Introduction to Paging Systems: One-Way, Two-Way, POCSAG, ERMES, FLEX, REFLEX & INFLEXION by Lawrence Harte

Author:Lawrence Harte [Harte, Lawrence]
Language: eng
Format: azw3
Publisher: UNKNOWN
Published: 2017-03-20T04:00:00+00:00

Figure 1.6, ERMES Modulation Table The ERMES radio channel is divided into sequences of 60 seconds and these sequences are divided into 60 cycles. The sequences are synchronized to coordinated universal time (UTC). Each cycle is further divided into subsequences of 12 seconds each. Each subsequence is divided into 16 batches (paging groups) and each batch contains a synchronization, system information, address, and text part.

Figure 1.7 shows the basic structure of the ERMES radio channel. This diagram shows that the radio channel is divided into sequences of 60 seconds and each sequence is divided into 60 cycles. Each cycle is further divided into subsequences of 12 seconds each which is divided into 16 batches (paging groups). This example shows that each batch contains a synchronization, system information, pager address, and data (text) part.

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