发明名称 |
System for supporting communications among ATM devices, device for supporting data transmission, method for sending data, and computer program product |
摘要 |
A first communication device receives an ATM cell bound for a second ATM device from a first ATM device via an ATM interface, and then the first communication device sends a data frame including the ATM cell to the second ATM device via wide area Ethernet. In addition, the first communication device sends a synchronization frame to the second ATM device via the wide area Ethernet continuously at a predetermined time interval in accordance with a clock frequency of the first ATM device. A second communication device receives the synchronization frame and measures a clock frequency of the first ATM device in accordance with a time interval of receiving the synchronization frame so as to reproduce a clock having the same frequency as the measured clock frequency. After that, the second communication device sends the clock to the second ATM device via an ATM interface.
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申请公布号 |
US7724751(B2) |
申请公布日期 |
2010.05.25 |
申请号 |
US20050113107 |
申请日期 |
2005.04.25 |
申请人 |
FUJITSU LIMITED |
发明人 |
UCHIMOTO NORIHISA;TATSUMI KOJI;SHIMAZAKI KAZUHISA;YAMADA KOICHIRO;NAMURA SATOSHI;MORIMOTO AKIO;KUSAYANAGI MICHIO |
分类号 |
H04L12/56 |
主分类号 |
H04L12/56 |
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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