Panasonic KX-TD500, Руководство по установке

Страница: 307 / 316

Troubleshooting
Installation Manual 307
(23) Digital trunk failure (out of synchronization)
Error Code 1318 xyy: Digital trunk out of sync
x = 1 to 3: Shelf number
yy = 01 to 14: Slot number
Possible cause of
the malfunction 1.
T1/PRI23 card (physical number xyy) lost the synchronization with
the clock time sent from the Central Office.
Countermeasures
Note Another T1/PRI23 card with next priority will work as a master card, if
more than two T1/PRI23 cards are registered to the system by PC
programming (TSW card configuration) beforehand. Otherwise, the
system will synchronize with the system internal clock.
Ask the T1/PRI23 carrier to check the line conditions.
Or check the equipment in other switching system
which your T1/PRI23 lines are connected with.
Check the CSU. If not good, replace it with a new one.
End
OK
OK
OK
NG
NG
Test Results NG Test Results OK
NG
OK
Replace the T1/PRI23
card with a new one.
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/PRI23 and CSU"
and "CSU and NIU." If not properly cabled, change
the cabling.
Execute Loop Back Test (Internal).
Execute Loop Back Test (External : between KX-
TD500 and CSU).
NG