User's Guide

Base Station States
165
The following table describes base station actions:
RNR Received An RNR frame was received from the sub station.
REJ Received An REJ frame was received from the sub station.
FRMR Received An FRMR frame was received from the sub station.
RD Received An RD frame was received from the sub station.
Response TO The response timer expired indicating that the sub sta-
tion did not send a response frame within the expected
time frame.
Actions:
Actions:Actions:
Actions: Description:
Description:Description:
Description:
Send RR Poll The RR command frame with poll bit set queries the
sub station to see if it has data to send or if it has a
change in status. Also, the RR carries the Nr count
acknowledging the Nr-1 frame sent by the sub station.
Send SNRME The SNRME frame starts the communications session
with the sub station. It resets the Nr and Ns counts.
Send XID The XID command sends configuration information to
the sub station.
Set Poll Timer The poll timer generates a poll timeout event upon
expiration of the poll timer.
Set Response Timer The response timer generates a response timeout
event upon expiration of the response timer.
Send DISC The DISC command terminates the communications
session with the sub station.
Send I-Frame I-Frames carry bridged and routed LAN traffic.
Send UI-Frame UI-Frames carry bridged and routed broadcast LAN
traffic.
Send RNR Frame The RNR frame indicates to the sub station that the
base station is congested and will have to retransmit
previously sent I-Frames.
Events:
Events:Events:
Events: Description:
Description:Description:
Description: