the information stored in the computer memory.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.