6100 ADCCP Programming Manual

(72) LINE QUALITY
Requests and Responses
069225 Tandem Computers Incorporated 6–39
(72) LINE QUALITY The LINE QUALITY response is not an answer to any specific request. ADCCP sends
it to an application for one of three reasons:
The number of frames sent and received exceeds the value of the SYSGEN
THRESHOLD parameter.
An error occurs that causes ADCCP to place a station in the ERRORSTOP
condition. An example of such an error is when the number of retries specified by
L2RETRY is exhausted.
One or more link error counters have wrapped around to zero. (See the
(5) FETCH STATISTICS request and response.)
The response buffer format is:
Response := 72
Status := 0
Request ID := 0
Text Out := 0
Text In := 6
Text := Station ID :Byte
If a station was disabled, this byte
contains the station ID. Otherwise, the
value is 0.
Status :Byte
This byte contains the code for the error
that caused the station to be disabled.
For a list of status codes and their
definitions, see “Status Code
Definitions” at the end of this section.
Total frames sent and received :Word
Total link errors :Word
The description of the FETCH STATISTICS
response lists the link errors.