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Page 6 of 66
DTI installation
Figure 1
QPC472 DTI faceplate layout
Q
P
C
4
FLR
7
2
ACT
J1
R ALM
Y ALM
LP BK
J2
J3
553-2811-200 Standard 6.0 December 1994
Failure
alarm
Line
active
Red
alarm
Yellow
alarm
Loopback
test
J4
To Echo
Canceller port
J5
J3 Half group - no connection
To T1
trunk
PRI or NT8D79xx to QPC720 PRI
J1
secondary reference
J2 PRI or NT8D79xx to QPC720 PRI
primary reference
N/NT single group QCAD125 or NT8D75xx
to QPC471 Clock Controller
XN/XT QCAD110 or NT8D74xx to QPC417
553-1330
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