Cable Requirements - Nortel Communication Server 1000S Installation And Configuration Manual

Page 130 of 394

Cable requirements

553-3001-201 Standard 2.00
NT8D72 and QPC720 PRI card installation
Note 1: Due to physical width, Bus Terminating Units (BTUs) and PRIs
cannot fit next to each other on a shelf.
Note 2: This chapter includes instructions for installing an additional
network shelf on a system (when no vacant Network slots are available
to install PRI packs, additional network shelves can replace Intelligent
Peripheral Equipment shelves located on the rear of the Common
Equipment or Disk shelves). Refer to "Install an additional network
shelf" on page
Shielded 22 AWG (0.644 mm) cables are recommended for connecting the
PRI to the cross-connect point. This cable consists of two twisted-pair
conductors.
The transmit and the receive pairs must be enclosed in a polyvinyl jacket.
This type of cable is commonly referred to as "6-conductor" cable. The cable
should be grounded at the cross-connect point.
In addition to twisted-pair conductors, 75-ohm coaxial cable can also be used
to provide connection to the office repeater or line terminating unit (LTU).
For manufacture cables of lengths different than those of the standard cables
provided, see "Non-standard cables" on
For the 2.0 Mb NT8D72 PRI card, see Figure 41 on
page 132, Figure 43 on
and Single Group cabling arrangements applying to the system; also, refer to
Table 52 on page 142. For the 2.0 NT8D72 on a Multi Group arrangement,
see Figures 45 and 46 on
For the 1.5 Mb QPC720 PRI card on Half Group and Single Group systems,
see Figure 47 on page
also, refer to Table 31 on
see Figures 51 and 52 on
September 2004
155.
page 133, and Figure 44 on
page 135; also refer to Table 30 on
137, Figure 48 on
page 145. For the QPC720 on Multi Group systems,
page 141; also refer to Table 32 on
page 383 of this practice.
page 131, Figure 42 on
page 131
page 138, Figure 49 on
for Half Group
page 144.
page 139,
page 147.