Lucent Technologies 2300EU System Administrator Manual page 71

COD Failure Messages
The following diagnostic messages are used to facilitate
troubleshooting of ISDN line problems during COD (Call on
Demand) operation, the remote display telephone shows 'COD
Waiting,' followed by a message. Table 4-6 contains the possible
COD failure messages.
Table 4-6. COD Failure Messages
Message
Dialback The unit is in Dialback mode and the
Timeout Remote came out of COD, but never
received a Dialback call from the
Switch module.
ISDN Conn The unit comes out of COD mode
Lost and successfully connects, but the
connection is lost.
Note: If placing an outgoing call the
unit tries to reconnect.
V.42 Failed The units wake out of COD and
successfully establish a connection,
but were disconnected due to a V.42
failure.
Note: If placing an outgoing call the
unit tries to reconnect.
ISDN DEFINITY® Extender 2300EU/2100EU
Description Possible Cause
Switch unit could
not place an ISDN
call to the Remote.
Connectivity
problems with the
ISDN network.
Data problems on
the ISDN network.
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