MF612A データシートの表示（PDF） - YCL Electronics

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MF612A

Asymmetric Digital Subscriber Line

YCL Electronics  

Product Specification

MF612A

1. Introduction:

The In-Line Microfilter has been specifically designed to implement the functionality of low

pass filter in G.lite system. G.lite technology is similar to full rate ADSL in using DMT

technology but operates at a lower data rate of up to 1.5 Mbps downstream and 512 kbps

upstream, depending on line conditions and lengths.

For POTS voice band service, the low pass filter provide protection from ADSL signal which

may impact through non-line or other effects remote devices ( handset, fax, voice band

modem etc. ) and central office operation. For ADSL signal, it also provide protection from the

high frequency transients and impedance effect that occur during POTS operation ( ringing

transients, on-hook, off-hook transients and so on ). Because the Microfilter connects directly

to 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 humans 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 overstress which could damage the filter itself.

2. Reference:

Ref. 1 : ETS 300 001

Attachments to the Public Switched Telephone Network

(PSTN); General technical requirements for equipment

Ref. 2 : ANSI T1.413

connected to analogue subscriber interface in the PSTN.

Network and Customer Installation Interfaces－

Asymmetric Digital Subscriber Line (ADSL) Metallic

Interface

Ref. 3 : ITU-T G.992.1

Asymmetrical Digital Subscriber Line (ADSL) Transceiver

Ref. 4 : T1E1.4/2001-007R3 In-Line Filter Standard

Ref. 5 : ITU-T K.21

Resistibility of Telecommunication Equipment Installed

in Customer Premises to Overvoltages and Overcurrents

Ref. 6 : ITU-T K.44

Resistibility tests for telecommunication equipment exposed

to overvoltages and overcurrents－Basic Recommendation

Data sheet subject to change without notice

RDPS-MF039(R0)02/22/2002

SHEET 3 OF 13

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