作者: Yamaki Tatsumi , Ohzeki Kazuya , Fujiwara Kunihiko , Yaku Tadao , Isizaki Shogo
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摘要: A plurality of common control automatic switching offices are each provided with an ''''exchange-trunk information'''' unit for deriving exchange-trunk or load information representing the capacity exchange and interoffice trunk groups extending from exchange. One is equipped ''''availability translating sent all units into availability whether exchanges line available new calls. Each office further means responsive to controlling establishment connection.