Key telephone system

H - Electricity – 04 – M

Patent

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Details

H04M 1/72 (2006.01) H04M 1/65 (2006.01) H04M 9/00 (2006.01) H04M 3/533 (2006.01)

Patent

CA 2231892

This invention enables the key telephone system to send a busy tone to a party calling on a main extension number when a telephone call to the main extension number is received when a pseudo extension number is in use. The receiving mode is memorized in the memory of the main unit. When a telephone call to the main extension number is received when the pseudo extension number is in use, a busy tone can be sent to the calling party on the main extension number. According to this invention, the calling party thus knows that the key telephone set, which is the destination of his call, is busy.

L'invention permet à un téléphone à clavier de transmettre une tonalité d'occupation à un appelant qui cherche à communiquer avec un numéro de poste principal quand un appel est reçu à ce numéro de poste principal alors qu'un numéro de pseudoposte est utilisé. Le mode de réception est versé dans la mémoire de l'unité principale. Quand un appel est reçu au numéro de poste principal alors qu'un numéro de pseudoposte est utilisé, une tonalité d'occupation peut être transmise à l'appelant sur le numéro de poste principal. Avec la présente invention, l'appelant sait que le téléphone à clavier qui est la destination de son appel est occupé.

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