DATA TRANSMISSION IN A MIXED MOBILE CELLULAR/PAGING RADIO SYSTEM

摘要

A telecommunication system is disclosed which allows messages to be transmitted via a cellular phone channel and a paging channel to a mobile unit having both a mobile telephone and a page receiver. The telecommunication system receives a data message for a subscriber from a calling device, which is routed to a mobile telephone switching office (MTSO) via a central switching office. The MTSO can transmit a data message to the mobile telephone in the mobile unit via a cellular phone channel, and can also send a message to a Universal Messaging System (UMS) to be sent to a pager in the mobile unit via a paging channel. When the system is unable to deliver a data message to the mobile telephone via the cellular channel, it can store the message at the UMS or MTSO and send an alerting message to the mobile unit via the paging channel indicating that a message has been stored for later retrieval. Alternatively, the system can send the entire data message via the paging channel.