Toshiba Strata AirLink DK40i, Installation And Maintenance Manual

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ISDN Interfaces
ISDN Disconnect Cause Code
16-50
Strata DK I&M 6/00
In case a valid cause value cannot be found when the line is disconnected, “NA (which stand
for Not Available)” displays. (See
Tables 16-19 ~ 16-24 for valid cause code descriptions.)
Notes
●
On/Off of cause display function is set by programming each terminal (Program 35, LED 08).
This setting is only valid for ISDN lines (PRI, BRI (S/T) in TE mode, and BRI (U) in LT
mode). Loop start and ground start trunk call termination data displays just like the ISDN
line— the display format is the same as when cause display function is switched Off. (For
Loop start trunks, use Program 15-0, 3.)
●
In case of analog Tie and DID lines, the display information remains the same as before.
●
Even if soft keys are switched On, information on call termination displays instead of the soft
key's On status. However, the function of the soft key itself remains valid. For example, even
when the soft key's On status is not displayed, ABR registration can be enabled by pressing
[MODE] key on the terminal corresponding to the soft key's ABR position.
●
The cause display remains until some kind of operation (such as going on-hook, making a call,
receiving a call, etc.) changes the display. This is to prevent the display from being changed
until the System Administrator reads the information on call termination when the line is
disconnected in an unusual way. At this time, the busy tone that starts when the line is
disconnected will also continue generating.
Call Termination Examples
CALL TERMINATED
CR=8004 DK=NA
This is an example of the call being terminated because layer 2
stopped operating during the call. The call has be started by DK’s
reception through a PRI line.
CALL TERMINATED
CR=NA DK=NA
This example shows when the DK side fails to actuate layer 2 through
PRI or BRI line when layer 2 stops operating. This is the only case
then “NA” is used for the call reference number.
CALL TERMINATED
CR=0005 CO=11
This example shows a call being terminated due to signal loss that
occurred during the call. The call has been started by the DK’s
transmission through a PRI line.
CALL TERMINATED
CR=8001 DK=11
This example shows a line disconnected due to 11H , “User busy,”
from the network side when the call from the DK side is made through
the PRI line. If ABR registration is enabled and the soft key is switched
On, the functions are valid even through they do not display on the
soft key.
CALL TERMINATED
CR=0002 DK=51
This example shows the line being disconnected by 51H, “Invalid call
reference value,” from the DK side after the system detects something
abnormal during the call. This call started from the DK through the PRI
line.
CALL TERMINATED
CR=0003 DK=NA
This example shows the call being terminated because there was no
response from the network side to the SETUP signal transmission
from the DK side through the PRI line.