ZyXEL Communications U-1496 series Manual de usuario descargar pdf (Pagina 103)

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 Chars Received2420

Octets Sent 950 Octets Received 950

Blocks Sent 13 Blocks Received 13

Blocks Resent 0 Max Outstanding 8

Max Block Size 256 Retrain Requested 0

Link Duration 1 Retrain Granted0

T401 Timeouts 0 T402 Timeouts 0

FCS Errors 0 Round Trip Delay 110

Xmitter Underrun 0 Receiver Overrun 0

Last Speed/Protocol Connect 14400/ARQ/V42b

Disconnect Reason Local Hang Up

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

1 2 ... 98 99 100 101 102 103 104 105 106 107 108

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ZyXEL Communications U-1496 series Manual de usuario Pagina 103