Panasonic KX-T336200 Installation Instructions Manual page 257

3.01 Loopback Test (LBT) -for T-l
Description
Used to verify the validity of the T-l DIGITAL TRUNK cards and line connections.
Before performing Loopback
Command Format
(1) OPE>LBT + Item1 + Item2 -I
(2) OPE>LBT + Item1 + Item2 + Item3 7
l
l.Loopback test is completed automatically inside the T-l DIGITAL TRUNK
. .
DSU). In this case, loopbxk mode should be set at the external terminal beforehand.
the test.
Results Display
Error Indication
Voice error
Test, set the card status to 'OUS".
Item1
1 or2
1: Internal
2: External
test is completed between the T-l DIGITAL TRUNK card and the external equipment (CSU,
OK Normal
I
Speech path failure
I
Control signal path failure
Item2
101 ,105,109,201,205,
(Card No.)+~
(DTMF Generator No.)
xxx : Card No.
Description
15-E-5-1
Item3
None
(DTMF Receiver No.)
xxx: Card No.
yy :Ol to24
I
I