Specifications

6-12 Reference Guide
Model No.
Running Head
WAN Card Descriptions WAN Card
For 75-ohm unbalanced E1, set the adapter panel jumpers to UNBAL
in one location only
,
and set them to BAL in all other cases. When multiple DSX/CEPT modules with jumpers are
installed, the unbalanced jumper should be set on the module closest to the E1 line.
When the adapter panel is present, it is considered the unit closest to the E1 line. The
corresponding jumpers on the rear of the panel are set to UNBAL while all other module
jumpers are set to BAL.
6.2.7 CSU Module Description (812)
The CSU module is required for Channel Service Unit (CSU) operation on a T1 line. This
module mounts on the WAN SINGLE, WAN DUAL, and WAN-R cards, as shown in Figure
6-1.
6.2.7.1 Module Installation
Install the CSU module on the associated WAN card by plugging its connector pins into the
mating sockets of the WAN card, as shown in Figure 6-1. For a WAN DUAL or WAN-R card,
you can install two modules.
6.2.7.2 Module Jumper/Switch Settings
The CSU module does not have any jumpers or switches.
6.2.8 HDSL Module Description (820)
The HDSL module is required for 2.048Mbps operation using HDSL. It can be used only on
the WAN-U card.
6.2.8.1 Module Installation
Install the HDSL module on the WAN-U card by plugging its connector pins into the mating
sockets of that card, in a fashion similar to that shown in Figure 6-1. You can install up to two
HDSL modules on the WAN-U card.
6.2.8.2 Module Jumper/Switch Settings
The HDSL module does not have any jumpers or switches.