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if your telephone numbers and SPIDs (North America only) are correct. If they
are, the Port Monitor displays something similar to the text in Figure 4.
Figure 4: ISDN Port Monitor w/Successful Initialization
Explanation of Indicators
LA: (line active) indicates a successful connection to NT-1 and ISDN service
D: indicates correct SPID (North America only)
B1: indicates a 64k connection on the first line (only if communicating or making
a call)
B2: indicates a 64k connection on second line (only if communicating or making
a call)
If your ISDN service does not initialize, refer to Chapter 6: Troubleshooting.
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