Publishing Venue
Motorola
Related People
Authors:
Ng Yang Kian
•
Wan Tat Chee
Abstract
Two-way radios of a two-way radio communica- tion system can link to landline telephones for voice communications. However, there are no facilities to forward messages, such as voice messages and text messages, from other wireless services such as paging systems. Proposed in this article is a message forwarding unit (MFU) to forward messages from a paging system to a two-way radio communication system.
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MOTOROLA Technical Developments
MESSAGE FORWARDING UNIT FOR TWO-WAY
RADIO COMMUNICATIONS
by Ng Yang Kian and Wan Tat Chee
Two-way radios of a two-way radio communica- tion system can link to landline telephones for voice communications. However, there are no facilities to forward messages, such as voice messages and text messages, from other wireless services such as paging systems. Proposed in this article is a message forwarding unit (MFU) to forward messages from a paging system to a two-way radio communication system.
As shown in Figure 1, public text messages from the paging system are transmitted from a paging service transmitter on a paging channel to the MFU. The MFU can also receive voice messages via voice mail interfaces connected to telephones and addi- tional text messages via modems. A control module within the MFU coordinates message forwarding of these public text and voice messages to the two-way radio communication system. The control module can be integrated with a dispatch console for opera- tion as a dispatch channel within the two-way radio communication system. Data from the public text and voice messages are stored in data banks associ- ated with the control module. These data may be reformatted by the control module for transmission to two-way radios via one or more repeaters on a messaging channel. Each of these radios can be identified with a messaging and/or selective call identification. The repeaters can be optionally equipped with telephone interconnects for commu- nication links between the radios and the telep...
