Appendix A
Status Buffer Messages
STATUS LINE MESSAGES
Messages in all caps are generated by the ISDN network. Messages with lower case letters are generated by the ISU 512.
Call Connect B1
Bearer channel 1 connected and is currently active.
Call Connect B2
Bearer channel 2 connected and is currently active.
NET REM LOOPBACK
The ISU is performing a V.54 or DDS latching loopback toward the network.
Disconnecting
The current phone call is being disconnected (hung up).
LPBK DTE Port
The DTE connector is looped back in the DTE direction.
{1,2,3,4}:TEI1
The ISU is receiving the first Terminal Endpoint Identifier (TEI) from the net- work.
{1,2,3,4}:TEI2
The ISU is getting its second TEI from the network.
{1,2,3,4}:down
The network interface is not active.
{1,2,3,4}:NEOC
The ISU has been commanded to perform an ISDN loopback toward the net- work.
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