Link Status Report (Ati2) - ZyXEL Communications U-1496 series User Manual

The count of blocks retransmitted (Bad receiving on the remote modem).
FCS (Frame Check Sum) Errors (FE)
The count of FCS errors received (block errors) (Bad receiving on local modem).

LINK STATUS REPORT (ATI2)

During a connection, the modem will record information about link operations. You can use an
AT command (ATI2) to see the summary, as in the following sample:
ZyXEL U-MODEM LINK STATUS REPORT
Chars Sent 2420
Octets Sent 950
Blocks Sent 13
Blocks Resent 0
Max Block Size 256
Link Duration 1
T401 Timeouts 0
FCS Errors 0
Xmitter Underrun
Last Speed/Protocol
Disconnect Reason
This Link Status Report is very helpful in finding out the link condition and what is wrong with the
link, if anything. Following are the explanations for each item and terminology used in this report.
Chars
Data characters transmitted between DTE (computer/terminal) and modem.
Octets
Data bytes transmitted between the modems, handled by error control protocol, may be
compressed data. Data compression efficiency may be seen from the ratio of chars count to
octets count.
Block
Framed octets transmitted between error control protocols of the two modems.
Chars Sent
Characters sent from DTE to modem for transmission.
Chars Received
Characters received by modem from line and sent to DTE.
Octets Sent
Chars Received2420
Octets Received
Blocks Received
Max Outstanding
Retrain Requested
Retrain Granted0
T402 Timeouts 0
Round Trip Delay
0 Receiver Overrun
Connect 14400/ARQ/V42b
Local Hang Up
950
13
8
0
110
0