ZyXEL U-1496S Plus User Guide - Page 104

T401 Timeouts and T402 Timeouts

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Data bytes sent to remote modem. Octets Received Data bytes received from remote modem. Blocks Sent Blocks sent to remote modem. Blocks Received Blocks received from remote modem. Blocks Resent Number of blocks resent because of error. If there are too many resents, it may be a bad line or protocol incompatibility. Max Outstanding Error control protocol parameter. The maximum allowable number of blocks sent or received without acknowledgement. Max Block Size Error control protocol parameter. The maximum allowable number of octets in a block. Actual block size can be smaller. Retrains Requested Number of times the local modem has requested retrain. Each request is a bad receiving indication. Retrains Granted Number of times retrains requested by remote modem were granted. Link Duration Connection time in minutes. T401 Timeouts and T402 Timeouts They are for manufacturer checking link layer operation. T401 and T402 are timers used in MNP4 or V.42. T402 will count when modem is idle connected with no data to transmit or receive. FCS Errors Frame Check Sum Errors or number of block errors. Many FCS errors mean a bad line. Round Trip Delay

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Data bytes sent to remote modem.
Octets Received
Data bytes received from remote modem.
Blocks Sent
Blocks sent to remote modem.
Blocks Received
Blocks received from remote modem.
Blocks Resent
Number of blocks resent because of error. If there are too many resents, it may be a bad line or
protocol incompatibility.
Max Outstanding
Error control protocol parameter. The maximum allowable number of blocks sent or received
without acknowledgement.
Max Block Size
Error control protocol parameter. The maximum allowable number of octets in a block. Actual
block size can be smaller.
Retrains Requested
Number of times the local modem has requested retrain. Each request is a bad receiving
indication.
Retrains Granted
Number of times retrains requested by remote modem were granted.
Link Duration
Connection time in minutes.
T401 Timeouts and T402 Timeouts
They are for manufacturer checking link layer operation. T401 and T402 are timers used in
MNP4 or V.42. T402 will count when modem is idle connected with no data to transmit or
receive.
FCS Errors
Frame Check Sum Errors or number of block errors. Many FCS errors mean a bad line.
Round Trip Delay