发明名称 Synchronous digital communications system
摘要 The synchronous digital communications system according to the invention serves to transmit electric signals optically. The electric signals to be transmitted are converted from electrical to optical form (E/O1, E/O2, E/On) and then transmitted using wavelength division multiplexing (WDM) or dense wavelength division multiplexing (DWDM). A synchronization manager and a connection manager are provided. The synchronization manager is adapted to configure dedicated optical synchronization links. The connection manager is adapted to configure switched optical communication links from a pool of wavelengths, taking account of the dedicated synchronization links only. This has the advantage that independently of the switched communication links, synchronization is constantly ensured throughout the system. Each network element (NE1, NE2, NE3) has at least one interface unit that is reserved for synchronization and that continuously receives signals at the wavelength (lambd1) reserved for synchronization.
申请公布号 US2001003485(A1) 申请公布日期 2001.06.14
申请号 US20000729780 申请日期 2000.12.06
申请人 WOLF MICHAEL JOACHIM 发明人 WOLF MICHAEL JOACHIM
分类号 H04B10/00;H04J3/00;H04J14/00;H04J14/02;H04L7/00;(IPC1-7):H04J14/00 主分类号 H04B10/00
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