| 摘要 |
<p>The distribution service centre (70) supplies multimedia services to a number of peripheral hubs (20) each linked to an ATM exchange (10), a narrowband network interface (17) and a variety of optical broadband network termination units (60, 65). The hub contains an ATM switch matrix (21), a narrowband multiplexer (22) and several optical line termination units (23). The 64 kbit/s stream of ATM cells is modulated with others in synchronous TDM on a carrier for transmission to the hub, where it is demodulated, buffer-stored and multiplexed together with streams from other subscribers into an aggregate stream of conventional capacity.</p> |
| 申请人 |
ALCATEL SEL AG, 70435 STUTTGART, DE |
发明人 |
ORLAMUENDER, HARALD, DIPL.-ING., 71254 DITZINGEN, DE;BELLER, DIETER, DIPL.-ING., 70825 KORNTAL-MUENCHINGEN, DE;BANNIZA, THOMAS ROLF, DIPL.-ING., 71282 HEMMINGEN, DE;HOMANN, CHRISTIAN, DIPL.-INFORM., 71229 LEONBERG, DE;GOSGER-HEILMANN, KLAUS, DIPL.-ING., 70199 STUTTGART, DE;WOZNY, HANS, DIPL.-ING., 71672 MARBACH, DE |
