Utilities and Diagnostics 16-13

ISDN Switch Loopback Test

The ISDN loopback test is designed to confirm the existence of a working ISDN line and the proper configuration of certain Netopia R3100 ISDN Router parameters. This test is available only on switched ISDN lines.

Using the first B-channel, the test calls the Netopia R3100 on the second B-channel, creating a call loop back to the unit.

To run the ISDN loopback test, select ISDN Switch Loopback Test in the Utilities & Diagnostics screen and press Return. The ISDN Switch Loopback Test screen appears.

ISDN Switch Loopback Test

Number to Dial Directory Number 1: 5105776430

Number to Dial Directory Number 2: 5105776431

Run Test Now

Status: Untested

Note: "Number to Dial Directory Number 1 and 2" fields are only visible if there are no DNs in the ISDN line configuration.

Select Run Test Now and press Return. The loopback test is executed immediately.

Note: Make sure neither B-channel is in use before you execute the loopback test.

The Status item reports one of three results:

Untested: The loopback test has not yet been run.

Loopback Test FAILED: The loopback test has failed. See “If the loopback test fails,” below, for troubleshooting suggestions.

Loopback Test PASSED. The loopback test was successful. The line is working properly, and the directory numbers (the ISDN phone numbers associated with each B-channel) are correct. If a SPID is associated with the first B-channel, its correctness is also confirmed. If a SPID is associated with the second B-channel, its correctness is confirmed. SPIDs are only applicable to certain North American ISDN switch protocols.

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Netopia R3100 manual Isdn Switch Loopback Test