DTI installation Page 25 of 66
DTI/CPI
Installation and data administration
Figure 10
XN/XT and 71 cabling arrangement
QCAD130 to PRI or NT8D79xx
to QPC720 PRI
(Secondary Reference)
553-1337
QCAD130
to PRI or
NT8D79xx
J1
QPC720 PRI
(Primary Reference)
Network
Card
J6
RS232
J4
T1
J3
LOOP
REF1
QCAD128
or
QCAD133
or
NT8D83xx
22 AWG ABAM
Cabinet
I/O Panel
Cabinet
I/O Panel
QCAD133
or
NT8D97Ax
QCAD129
or
NT9J93xx
RS232 or
NT8D89Ax
T1
LD-1
Note 2
Central
Office
J2
REF2
QCAD124 or
NT8D85xx
DS-1
Cross-Connect
J5
(Connector J5 is not used in the DTI application)
T1 interface to
external digital
carrier
AAAA
A
A
A
AAAAAAA
Echo Canceller
RS232
Note 1
T1
AA
AA
AA
AA
AA
AAAA
A
A
A
AAAAAA
QPC471
Clock
Controller
1
J3
J1
J2
QPC471
Clock
Controller
0
J3
J1
J2
QCAD125
or NT8D75xx
QCAD110
or
NT8D74xx
QCAD110
or
NT8D74xx
SCG0
SCG1
QPC417
Junctor
Note 1: Maximum cable distance from DTI circuit packs to DS-1 cross-connect is 655 ft.
Note 2: Maximum cable distance from DTI circuit packs to LD-1 is 750 ft.
Note 3: Connections below the dotted line are used only with an Echo Canceller.
Note 4: QPC720 does not interface with NT8D04 Superloop Network Card.
Note 4
QCAD130
to PRI or
NT8D79xx
Note 3
