Chapter 1: Connections and Setup

Cable Modem Overview

Front Panel

The following illustration shows the front panel of the EMTA machine:

The LEDs on the front panel are described in the table below (from left to right):

THG540

Tel 2

Tel 1

Message

Cable

Cable

PC

 

Internet

Description

Activity

Link

Link

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Tuning

 

X

X

OFF

OFF

OFF

OFF

 

FLASH

 

 

(Searching downstream signal)

 

 

 

 

 

 

 

 

 

Ranging - Awaiting Response

 

X

X

OFF

OFF

OFF

FLASH

 

FLASH

 

 

(DS carrier acquire, ranging in process but

 

 

 

 

 

 

 

 

 

RNG-RSP has not been detected)

 

 

 

 

 

 

 

 

 

Any RNG-RSP detected

 

X

X

OFF

OFF

OFF

FLASH

 

FLASH

 

 

(Normalizing power level and timing offset)

Start-up

 

 

 

 

 

 

 

 

Connecting

X

X

OFF

OFF

FLASH

FLASH

 

FLASH

Operation

 

 

 

 

 

 

 

 

 

 

(Ranging complete, DHCP in progress)

 

 

 

 

 

 

 

 

 

Configuring

 

 

 

 

 

 

 

 

 

 

X

X

OFF

FLASH

FLASH

FLASH

 

FLASH

(DHCP complete, configuration file download

 

 

 

 

 

 

 

 

 

in process)

 

X

X

FLASH

FLASH

FLASH

FLASH

 

FLASH

Registering and Baseline Privacy Initializing

 

 

(configuration file download complete, initialize

 

 

 

 

 

 

 

 

 

BPI if BPI is ON, registration in process)

 

 

 

 

 

 

 

 

 

 

 

X

X

Enter Normal Operation Mode

 

Registration complete

 

 

 

 

 

 

 

 

 

 

 

X

X

X

X

X

X

 

OFF

Internet ON-OFF switch off

 

 

ON

Internet ON-OFF switch on

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X

X

X

X

X

OFF

 

X

NO Ethernet/USB carrier present

 

FLASH

 

Ethernet/USB TX/RX traffic

 

 

 

 

 

 

ON

 

 

Ethernet/USB carrier present, no traffic

 

 

 

 

 

 

 

 

 

NO Cable Link

 

 

 

 

 

OFF

 

 

 

 

 

 

 

 

 

 

 

Cable BSS/OSS has set the CM into

Normal

X

X

X

X

FLASH

X

 

X

 

de-activated state

 

 

 

 

ON

 

 

 

Operation

 

 

 

 

 

 

 

CM is registered

 

 

 

 

 

 

 

 

 

 

 

 

OFF

 

 

 

 

Internet ON-OFF switch off/No RF DS/US

 

X

X

X

X

X

 

X

network traffic

 

FLASH

 

 

 

 

 

 

 

 

 

RF DS/US network traffic

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No message is delivered by the MSO

 

 

 

OFF

 

 

 

 

 

Email/Voice Mail is available for the user on

 

X

X

X

X

X

 

X

the server

 

FLASH

 

 

 

 

 

 

 

 

 

(Implementation of the message waiting LED

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

will be via Proprietary MIB)

No service

X

X

X

X

Wink

X

 

X

NACO =OFF

Operation

 

Three seconds ON followed by a flash OFF

 

BPI unauthorized (when BPI is ON)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3Illustrations contained in this document are for representation only.

Page 8
Image 8
RCA THG540 user manual Cable Modem Overview Front Panel