Restriction of communication service accessibility among subscri

Details Restriction of communication service accessibility among subscri Restriction of communication service accessibility among subscri

1988-12-30

1991-05-21

Weldon, Ulysses

Communications: electrical

Continuously variable indicating

With meter reading

3408253, 379197, 379244, H04Q 300

Patent

active

050179179

ABSTRACT:
Subscribers (100-108) of an electronic mail system (1-2) service are divided into a plurality of subscriber communities (30-34). Subscribers in each community have common rights of access to one or more communication service--the sending and receiving of mail messages--which rights are generally different from those of subscribers in other communities. Permissions to send and receive messages between any two communities are specified on each mail system in a permissions matrix (40), wherein each row (41) represents a different sender community, each column (42) represents a different recipient community, and the value stored at their intersection (43) indicates the permission vis-a-vis the two communities. A function (50) is invoked on the sender's mail system (1,2) at message addressing, and on the sender's and recipients' mail systems (1,2) at message delivery, to enable or prevent (FIG. 3) message sending or delivery according to the matrix-specified permissions. Optionally, a message-associated permission (410) may be used to override matrix-specified permissions.

REFERENCES:
patent: 3692951 (1972-09-01), Hestad et al.
patent: 3736383 (1973-05-01), Le Baron
patent: 4259549 (1981-03-01), Stehman
patent: 4799255 (1989-01-01), Billinger et al.
United States Department of Commerce Telephone Directory, Mar. 1987, p. VI.
AT&T System 85 Release 2, Versions 1-4 Features Reference Manual, Issue 1 (Jul. 1987) pp. 109-1 to 109-13.

Affiliated with

Also associated with

Rating

Restriction of communication service accessibility among subscri does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Restriction of communication service accessibility among subscri, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Restriction of communication service accessibility among subscri will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-241300