Technical data

service_code: 1 byte, format: KH
This identifies the type of service requested for the
transmitting job buffer:
SDA=00
H
SDN=01
H
SRD=03
H
RPL_UPD_S=06
H
RPL_UPD_M=07
H
This identifies the type of service provided by layer 2
for the received job buffer.
SDA=00
H
SDN=01
H
SRD=03
H
only with FDL confirmation:
RPL_UPD_S=06
H
RPL_UPD_M=07
H
only with FDL indication:
SDN_MULTICAST=7F
H
link_status: 1 byte, format: KH
Table 8.1 describes the link_status for a confirmation
Table 8.2 describes the link_status for an SRD
indication
service-class: 1 byte, format: KH
Service class specifies the priority of the service
Low = 00
H
High = 10
H
DSAP/RSAP: 1 byte, format: KH
When transmitting, number of the destination SAP
coded in hexadecimal (default SAP = FF
H
)
When receiving, number of the remote SAP, coded in
hexadecimal (default SAP = FF
H
)
Free Layer 2 Communication B8976060/02
Volume 1 8 - 6