User's Manual

18 UltraWAVE BTS Installation and Commissioning Guide, Release 6.5A
2-3 Configuring the E1 or T1 Trunk Card
This section describes how to configure E1 or T1 trunk cards.
These procedures designed for E1 or T1 cards that are shipped pre-configured in a system. To
configure E1 or T1 cards that are shipped as configured or unconfigured replacements, see Appendix 1.
Your system is shipped from the manufacturer configured with the correct cards for your site-specific
application. These can be 100 Ohm T1, 75 Ohm E1, or 120 Ohm E1. All cards are shipped with the
appropriate connectors.
Table 2-5 lists the cards and the procedures that apply to each card type.
2-3.1 Configure Ground Jumpers on 75 Ohm E1 Cards
Two types of dual port 75-Ohm E1 cards exist. They are differentiated only by their connector types—
either BNC or RJ-45 — on the front panel of the card.
1 Open the front cabinet door and locate the 75 Ohm E1 card in the baseband subrack
assembly.
2 Identify your E1 card and proceed to the appropriate subsection. For RJ-45 cards, continue
with the procedure below. For BNC cards, proceed to “BNC Connector Cards” on page 22.
Cable runs of greater than 600 meters (1968 feet) are not supported
directly from the card. If you are attempting a longer cable run between
interWAVE chassis please contact Customer Service to determine if you
need a repeater for your application.
Table 2-5 Trunk Cards and Procedures
Label Description Operation
75 Ohm 75 Ohm E1 board
Set the ground to the Transmit or Receive side
using the jumpers. See Section 2-3.1
120 Ohm 120 Ohm E1 Board No configuration is required
100 Ohm 100 Ohm T1 Board
Configure the DIP switch based on cable length
to the DSX-1 demarcation point. See
Section 2-3.2.
NOTE: No configuration is required unless
connecting to a DSX1 demarcation point greater
than 133 ft.