September 25, 2006

Chapter 1: Overview

Name

Mode

Function

Reset switch

 

Resets the EMU-830 hardware.

 

 

 

V.24 (RS-232) console

 

Provides access to EMU console menus either by local terminal

port

 

connected to console port via serial cable or by remote terminal

 

 

connected to console port via modems. Also supports

 

 

autonomous dial-out reporting of alarms to management station.

 

 

 

a. It is normal for the Fail LED to illuminate briefly when power is applied to the EMU-830.

MAJOR COMPONENTS

Major components of the EMU-830 management unit include:

68302 processor

2 MB Flash RAM program memory

Ethernet 10BASE-T port

Asynchronous Serial Line Internet Protocol (SLIP) port (RS-232/RS-485)

Front panel V.24 (RS-232) console port

Audible and visual relays for critical, major, and minor alarms

Backup timing circuit for external shelf clock (EMU-830 List 6A only)

The EMU-830 Flash RAM program memory permits firmware upgrades through TFTP or Xmodem downloads (see “BOOTP and TFTP Protocols” on page 1-9and “Xmodem Protocol” on page 1-9).

Note: A total or partial failure of the EMU-830 affects only the centralized management capabilities of the system, it does not affect the DSL circuits deployed in the shelf. In case of EMU-830 failure, the HDSL cards can be managed directly from their front panel V.24 Craft port. To use the local management RS-232 interface of an HDSL card it is necessary to remove the EMU-830 from the shelf. To manage a G.SHDSL card using an RS-232 interface, it is not required to remove the EMU-830 from the shelf.

MULTISHELF TAO

Multishelf TAO is supported through the EMU-830 front panel V.24 console port and provides an asynchronous, maintenance terminal, auto-baud interface where you can:

Monitor all shelf and DSL circuit alarms through a single common screen

Communicate to a selected shelf and DSL card using the standard line unit console menus

Set up network configuration parameters and SNMP parameters

Configure the common equipment and shelf-wide alarms

Figure 1-2 on page 1-4illustrates local management of a single shelf using TAO. The shelf communicates with the local terminal (or PC) through the EMU-830 V.24 console port. Figure 1-3 on page 1-4illustrates remote management of multiple shelves at two sites using Multishelf TAO. Up to 32 shelves at each site are connected over a LAN. The IP address and subnet mask are configured to place all shelves at one site on the same subnet. Each multishelf network communicates with the common network management station over the dial-up Public Switched Telephone Network (PSTN).

Multishelf TAO is also supported using Telnet to 10BaseT port of an EMU-830.

LTPE-UM-3159-02

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ADC EMU-830 user manual Major Components, Multishelf TAO, September 25 Overview