SYSTEMS AND METHODS FOR ESTABLISHING A DIAGNOSTIC TRANSMISSION MODE AND COMMUNICATING OVER THE SAME
First Claim
1. A diagnostic link system for communicating data between modems using multicarrier modulation comprising:
- an initiate diagnostic mode trigger that instructs a transmitting modem to forward an initiate diagnostic mode message to a receiving modem;
a message determination device that determines a diagnostic link message; and
a receiving modem diagnostic device that receives the diagnostic link message and determines the accuracy of the diagnostic link message.
2 Assignments
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Accused Products
Abstract
Upon detection of a trigger, such as the exceeding of an error threshold or the direction of a user, a diagnostic link system enters a diagnostic information transmission mode. This diagnostic information transmission mode allows for two modems to exchange diagnostic and/or test information that may not otherwise be exchangeable during normal communication. The diagnostic information transmission mode is initiated by transmitting an initiate diagnostic link mode message to a receiving modem accompanied by a cyclic redundancy check (CRC). The receiving modem determines, based on the CRC, if a robust communications channel is present. If a robust communications channel is present, the two modems can initiate exchange of the diagnostic and/or test information. Otherwise, the transmission power of the transmitting modem is increased and the initiate diagnostic link mode message re-transmitted to the receiving modem until the CRC is determined to be correct.
0 Citations
2 Claims
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1. A diagnostic link system for communicating data between modems using multicarrier modulation comprising:
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an initiate diagnostic mode trigger that instructs a transmitting modem to forward an initiate diagnostic mode message to a receiving modem; a message determination device that determines a diagnostic link message; and a receiving modem diagnostic device that receives the diagnostic link message and determines the accuracy of the diagnostic link message.
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2-43. -43. (canceled)
Specification