D-Link DSL-24MF - POTS Filter Manual de usuario

DSL-24MF

ADSL Microfilter

ADSL devices such as ADSL modems and routers share a common telephone line with conventional analog telephone, fax

machines, answering machines and other analog telephony devices. It is necessary to install a low pass filter to block the

higher frequency channels used to deliver DSL services for every telephone or POTS (Plain Old Telephone Service) device

that shares the line with the ADSL equipment.

Various Protections Provided

For POTS voice band service, the low pass filter provides

protection from ADSL signals which may impact through

non-line or other effects remote devices (handset, fax,

voice band modem, etc.) and central office operation. For

ADSL signals, it also provides protection from high

frequency transients and impedance effects that occur

during POTS operation (ringing transient, on-hook, off-

hook transient and so on). Because the microfilter

connects directly on the subscriber loop media, it must

also provide some protection for externally induced line

hits or faults which could damage any attached equipment

or endanger human interacting with the installed

equipment. The circuit protection will be provided mostly

by standard central office line protection means and

additional protection measures built into POTS

filter to protect against line over-stress which could

damage the filter itself.

For ADSL G.lite System

For Use With POTS Device Only

Easy Installation

The DSL-24MF in-line ADSL microfilter is specifically

designed to implement the functionality of low pass filter in

G.lite system. G.lite technology is similar to full rate ADSL

that uses the DMT technology, but operates at a lower data

rate of up to 1.5Mbps downstream and 512Kbps upstream,

depending on line conditions and lengths.

The DSL-24MF in-line ADSL microfilter is intended for use

with POTS devices only. Do not install this filter between an

ADSL device and the phoneline wall socket.

The DSL-24MF in-line ADSL microfilter easily connects to

any telephone, G3 fax machine, answering machine and

other POTS devices through an RJ-11 phoneline connector.

The other RJ-11 connector on the DSL-24MF connects to a

wall socket. No configuration is needed.

RJ-11 Connector - Insert into wall socket

RJ-11 port - Attach to telephone cable

Technical Specifications

DSL-24MF

Rev. 01 (Mar. 2003)

Printed in Taiwan

RECYCLABLE

Specifications subject to change without prior notice.

D-Link is a registered trademark of D-Link Corporation/D-Link System Inc. All other

trademarks belong to their proprietors.

FAX: 1-905-8295095

Canada TEL: 1-905-8295033

Compliance

Environmental & Physical

- ETS300 001

Attachments to the PSTN; General technical requirements

for equipment connected to analogue subscriber interface

in the PSTN

- ANSI T1.413

Network and Customer Installation Interfaces

Asymmetric Digital Subscriber Line (ADSL)

Metallic Interface

- ITU-T G.992.1

Asymmetrical Digital Subscriber Line (ADSL)

Transceiver

- T1E1.4/2001-007R3

In-Line Filter Standard

- ITU-TK.21

Resistibility of Telecommunication

Equipment Installed in Customer Premises to

Overvoltages and Overcurrents

- ITU-T K.44

Resistibility of Telecommunication

Equipment to Over Voltage and Over Currents, Basic

Recommendation

Operational Temperature

-5 to 60 degrees C

Storage Temperature

-15 to 80 degrees C

Operational Humidity

10% to 90% RH

ESD Discharge Limits Non Damaging

15 KVdc

Specifications

Schematic

Parameter

Condition

Min.

Typ.

Max

Unit

ADSL band

characteristic

40KHz~1104

KHz

Longitudinal

Balance

200Hz ~1KHz

1KHz~3KHz

Insertion loss

@1004Hz

-0.3

Cut off fr eq

@10KHz

Attenuation

200 to 3.4kHz

0.5

3.4kHz~ 4kHz

0.75

Return loss

SRL-L

Group delay

@0.2-4.0KHz

100

CMRR

@0.6-3.2KHz

-100

DC resistance

PHONE

LINE

ADSL Microfilter

Ordering Information

DSL-24MF In-line ADSL Microfilter

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