Panasonic KX-TD500 System Reference Manual page 1518

5.00 Port Test Results Display
;OPE>TST 2 10101<CR>
; 10101 ****** PASS
;OPE>TST 2 20103<CR>
; 20103 ****** NO CARD
;OPE>TST 2 10101&10201<CR>
; 10101
; 10201
;OPE>
;
Port Test Error Code List
Code Description
FAULT01 Loop current failure
FAULT02 Bell detection failure
PB Generator failure
FAULT03
FAULT04 Dial pulse failure
PB Receiver 1 failure
FAULT05
PB Receiver 2 failure
FAULT06
FAULT07 Tone detection circuit 1 failure
FAULT08 Tone detection circuit 2 failure
FAULT09 HDLC failure
FAULT0A OHCA card is not installed
FAULT0B Pulse detection failure
FAULT0C Speech path failure
PB Receiver 3 failure
FAULT0D
PB Receiver 4 failure
FAULT0E
FAULT0F
****** PASS
****** FAULT05
Port
test
Pair
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16-E-10