User`s guide

3: ADCCP NRM DLI Functions
DC 900-1317J 57
The ICP sends to the client a DLI_PROT_RECV_STATION_INIT packet with zero in the
iProtModifier field following detection of a completed SIM/UA or RIM/SIM/UA
exchange on the link. This indicates that both the local and remote stations are in ini-
tialization mode.
The ICP sends to the client a DLI_PROT_RECV_STATION_INIT packet with one in the
iProtModifier field following receipt of a DLI_PROT_SEND_STATION_INIT packet with one in
the
iProtModifier field. In this case, only the local station is placed in the initialization
mode; the change is transparent to the remote station.
The client may receive this packet as a response to sending a DLI_PROT_SEND_STATION_INIT
packet to the ICP or as an unsolicited ICP packet. In either case, the client does not
respond to the ICP packet, but immediately places the indicated station in the initializa-
tion state. Once again, the client adopts total responsibility for defining and adhering to
the link-level protocol used in initialization state operation (see Section 3.4.1).
3.4.3 DLI_PROT_SEND_UNFORMATTED_DATA Packet
This packet is valid only if the client has enabled ADCCP option 5 (see Section 3.4.20.2)
for the specified station and the station is in the initialization state. The client must
specify the
usProtCommand field (DLI_PROT_SEND_UNFORMATTED_DATA), the
usProtXParms[0] field (station ID), the usProtXParms[1] field (data size), and the data
field contents. The ICP transmits the contents of the data field with a trailing frame
check sequence (FCS). The client has total responsibility for handling all initialization
protocol requirements.
The ADCCP protocol does not define data flow control for unformatted frames. There-
fore, the client is responsible for not swamping the ICP with
DLI_PROT_RECV_UNFORMATTED_DATA packets. If the client does overload the ICP, the ICP
simply stops accepting input from the client; the client cannot send additional control
packets to the ICP until the ICP’s buffer congestion clears. If buffer congestion occurs