User guide

34 DC 900-1303C
Freeway Client-Server Interface Control Document
Echo request (4)
Not implemented at this time.
Echo reply (5)
Not implemented at this time.
ACK (6)
There is no data area accompanying this packet and the Data Length field
must be 0.
NAK (7)
There is no data area accompanying this packet and the Data Length field
must be 0.
ACK data (8)
Not implemented at this time.
NAK Data (9)
Not implemented at this time.
First Segment (2 bytes)
This field is not used.
Last Segment (2 bytes)
This field is not used.