As the deployment of ADSL2+ services is ramping up it is appropriate to review the micro filter requirements in order to ensure successful separation of voice and data streams sharing the same telephone line.

Micro filter compliance standards for ADSL1 services were initially simple and as a direct result micro filter performance issues were often encountered in the early stages of ADSL1 deployment. Compliance standards have evolved considerably since then and in order to satisfy these ACA requirements as well as Telstra’s own specified requirements, micro filter designs have become much more sophisticated.

New ADSL2+ services (up to 24Mbps) involve a much greater bandwidth that ADSL1 (up to 8Mbps) and older style ADSL1 micro filters were simply not designed to function correctly over the entire ADSL2+ bandwidth. Whilst ADSL1 micro filters may work adequately in certain conditions with ADSL2+ services, they are certainly not guaranteed to work over the complete ADSL2+ bandwidth and this leaves users susceptible to noise on their line which may affect both voice and data streams.

BEST Telecom recommends that only ADSL2+ micro filters are deployed with ADSL2+ services. This will help to maintain high levels of customer satisfaction and reduce the chance of micro filter performance causing problems for customers leading to increased support calls.

The EM1550 is an ADSL2+ splitter/micro filter that fully complies with all relevant ACA requirements, including AS/ACIF S041:2005 (ADSL2+), and also conforms to Telstra’s RCIT.0004 specification. Performance analysis shows that the EM1550 exhibits superior frequency domain characteristics when compared to previous micro filter models. The EM1550 will therefore deliver better filtering performance to end users with ADSL2+ to ensure little or no disruption to voice and data services.

EM1100 Inline Filter	EM1103 Inline Filter (Triple pack of EM1100 )	EM1120 ADSL Splitter-Filter
EM1180 ADSL POTS splitter	EM1550 ADSL in-line Splitter/Filter with RCIT.0004 approval	EM1790

RRP (incl GST)$

EM1103 Inline Filter (Triple pack of EM1100 )	Downloads
The EM1103 is an inline filter. This filter is designed to work with ADSL1 services of up to 8Mbps.	Specification Sheet User Guide Quick Start Guide Utilities Reference Guide IP View Pro Software At Command Set MAC Guide Support

RRP (incl GST)$ 32.00

EM1180 ADSL POTS splitter	Downloads
The EM1180 ADSL POTS Splitter allows you to use one telephone line forboth Voice and ADSL services. Designed to be mounted on your incomingline, EM1180 minimises Voice Band Interference and eliminates the needfor additional micro filters on each analogue phone device such asphone extensions, fax machines and telephone answering machines.	Specification Sheet User Guide Quick Start Guide Utilities Reference Guide IP View Pro Software At Command Set MAC Guide Support

RRP (incl GST)$ 25.30

EM1550 ADSL in-line Splitter/Filter with RCIT.0004 approval

Downloads

Most broadband subscribers commonly share their ADSL broadband service and phone equipment over one telephone line. The higher frequencies used with ADSL can interfere with the operation of your telephones, fax and answering machines. A NetComm ADSL Splitter-Filter splits your telephone line into two connection points - one for your ADSL modem and the other for telephone equipment. The embedded micro filter ensures that ADSL frequencies do not interfere with the normal operation of your telephone devices. The EM1550 High Performance filter is designed to isolate all voice band equipment. The EM1550 is RCIT.0004 Telstra Approved and supports speeds of ADSL (up to 8Mbps) and ADSL2+ (up to 24Mbps).

Specification Sheet User Guide Quick Start Guide Utilities Reference Guide IP View Pro Software At Command Set MAC Guide Support