Digital switching system with shared analog line

Details Digital switching system with shared analog line Digital switching system with shared analog line

2006-06-06

2006-06-06

Tieu, Benny Quoc (Department: 2642)

Telephonic communications

Subscriber line or transmission line interface

Network interface device

C379S242000, C379S093070, C379S106080

Reexamination Certificate

active

07058175

ABSTRACT:
An auxiliary connection mechanism for allowing a Digital Switching System (DSS) to share an analog line with an analog device (via an auxiliary device port) is disclosed. The auxiliary connection mechanism includes a pair of relays for releasably connecting the auxiliary device port and the DSS to the analog line. When the analog line is idle, both the analog device and the DSS are connected to the line in order to receive incoming calls on the analog line. However, once one of the devices (either the analog device or the DSS) uses the line, the other device should not access the line. A busy line detect circuit is included to detect whether a device is using the line.

REFERENCES:
patent: 3403383 (1968-09-01), Kienzle et al.
patent: 4286119 (1981-08-01), Stelte et al.
patent: 4293738 (1981-10-01), Stelte et al.
patent: 4435803 (1984-03-01), Das et al.
patent: 4967408 (1990-10-01), Phan
patent: 5150357 (1992-09-01), Hopner et al.
patent: 5305312 (1994-04-01), Fornek et al.
patent: 5381462 (1995-01-01), Larson et al.
patent: 5422939 (1995-06-01), Kramer et al.
patent: 5671251 (1997-09-01), Blackwell et al.
patent: 6343126 (2002-01-01), Stelman
patent: 6693997 (2004-02-01), Suffern et al.
patent: 6839425 (2005-01-01), Huang et al.

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