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Page 10 of 66
DTI installation
Cable requirements
Table 6
DTI cables and cable lengths
Cable type
From
QCAD130
QPC472
NT8D79xx
QPC720
QCAD130
QPC472
NT8D79xx
QPC720
QCAD124
QPC472
NT8D85xx
QPC720
QCAD128
QPC472
NT8D83xx
QPC720
RS-232
QPC472
NT8D89Ax
QPC720
22AWG
Echo Canceller
NT8D97xx
I/O panel
553-2811-200 Standard 6.0 December 1994
Shielded 22 AWG (0.644 mm) cable is recommended for connecting the DTI
to the cross-connect point (or a CPI to CPI connection). This cable consists
of two shielded twisted-pair conductors and two shields.
The transmit and receive pairs must be individually shielded and enclosed in
a polyvinyl jacket. This type of cable is commonly referred to as
"6-conductor" cable. T1 cable shielding should be grounded at the
cross-connect point.
To install a private T1 transmission cable, consult the Northern Telecom
Transmission Division. To manufacture cables of different lengths than the
standard cables provided, see
of cable used and the lengths required for internal and external DTI
connections.
To
QPC471
QPC775
(CC-0)
QPC471
QPC775
(CC-1)
QPC414
Network
Bulkhead
I/O panels
Echo Canceller
DSX-1
T1 I/O
"Wire list" on page
57.
Maximum
length (feet)
10
10
45
25
50
655
50
Table 6
lists the types
Maximum
length (meters)
3.04
3.04
13.71
7.62
15.25
199.64
15.25
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