Panasonic KX-TD500 Installation Manual page 295

(26) Digital trunk failure (frame trouble)
Error Code
Possible cause of
the malfunction
Countermeasures
Note
Troubleshooting
1323 xyy: Digital trunk frame failure
x = 1 to 3 : Shelf number
yy = 01 to 14 : Slot number
On booting-up of T1, E1, BRI or PRI30 card (physical number xyy), it
failed to synchronize with the clock time sent from the Central Office.
Confirm that the setting of "Frame Sequence" and
"Line Coding" are matched with that of the leased
lines. If not, change the setting of your KX-TD500 and
CSU. Then check the clock mode.
Check the cabling between "T1, E1, BRI or PRI30 and
CSU" and "CSU and NIU". If not properly cabled,
change the cabling.
Execute Loop Back Test (Internal).
Test Results NG
Replace the T1, E1, BRI or PRI30
card with a new one.
Execute Loop Back Test (External : between KX-
TD500 and CSU).
OK
Check the CSU. If not good, replace it with a new one.
Ask the T1, E1, BRI or PRI30 carrier to check the line
conditions. Or check the equipment in other switching
system which your T1, E1, BRI or PRI30 lines are
connected with.
Another T1, E1, BRI or PRI30 card with next priority will work as a
master card, if more than two T1, E1, BRI or PRI30 cards were
registered to the system by PC programming (TSW card configuration)
beforehand. Otherwise, the system will synchronize with the system
internal clock.
5.2 Troubleshooting Guide
NG
NG
Test Results OK
NG
NG
OK
OK
OK
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