Line condition data collecting system for a telephone exchange

Details Line condition data collecting system for a telephone exchange Line condition data collecting system for a telephone exchange

1987-11-10

1988-12-20

Schreyer, Stafford D.

Telephonic communications

Centralized switching system

379297, 379269, 379381, H04M 300

Patent

active

047929693

ABSTRACT:
A line condition data collecting system for a telephone exchange includes an image memory in a central processing unit which stores line condition data to reduce the amount of time the central controller in the central processing unit waits for the line condition data. A signal receiving memory in the telephone exchange stores the line condition data and is sequentially accessed by an image memory controller autonomously from the central controller in the central processing unit. When the central controller requires line condition data, the image memory is checked and if the line condition data stored therein is valid, it is supplied to the central controller. If the line condition data in the image memory is invalid, a conventional access request is made to the signal receiving memory, but this occurs less frequently than in a conventional system.

REFERENCES:
patent: 4232199 (1980-11-01), Beatwright et al.

Affiliated with

Also associated with

Rating

Line condition data collecting system for a telephone exchange does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Line condition data collecting system for a telephone exchange, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Line condition data collecting system for a telephone exchange will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1913800