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Chapter 6. Data Port Configuration
6-4 TSU IQ+ User Manual 61200275L1-1
Frame Relay Options (FR OPTS)
The frame relay protocol is a synchronous protocol used to
concentrate two different devices into a common frame relay link to
the network. The TSU IQ+ accepts frame relay frames from a
router or a FRAD (frame relay access device) and routes to/from
the network port based on the DLCI address. Use the following
selections to determine timeout intervals and error thresholds, and
to configure PVC management settings.
T392
Set the timeout (in seconds) between polling intervals. This
parameter needs to be a few seconds longer than the T391 setting of
the attached frame relay device. Range is 5 to 30 seconds.
N392 and N393
These parameters define the error threshold for the UNI (user to
network interface) formed by the TSU IQ+ DTE port and the
attached frame relay device. If the error threshold is met, the
signaling state status is changed to down, which indicates a
service-affecting condition. This condition is cleared once N393
consecutive error-free events are received. N392 defines the
number of errors required in a given event window, while N393
defines the number of polling events in each window.
For example:
If N392=3 and N393=4, then if three errors occur within any four
events, the interface is determined inactive.
The status of the connection can be viewed in the DTE P
ORT
S
TATISTICS
menu (see the section Signaling State on page 10-6). The
status returns to A
CTIVE
once the threshold is no longer exceeded.
The range is 1 to 10.