| 摘要 |
This invention relates to an SDH transmission technique, wherein one SDH transmission equipment is provided with a first switching control part which performs a line switching control between a work line and a protection line in accordance with setting information on a line switching control and a setting information transfer part which transfers the setting information to other SDH transmission equipment as setting information at other SDH transmission equipment, while other SDH transmission equipment is provided with a setting information detection part which detects the setting information transferred from the one SDH transmission equipment and a second line switching control part which performs a line switching control at own side in accordance with the setting information detected by the setting information detection part. Accordingly, an occurrence of disagreement of setting information on the line switching control in an SDH transmission system can be prevented and a normal line switching control between opposite equipments can be always performed.
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