Panasonic KX-TD500 Installation Manual page 224

Utility
Item
Card
Mode
Result
Details
Error Message
Speech path
failure
Control signal
path failure
Loop Back Test
failure
ISDN interface
LSI failure
Note
• Execute the Loop Back Test (External) in one of the following ways:
— Set the DIP Switch on the T1 card to "TEST" position.
— Execute Loop Back Test between KX-TD500 and CSU.
— Execute Loop Back Test between KX-TD500 and T1/PRI carrier.
224
[Card/Port Test] Loop Back Test - Description
Display/Input Value
Card No.: Type
Internal
External
OK
NG
See "Error Indication
Table."
[Card/Port Test] Loop Back Test - Error Indication Table
Speech path is abnormal.
Control signal path is abnormal.
Speech path is abnormal.
ISDN interface LSI is not functioning properly.
Description
The card number and the type of the target
card to be diagnosed. (The card specified in
"Card Information" screen is displayed
automatically.)
Used to specify "Internal Loop Back" or
"External Loop Back." (T1/PRI23 card
only)
The results of diagnosis.
The details of an error.
Displayed only when Result is NG (no
good).
Description Card
Applied
T1
T1
BRI, PRI23
BRI, PRI23
Installation Manual