User Manual

ADCP-75-159 • Issue 1 • August 2003 • Section 1: Overview
Page 1-6
© 2003, ADC Telecommunications, Inc.
At the NOC, control and monitoring of the networked Digivance systems are effected through a
Network Element Manager (NEM) interface which requires only a VT100 terminal/emulator
for operation. The NEM interface language consists of simple ASCII text strings. All
communications are input as either SET or GET commands which result in ASCII text string
responses from the specified system or systems. The EMS desktop computer may also be used
locally to manage the networked Digivance systems. Local operation is through the EMS
software GUI.
Figure 1-5. Remote NOC Interface
3 SYSTEM FUNCTIONS AND FEATURES
This section describes various system level functions and features of the Digivance System.
3.1 Fiber Optic Transport
In a typical Digivance 20 Watt system with a single HU and RU, the HU is connected to the RU
over a pair of single-mode optical fibers. One fiber is used to transport the forward path optical
signal. The other fiber is used to transport the reverse path optical signal. Because the optical
DESKTOP COMPUTER WITH EMS
(LOCAL AND REMOTE INTERFACE)
HOST UNIT
HOST UNIT
HOST UNIT
NETWORK
OPERATIONS
CENTER
(REMOTE
INTERFACE)
T1 OR
OTHER
MEDIUM
CONTROLLER
AREA
NETWORK
CONTROLLER
AREA
NETWORK
RS-232 ASCII
RS-232
18525-A
CD-ROM WITH DIGVANCE
ELEMENT MANAGEMENT
SYSTEM (EMS) SOFTWARE
REMOTE
UNIT
REMOTE
UNIT
REMOTE
UNIT