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ISDN
Use this function to detect a 2B1Q ISDN signal
on a pair, and to measure near-end and far-end
errors on an active ISDN line.
2B1Q ISDN is sometimes called NI (National
Implementation) ISDN.
Note: the 965DSP-B will not detect older ISDN
formats (such as ATT AMI, NTI AMI, etc.).
Connect the Red and Black leads to the pair and
press the [Enter] key. The 965DSP-B displays
the word “Connecting” while the test set goes
through three steps:
1) AIP (Activation In Progress),
2) Sync (Synchronization) , and
3) Link. (successful connection).
If any of these three tests is unsuccessful, the
words “Link Failed” show in the screen.
Once a link is established with an ISDN signal,
the screen will display “Link Completed” in the
main screen and “Error Test” at the bottom.
Press the [Enter] key to perform an Error Test
on the active pair.