CPF112G Просмотр технического описания (PDF) - YCL Electronics

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CPF112G

Asymmetric Digital Subscriber Line

YCL Electronics  

Product Specification

CPF112G

1. Introduction:

The CPF112G is a splitter module that has been specifically designed to implement the

functionality of low pass filter in POTS over ADSL application.

Asymmetric Digital Subscriber Line ( ADSL ) technology is dedicated, point to point, public

network access technology that allow multiple forms of data, voice, and video to be carried

over twisted-pair copper wire on the local loop between a network service provider’s ( NSP’S )

central office and the customer site or on local loops created either intra-building or intra-

campus. Best of all, ADSL delivers this high speed performance over existing copper

telephone line all while allowing traditional voice service to coexist without interruption

through POTS low pass filters. The POTS splitter on the customer premises side consists of

a low pass section.

The CPF112G integrates low pass filters that block the high frequency energy reaching to

the POTS device and provide isolation from impedance effects of the POTS device on ADSL.

In addition, these filters will also attenuate any wideband impulse noise generated by the

POTS device due to the interruption of loop current. ( e.g. pulse dialing or on hook / off hook

transfer ) Because the POTS splitter 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 splitter to protect against line overstress which

could damage the splitter itself. The electrical and transmission specification is based on

ITU-T G.992.1 and customer’s requirements.

2. References:

Ref. 1 : ETS 300 001

Ref. 2 : ETSI 101 728

Ref. 3 : ITU-T K.21

Ref. 4 : ETSI 101 952-1-1 V1.1.1

Attachments to the Public Switched Telephone Network

( PSTN ); General technical requirements for equipment

connected to analogue subscriber interface in the PSTN.

Network and customer installation.

Resistibility of subscribers terminal to overvoltages and

overcurrents.

Specification of the low pass part of ADSL / POTS

splitters.

Data sheet subject to change without notice

RDPS-POTS433(R1)12/30/2002

SHEET 3 OF 10

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