DTI installation
Page 21 of 66
DTI/CPI
Installation and data administration
Figure 8
N/NT, 51, RT, and 61 single and half group cabling arrangement
QCAD130 to PRI or NT8D79xx
to QPC720 PRI
(Secondary Reference)
QPC471
Clock
Controller
1
J3
J1
J2
QPC471
Clock
Controller
0
J3
J1
J2
QCAD130 to PRI
or NT8D79xx
QCAD125 or
NT8D75xx
J1
QPC720 PRI
(Primary Reference)
Network
Card
J6
RS232
J4
T1
J3
LOOP
REF1
QCAD130 to PRI
or NT8D79xx
QCAD128
or
QCAD133
or
NT8D83xx
22 AWG ABAM
Cabinet
I/O Panel
Cabinet
I/O Panel
QCAD133
to PRI or
NT8D79xx
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
AAAAA
Echo Canceller
RS232
Note 1
T1
A
A
A
AAAA
A
A
AAAAA
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.
553-1336
Note 3
