| 摘要 |
The present invention relates to telecommunication system/systems and is intended to make possible to implement in optical transmission networks. It provides a simple possibility to check the quality of channels after they having been put into operation, maintenance or after reconfigurations in the network. At optical cross-connectors (OXC), which are intended to control wavelength-channels, analyzers, which can generate and receive test sequences, which are standardized for different transmission protocols, for instance SDH according to ITU or Gigabit according to IEEE, are placed. FIG. 2 shows a possible procedure for testing of channels between two optical cross-connectors, OXC1 and OXC2. An analyzer (A 1), which is controlled from a control device for optical cross-connectors (NEM1), is connected to OXC1. A second analyzer (A 2), which is controlled from a second NEM (NEM2), is connected to OXC2. The first analyzer is connected to the second analyzer via a channel (21) between OXC1 and OXC2, at which said channel can be tested via control from NEM1 and NEM2, which intercommunicate. |
