Bay Networks Marlin Reference Manual page 168

Nautica Marlin Bridge Reference Guide
5-8
If all is working well, the ISDN Port Status screen will show both
the outgoing and incoming calls made from and to the unit. If
there is a problem, the error code sent by the network or generated
internally will be displayed against ISDN1. At the conclusion of
the testing, reboot the bridge to restore the saved configuration.
Common ISDN problems include code 50, where the line has not
been provisioned correctly, and code 146, which indicates that a
local directory number of SPID has been set incorrectly. In these
cases, please check the line configuration with your telephone
company, and get them to specify exactly the local directory
number and SPIDs to be used (including any user-assigned
suffixes that may be required).
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