Flashing An outgoing or incoming connection is being established on the specified B-channel. There is a successful connection on the specified B channel. The ISDN physical interface is not activated. The LINK LED might provide additional status information. Flashing The ISDN physical interface is activated and initializing.
Continuous flashing indicates an error in the initialization process.
No data transmission is possible. Most often, problems result from incorrectly entered SPIDs. The ISDN physical interface is not synchronized, or is improperly connected. The ISDN physical interface is synchronizing. Steady The ISDN physical interface is activated.