ACC Error Guide

ZX25D System Messages
CLASS: Protocol 600-699
Chapter 12 275
zx25d 603 Link ZLU <#> disconnected due to loss of Carrier Detect.
Mux= <#>, Port= <#>, Subchannel= <#>.
Explanation: The X.25 link has gone down because the modem line
Carrier Detect (CD) has dropped. That is, X.25 at level
1 is down and has not come back up. Note that the X.25
link Poll word bit CTS can control how the firmware
behaves with respect to the CD and CTS modem lines.
Action: No action is necessary. This is an informational
message.
zx25d 604 Link ZLU <#> disconnected due to loss of CTS.
Mux= <#>, Port= <#>, Subchannel= <#>.
Explanation: The X.25 link has gone down because the modem line
Clear-To-Send has dropped. That is, X.25 at level 1 is
down and has not come back up. Note that the X.25
link Poll word bit CTS can control how the firmware
behaves with respect to the CD and CTS modem lines.
Action: No action is necessary. This is an informational
message.
zx25d 605 Link ZLU <#> down; exceeded N2 retransmit limit.
Mux= <#>, Port= <#>, Subchannel= <#>.
Explanation: The X.25 link has experienced transmission errors and
the HDLC/LAP-B link has gone down because the N2
retransmission counter has been exceeded. The X.25
subsystem has been unable to re-establish the link at
level 2.
Action: No action is necessary. This is an informational
message.