POCSAG Page Store and Forward
The Model 55D is used to extend the range of a paging system by decoding and retransmitting pages. Connected to a receiver/transmitter in the range of the main transmitter, the Digital Repeater decodes the incoming POCSAG page, error corrects it, and stores the page in memory. When the channel is clear, it reconstitutes the page and retransmits it.

The digital repeater can use the paging system ID feature to only respond to pages with the correct System ID. Individual Zone Address Steering enables multiple Model 55Ds to extend the range over several units in a sequence.