| 摘要 |
The present invention relates to a connection device, an exchange unit comprising such devices as well as methods of connecting signals within an exchange unit. The exchange unit comprises a connection device (61) having a message writing device (66), which adds, for each traffic channel received in a time slot in consecutive frames that are transmitted on a telecommunication line (PCM2), an address to a payload comprising at least a part of one signal received in said channel in order to form a message. The address points out a message reading device (68) and the message writing device sends the message to this message reading device for sending in some time slot in consecutive frames transmitted on a second, outbond telecommunication line (PCM3). The exchange unit also comprises a routing device (60) for each connection device, which together form a node in a hierarchical transport network comprising ring shaped highspeed links. A message writing device then sends messages to a message reading device via a routing device and possibly via other routing devices and bridges in the transport network. |
