Method for automatically setting transfer mode in line...

Details Method for automatically setting transfer mode in line... Method for automatically setting transfer mode in line...

2003-02-05

2008-03-18

Duong, Frank (Department: 2616)

Multiplex communications

Diagnostic testing

Loopback

Reexamination Certificate

active

07346004

ABSTRACT:
Disclosed is a method for setting a transfer mode in a line interface device for supporting at least two modes. The method for automatically setting a data transfer mode of a line interface device includes the steps of: a) reading all modes supportable in a line interface mode, generating a test message for requesting a loopback operation according to the order of the read modes, and transmitting the test message via a transmission line; b) upon receiving the test message within a predetermined period of time, setting a transfer mode used for transferring the test message to a data conversion mode of the line interface device, and informing a main controller of the system of the data conversion mode setup; c) repeatedly performing the steps (a) and (b) to set the next mode according to the order of the modes, if the test message for requesting the loopback operation message is not received within the predetermined period of time; and d) transmitting a mode setup denial message to the main controller of the system, if it is impossible to set a mode after a mode setup trial has been applied to all the read modes.

REFERENCES:
patent: 5202899 (1993-04-01), Walsh
patent: 5491720 (1996-02-01), Davis et al.
patent: 5579300 (1996-11-01), Lee et al.
patent: 5581228 (1996-12-01), Cadieux et al.
patent: 5896427 (1999-04-01), Muntz et al.
patent: 6157659 (2000-12-01), Bird

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