1

074

1

Type

2

0 to 2¹⁶-1

2

Length

Total size in bytes, variable

3

0 to 2³²-1

4

Source ID

The unique identifier of the current node transmitting this message, as described in § 2.4, Annex 1.

4

0

1

Session ID

Session ID

5(1)

0 to 2³²-1

4

Destination ID

The unique identifier of the current node receiving this message, as described in § 2.4, Annex 1.

Set to 0 for broadcast.

6

0-255

1

Number of fragments

Number of fragments in this session.

Should be a value from 1 to 14.

7

0-255

1

Fragment number

Fragment number of the payload in this message. First fragment should start at 0, increment with any additional fragment and wrap at 255.

8

0-255

1

Continue data session

0 – Ends data session

1 – Continue data session with new

9

Variable

Payload

Notes:

Should always be transmitted on the TDMA channel (derived from the logical channel) as assigned by a resource allocation.

Will always be transmitted to carry payload of first data fragment.

(1)   Session ID is reserved for future use.