3M 965DPS instruction manual Isdn Error Test supported countries only

ISDN Error Test (supported countries only)

The 965DSP can perform a near-end and far-end block error test after linking to an active ISDN line.

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Note: This function is suppressed in countries where ISDN interoperability with the 965DSP Block Error Test has not been verified.

The 965DSP will count and display the number of near-end and far-end errors.

“Near-end” errors are the errors detected at the 965DSP. “Far-end” errors are errors detected at an ISDN line card. (The far-end count is transmitted to the 965DSP over the ISDN link.)

The screen displays the elapsed time since the start of the ISDN Error Test. Standard practice is to monitor the line for a fixed period of time (for example, 5 or 15 minutes) and count the number of errors.

Near-end and far-end errors are “blocks” of bit errors. If there are no block errors in a given period of time, this insures there will be no bit errors in the same period.

The 965DSP will automatically stop counting errors after 15 minutes.

The word “Link” will be displayed as long as the 965DSP is linked to the ISDN line. If the link is lost, the screen will display “Link Lost.”

Press the [Enter] key to start the test again.

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