ADTRAN TSU IQ+, 1204002L2 user manual Frame Relay Options FR Opts, T392, N392 and N393

Chapter 6. Data Port Configuration

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 PORT

STATISTICS menu (see the section Signaling State on page 10-6). The status returns to ACTIVE once the threshold is no longer exceeded. The range is 1 to 10.

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