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NDA-24233 Issue 2 Page 5-1
VisuaLink 128/384 Engineering Guide Factors of Disconnections
5: List of Factors for Disconnection in Table
Location of Factors for Disconnection
LU: Local User LN: Local Network TN: Transit Network RU: Remote User RN: Remote Network
Number Message Factors for Disconnection Countermeasure (Example) Location
# 1 Unassigned
number
Call cannot come in since it is
currently a unassigned number.
Check the remote number. LN/RU
# 2 No route to
specified transit
network
Specified transit network cannot be
recognized.
Check the remote number. TN/LN
# 3 No route to
destination
No route to remote site. Check the remote number. LN/RU
# 6 Cancel
unacceptable
A channel cannot be accepted in a
network.
After a while, retry connection. LN
# 7 Remote is busy Connected channel is used. After a while, retry connection. LN
# 16 Normal is busy A restoration of a disconnection of a
call is requested.
Try again RU
# 17 User busy It is currently in a communication
with others.
After a while, make a
connection again.
RU/RN
# 18 No user response No response Check status of remote unit. RN
# 19 User alerting, no
answer
No response after a call message is
received.
Check status of remote unit. RN
# 21 Call rejected Communication is rejected. Check status of remote unit. RU
# 22
Number changed
Remote terminal number has been
changed.
Check remote number, make
another connection.
LN/RU
# 26 Non-selected user
clearing
No incoming bell After a while, retry. LN
# 27 Destination out of
order
Remote terminal is OFF Check status of remote unit. RU
# 28 Invalid number
format (address
incomplete)
Invalid format or incomplete
number.
Check remote number and
retry.
LN/RU/
RN
# 29 Facility rejected Requested facility is not allowed. Check remote number. LN/RU/
RN
# 30 Response to
STATus ENquiry
Inquiry for status was received. Check remote number and
retry.
LU/LN
# 31 Normal,
unspecified
Normal status was reported. After a while, retry. RN
# 34 Circuit/channel
congestion
No line or channel is available. Check communication status. LN/RN/TN
# 38 Line failure Network is not functioning normally. After a while, retry. LU/LN/RU
# 41 Temporary failure Network is temporarily not available. After a while, retry. RN
# 42 Switching
equipment
congestion
Switch is busy. After a while, retry.
# 43 Access information
discarded
Requested information element
cannot be transmitted to a remote.
After a while, retry.
# 44 Requested channel
not available
Reported line or channel cannot be
provided.
After a while, retry. LN/RU
# 47 Resource
unavailable,
unspecified
Report status that other network is
busy.
Contact a retailer or a service
center.
# 49 This service is
currently not
available
QOS cannot be provided. RU/RN/
LN