Netopia R310 사용자 설명서

The ISDN loopback test is designed to confirm the existence of a working ISDN line and the proper configuration 
of cer tain Netopia R310 ISDN Router parameters. This test is available only on switched ISDN lines.

Using the first B-channel, the test calls the Netopia R310 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.

Note: "Number to Dial Director y 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 repor ts one of three results:

Untested: The loopback test has not yet been run.

Loopback Test FAILED: The loopback test has failed. See 

 below, for troubleshooting 

suggestions.

Loopback Test PASSED.  The loopback test was successful. The line is working properly, and the director y 
numbers (the ISDN phone numbers associated with each B-channel) are correct.

                           ISDN Switch Loopback Test

         Number to Dial Directory Number 1: 5105776430
         Number to Dial Directory Number 2: 5105776431

                          Run Test Now

                          Status: Untested