Compressed Status Report Frames

A compressed status report frame has a payload of between 6 and 24 bytes.

Callsign	SSID, Path Code & Data Type Code	Compressed Data
4 bytes	1 byte	1—19 bytes
CCCC	D	t(tttt…tttt)

where:

• CCCC: 4 bytes for the compressed 6 character Callsign

• D: compresses into 1 byte:

  • the SSID (between SSID 0 [none] and 15; included),

  • the Path Code (between path 0 [none] and 3; included), and

  • the Data Type Code = 1

• t(tttt…tttt): between 1 and 19 bytes of compressed text from a limited 42 character set, corresponding to a maximum of 28 uncompressed characters