NEC Univerge sv8500 Manual page 2597

7. DRU/DAU
7.1 Introduction
7.1.1 General
This manual explains the functions, installation procedure, and maintenance of the Digital Remote Unit (DRU)/
Distributed Access Unit (DAU).
The following names are used in this manual:
Note:
• Digital Remote Unit (DRU) for North America
• Distributed Access Unit (DAU) for Australia, Asia, Latin America, Middle East, and Russia
7.1.2 Related Reference Manuals
This section describes only items related to the DRU/DAU. For detailed explanations on the Telephony
Server as a whole, maintenance procedures, and installing various kinds of terminal equipment, refer to the
following manuals.
MANUAL
UNIVERGE SV8500
Installation Manual
UNIVERGE SV8500
Operations and Maintenance
Manual
UNIVERGE SV8500
Circuit Card Description
Related Reference Manuals
This Manual explains the procedures for the following operations.
• The installation procedure of the system equipment including the Module Group,
PCPro, Attendant Console, terminal equipment, etc.
• The procedure for starting up the system by turning on the operating power.
• The testing procedures used to verify that each system feature operates according
to the assigned office data.
This Manual explains the system administrative functions and control methods, etc. re-
quired for normal system operation. The procedures to be used to maintain the normal
operating state of the system, and the remedial actions to be taken or the operating pro-
cedures used when a malfunction occurs within the system.
This Manual explains the functional outline, mounting locations, lamp indications,
switch setting and external interface of the circuit cards used in the system.
VOL.3-110
CHAPTER 2 TERMINAL-RELATED DEVICES
DESCRIPTION