| 摘要 |
A home telephone system uses one or more super mini-private branch exchange (PBX) devices that enable telephone units on a same internal phone line to ring each other without involving a central office. After identifying a call as an internal call, the super mini-PBX devices may ring all other telephone units within the home. Alternatively, the home telephone system may assign different numerical numbers and/or ring styles to specific telephone units so that a specific telephone unit may be reached directly by dialing an assigned number from one of the telephone units within the home. When only one super mini-PBX exists, the home telephone system may assign different ring styles to reach a particular telephone unit. The home telephone system uses existing telephone equipment without the need of special wiring, thus improving in-home communication without the complexity or additional cost associated with intercom systems. In addition, the home telephone system affords private conversation within the home.
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