DATA PREAMBLE REGISTRATION SERVICE PROCEDURE
Original Publication Date: 1997-Mar-01
Included in the Prior Art Database: 2002-May-09
In an APCO 25 compliant integrated digital voice/data conventional radio system, scanning data messages (Figure 1) is difficult because the most important information of the data message is in the first part of the message (Figure 2). This part of the data message must be received in its entirety to suc- cessfully receive the message. In order to make scanning data messages easier a preamble can pre- cede the message. However, adding this preamble to all data messages will reduce the system's data throughput. Note that all values are approximate.