Page 5-2 NDA-24233 Issue 2Factors of Disconnections
Number Message Factors for Disconnection Countermeasure (Example) Location
# 50 Requested facility
not subscribed Procedure for a requested facility is
not taken. Contact a retailer or a service
center. LN
# 57 Bearer capability
not authorized Unauthorized transmission
capability was requested. Contact a retailer or a service
center. LN
# 58 Bearer capability
not presently
available
Transmission capability currently
not available for use. Contact a retailer or a service
center. LN
# 63 Service or option
not available Report that other services cannot be
used. Contact a retailer or a service
center. LN
# 65 Bearer capability
not implemented Requested transmission capability
is not supported. Contact a retailer or a service
center.
# 66 This service is
currently not
available
Requested channel class is not
supported. Contact a retailer or a service
center. RU/RN/
LN
# 69 Requested facility
not implemented Requested additional service is not
supported. Contact a retailer or a service
center.
# 70 A connection could
not be made Limited digital transmission
capability among requested
transmission capabilities is
supported.
Contact a retailer or a service
center. LU/LN
# 79 Service or option
not implemented Report that a service cannot be
provided. After checking a remote
number, retry.
# 81 Invalid call
reference value Different dial number from the
currently used number is used. After checking a remote
number, retry. LN
# 82 Please dial again Invalid channel number is used. After checking a remote
number, retry. LN
# 83 A connection could
not be made A different number from the in terrupt
call discriminating number is used. After checking a remote
number, retry. LN
# 84 A connection could
not be made Th e interrupt call discriminating
number currently in use is used. After checking a remote
number, retry. LN
# 85 A connection could
not be made Call discriminating number is not
used. After checking a remote
number, retry. RU
# 86 A connection could
not be made Interrupt call has already been
disconnected. After checking a remote
number, retry. TN/ LN
# 88 Incompatible
destination Attribute of a terminal unit does not
match. After checking a remote
number, retry. LN
# 91 No available line for
use Format of a transit network is not
normal. After checking a remote
number, retry.
# 95 A connection could
not be made Report of other invalid messages.
# 96 Mandatory
information element
is missing
Required information element is in
short. Contact a retailer or a service
center. LU/ LN
# 97 A connection could
not be made Undefined or not-provided message
is received. Contact a retailer or a service
center. LU/ LN
# 98 A connection could
not be made Message mismatch. Contact a retailer or a service
center. LU/ LN
# 99 A connection could
not be made Information element is undefined. Contact a retailer or a service
center. LU/ LN
# 100 Invalid information
element contents The contents of informat ion element
is invalid. Contact a retailer or a service
center. LU/LN
# 101 Message not
compatible with call
state
Received message and a call status
mismatch. After checking a remote
number, retry. LU/LN
# 102 Recovery on timer
expiry Restoration due to an expiration of
timer. After checking a remote
number, retry. LU/LN