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Application filedfiledCritical
Priority to JP50114567ApriorityCriticalpatent/JPS5238801A/ja
Publication of JPS5238801ApublicationCriticalpatent/JPS5238801A/ja
Publication of JPS5533216B2publicationCriticalpatent/JPS5533216B2/ja
H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
H04M11/02—Telephonic communication systems specially adapted for combination with other electrical systems with bell or annunciator systems
H04M11/022—Paging systems
H—ELECTRICITY
H04—ELECTRIC COMMUNICATION TECHNIQUE
H04M—TELEPHONIC COMMUNICATION
H04M3/00—Automatic or semi-automatic exchanges
H04M3/42—Systems providing special services or facilities to subscribers
H04M3/50—Centralised arrangements for answering calls; Centralised arrangements for recording messages for absent or busy subscribers ; Centralised arrangements for recording messages
H04M3/53—Centralised arrangements for recording incoming messages, i.e. mailbox systems