发明名称 |
DIAGNOSTISCHE VERFAHREN UND SYSTEME FÜR MEHRTRÄGERMODEMS |
摘要 |
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. |
申请公布号 |
AT343879(T) |
申请公布日期 |
2006.11.15 |
申请号 |
AT20010901808T |
申请日期 |
2001.01.08 |
申请人 |
AWARE, INC. |
发明人 |
KRINSKY, DAVID, M.;PIZZANO, ROBERT, EDMUND, JR. |
分类号 |
H04L29/14;H04B3/46;H04L1/00;H04L1/18;H04L1/24;H04L5/14;H04M3/22;H04M3/30;H04M11/00 |
主分类号 |
H04L29/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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