Telephone interface security device

Details Telephone interface security device Telephone interface security device

1987-08-07

1989-04-25

Ng, Jin F.

Telephonic communications

Terminal accessory or auxiliary equipment

Locking device

379399, 379438, 439133, 439135, 439372, H04M 115, H04M 900, H01R 1340, H01R 1346

Patent

active

048254665

ABSTRACT:
A telephone multiple pair network interface device provides a demarcation between the wiring owned by the telephone company and that owned by the customer. Security means are provided to prevent unauthorized access to the interface by other than the customer. Separate means are provided such that the telephone company has the ability to override the security means to permit testing or service of the telephone lines.

REFERENCES:
patent: 4488008 (1984-12-01), Dellinger et al.
patent: 4560839 (1985-12-01), Dillard
patent: 4584856 (1986-04-01), Petersdorff et al.
patent: 4647725 (1987-03-01), Dellinger et al.

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