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Priority claimed from PCT/US1983/000780external-prioritypatent/WO1983004359A1/fr
Publication of JPS59500944ApublicationCriticalpatent/JPS59500944A/ja
Publication of JPH0411061B2publicationCriticalpatent/JPH0411061B2/ja
Integrated communications control device for a small office configured for coupling within a scalable network including multiple simultaneous call capability