A method for operating an integrated communications system providing voice and data communications to a plurality of users and simulating a key system. An outside line appearance is provided on a telephone coupled to the system; the outside line appearance is associated with a predetermined outside telecommunications...http://www.google.fr/patents/US20040001579?utm_source=gb-gplus-shareBrevet US20040001579 - Systems and methods for voice and data communications including hybrid key system/PBX functionality
Systems and methods for voice and data communications including hybrid key ...
Numéro de demande: 10/188,002 Numéro de publication: US 2004/0001579 A1 Date de dépôt: 1 juil. 2002 Brevet délivré: US7006614 ( Date de délivrance 28 févr. 2006)
