Specifications

Reference Guide
7-15
WAN Card WAN Module Descriptions
7.3.2 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
7-3. All WAN cards equipped with CSU modules also act as the "remote terminal" termination
points for the Subscriber Loop Carrier (SLC-96) facilities defined in Bellcore publication
TR-TSY-000008, Issue 2, August 1987.
7.3.2.1 CSU 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 7-3. For a WAN DUAL or WAN-R card,
you can install two modules.
7.3.2.2 CSU Module Jumper/Switch Settings
The CSU module doesn’t have any jumpers or switches.
7.3.3 Adtran E1/HDSL Module Description (820)
The Adtran E1/HDSL (High-bit-rate Digital Subscriber Line) provides transport for E1 rate
(2.048 Mbps) or SDH rate (2.304 Mbps) data over copper exchange cable without circuit
conditioning or mid-span repeaters. The Adtran E1/HDSL module can be used in integrated
access systems to allow transport of E1 based services such as point-to-point leased lines and
ISDN Primary Rate Access. This module can only be used on the WAN-U card (8011).
7.3.3.1 Adtran E1/HDSL Module Installation
Install the Adtran E1/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 7-3. You can install
up to two Adtran E1/HDSL modules on the WAN-U card.
7.3.3.2 Adtran E1/HDSL Module Jumper/Switch Settings
The Adtran E1/HDSL module doesn’t have any jumpers or switches.