Security features for an integral PLC modem

Details Security features for an integral PLC modem Security features for an integral PLC modem

2007-06-05

2007-06-05

Matar, Ahmad F. (Department: 2642)

Telephonic communications

Special services

Reserved call

C379S284000, C379S442000

Reexamination Certificate

active

10272114

ABSTRACT:
At least one exemplary embodiment of the present invention includes a method comprising receiving a connection request at a modem integral to a programmable logic controller, and allowing access to the programmable logic controller via the modem. At least one exemplary embodiment of the present invention includes a method comprising establishing a connection between a calling device and a modem integral to a programmable logic controller, and allowing the calling device access to the programmable logic controller via the modem. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. This abstract is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).

REFERENCES:
patent: 5018736 (1991-05-01), Pearson et al.
patent: 6556208 (2003-04-01), Congdon et al.
patent: 2003/0177979 (2003-09-01), Crum et al.
patent: 2 168 831 (1986-06-01), None
patent: 2 229 020 (1990-09-01), None
Court case.

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