Table 6-1 summarizes the NLI commands and their corresponding Packet Types and C structures:
Table 6-1 NLI Commands and Structures
These commands and structures in do not correspond to X.25 packet types:
Table 6-2 PVC and Listening Commands and Structures
NLI Command |
NLI Structure |
Description |
---|---|---|
N_PVC_ATTACH |
pvcattf |
Specify X.25 service to use with PVC |
N_PVC_DETACH |
pvcdetf |
Specify X.25 service to stop using with PVC |
N_Xcanlis |
xcanlisf |
Cancel listening |
N_Xlisten |
xlistenf |
Listen for incoming calls |
All of the structures listed in Table 6-1 and Table 6-2 are defined in the x25_primitives C union.
In addition to the structures that have a one-to-one mapping with NLI commands, Solstice X.25 provides a number of structures that are used by several of the commands. These are related to addressing and facilities, and are listed in Table 6-3:
Table 6-3 Generic Structures
structure |
function |
---|---|
xaddrf |
contains addressing information |
lsapformat |
defines the LSAP |
extraformat |
defines optional X.25 facilities |
qosformat |
defines OSI CONS Quality of Service (QOS) parameters |