Key telephone system with means for operatively connecting anoth

Details Key telephone system with means for operatively connecting anoth Key telephone system with means for operatively connecting anoth

1986-03-25

1987-02-03

Rubinson, Gene Z.

Telephonic communications

Multi-line or key substation system with selective switching...

Detail of hold circuitry

379163, H04Q 520

Patent

active

046413375

ABSTRACT:
A key telephone system comprising a main equipment and a plurality of key telephones connected to the main equipment and comprising elements for operatively connecting another similar key telephone system. The main equipment in the key telephone system comprises a system call transmitting interface and a system call receiving interface which are connected through connecting lines to a system call receiving interface and a system call transmitting interface in a main equipment of another similar key telephone system, respectively. Each key telephone in both systems comprises an additional key for selecting the system call transmitting interface of its own main equipment. By use of the additional key in one key telephone, a speech path can be established between the one key telephone and another key telephone in another key telephone system through both main equipments and the connecting line. By operation of the additional key after operation of a holding key of a key telephone in a key telephone system, an office line call to the key telephone is transferred to a key telephone in the other key telephone system through the connecting line.

REFERENCES:
patent: 4160131 (1979-07-01), Kaul et al.
patent: 4184054 (1980-01-01), Shibata et al.
patent: 4347409 (1982-08-01), Ogawa et al.

Affiliated with

Also associated with

Rating

Key telephone system with means for operatively connecting anoth does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Key telephone system with means for operatively connecting anoth, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Key telephone system with means for operatively connecting anoth will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1095583