Direct Distance Dialing (DDD) access is provided for a communications services platform. A caller may dial a local DDD number or a long distance DDD number to access the communications services platform. A platform may provide a plurality of different communications services, including voicemail services,...http://www.google.de/patents/US6018575?utm_source=gb-gplus-sharePatent US6018575 - Direct distance dialing (DDD) access to a communications services platform
