Decoding POCSAG

Decoding POCSAG

The basic signaling pattern used in many pagers is a sequence of coded binary data using the Post Office Code Standardisation Advisory Group (POCSAG) code. The POCSAG code is a synchronous paging format that allows pages to be transmitted in a single-batch structure. The POCSAG code provides improved battery-saving capability and an increased code capacity. The POCSAG code format consists of a preamble and one or more batches of codewords. Each batch comprises a 32-bit frame synchronization code and eight 64-bit address frames of two 32-bit addresses or idle codewords each. The frame synchronization code marks the start of the batch of codewords.