| 摘要 |
Not only when it identifies a special segregation code and a line code or group code dialled by an authorised subscriber station, but also when it identifies these codes following a special code, the central controller (ZS 1) controls the direct connection to this line or, if the line is not free, the storage of the line address with its allocation to the access point concerned. As a result, switching activity is simplified when different line groups (B1...Bm) are used. <IMAGE>
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