Arrangement for coupling optional auxiliary devices to terminal

Details Arrangement for coupling optional auxiliary devices to terminal Arrangement for coupling optional auxiliary devices to terminal

1996-06-21

1999-03-16

Patel, Ajit

Multiplex communications

Channel assignment techniques

Details of circuit or interface for connecting user to the...

370421, 370426, H04L 1266

Patent

active

058838961

ABSTRACT:
The arrangement is for coupling optional additional equipment to terminal equipment of private branch exchanges via an additional equipment interface, particularly according to the ETSI standard. The terminal equipment has an option bus via which arbitrary additional equipment can be connected. An additional equipment driver specific to the additional equipment and that represents the additional equipment interface is provided in the private branch exchange. The terminal equipment provides a communication channel between the additional equipment and the additional equipment driver in the private branch exchange via which the additional equipment and the additional equipment driver communicate according to a protocol specific to the additional equipment.

REFERENCES:
patent: 4736361 (1988-04-01), Cooperman et al.
patent: 5305312 (1994-04-01), Fornek et al.
patent: 5349640 (1994-09-01), Dunn et al.
patent: 5450486 (1995-09-01), Maas et al.
patent: 5631955 (1997-05-01), Adam et al.
patent: 5717692 (1998-02-01), Blackwell
ETSI DRAFT pr-I-ETS 300 245-4, Intergrated Services Digital Network (ISDN) Technical charateristic of telefony terminals, Part 4: Additional Equipment Interface (AEI), Jun. 1993.
Blab, H. et al,: Dopplenutzen mit Zweikanaltelefonen, In telecom report 14 (1991) vol. 6, pp. 307-309.

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