Panasonic KX-TD500 System Reference Manual page 1471

5.00 Testing PITS and ATT
5.01 Functions to be Verified
This test verifies the status of a PITS or an Attendant Console (ATT) for the
functions listed below.
Card to be verified
PLC Link (All types of APITS)
HLC DTMF generator (KX-T123235 and
DLC Link (All types of DPITS)
DTMF generator (All types of DPITS)
DHLC Link (All types of APITS/DPITS)
DTMF generator (KX-T123235, KX-
T7130 and All types of DPITS)
ATLC Link
DTMF generator
ROM
RAM
(Note)
You cannot test the ATT port which is used as the maintenance device.
Function
Card to be tested should be
"OUS" or "FAULT".
KX-T7130 only)
15-F-11
Remarks