H - Electricity – 04 – J
Patent
H - Electricity
04
J
H04J 99/00 (2009.01) H04J 3/06 (2006.01) H04J 3/16 (2006.01) H04Q 11/04 (2006.01) H04J 15/00 (2006.01)
Patent
CA 2103804
Abstract of the Disclosure In a cross-connect multiplexer (CCM2), a plurality of interface units, among others those (AE1) for STM-1 signals of the synchronous digital hierarchy (SDH), are connected to a space-division switching network (RKF). The section overheads of these synchronous transport modules (STM-1) overall are partly received and analyzed and partly multiplexed and sent out in a section overhead server (SOHS) with the assistance of a network control unit (NCU). This process is simplified by STM-1 signals being converted into a plurality of D39 signals, known per se, of a bit rate of 38.912 Mbit/s, and conversely, only bytes necessary for transmission of the section overheads being inserted into only one of the sixteen frame columns of a D39 signal belonging to the STM-1 signal via the space-division switching network (RKF). It is only these special columns of in each case sixteen STM-1 signals which are combined to form a separate D39 signal which is received or transmitted by the section overhead server (SOHS). Such cross-connect multiplexers (CCM2) are used in network nodes of digital networks. Figure 4
Aktiengesellschaft Siemens
Fetherstonhaugh & Co.
Muller Horst
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