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Allied Telesis

www.alliedtelesis.com

Datasheet | 

integrated Multiservice Access Platform

PAC24

AT-TN123-B 24 Port POTS and ADSL2+ Combo Service Module

Allied Telesis’ iMAP family of integrated
Multiservice Access Platforms

Allied Telesis

www.alliedtelesis.com

Eliminate Externals Splitters 
with a Combined POTS and
ADSL2+ Service Module

Allied Telesis has combined industry leading
ADSL2+ technology,VoIP based POTS
interfaces and optimized Splitters to deliver the
PAC24 combo service module. The PAC24
eliminates external wiring required to connect
POTS and ADSL2+ circuits on traditional DLC
or legacy DSLAM platforms. Utilizing the same
optimized wiring and board layout techniques
used in the ADSL24 LIFs, the PAC24 is a cost
effective means to deliver Triple Play services
that rely on baseband POTS in the last mile.

Each of the 24 subscriber ports simultaneously
supports basedband POTS and any of the
standard ADSL modes - ADSL2+, G.DMT,
S=1/2, or T1.413 - on a per port basis. A
powerful DSP implements all ADSL algorithms
and allows future and emerging ADSL2+
features to be added through simple software
upgrades. Though the combined services
appear as a single port on the physical
connection to the PAC24 line card, each service
is individually managed. This ensures services
are enabled on an on-demand basis though
remote management - including through the
comprehensive AlliedView NMS.

The PAC24 not only eliminates the cost and
wiring associated with external splitters, it also
optimizes Rate vs Reach performance. The
integrated splitters eliminate a significant source
of ADSL2+ interference thereby ensuring CSA
designs reach as far into the OSP as possible.

Transitioning to a Ubiquitous
Broadband Network

Combining the PAC24 with other iMAP
linecards, Service Providers of all types can
migrate to a ubiquitous broadband network in 
a pay-as-you-go fashion. As broadband take 

rates continue to increase, the PAC24 is well
poised to enable either a gradual or immediate
transition to the IP future.

The PAC24 delivers a rich suite of traditional
POTS services including:

Loop start

DTMF and dial pulse detection

CLASS features

Unbalanced ringing @ 5REN per line

18kft loops

Integrated GR-909 metallic testing

The PAC24 also includes support for SIP and
MGCP based Softswitch interoperability.The
same PAC24 can be used to communicate 
to alegacy circuit switched Class 5 switch or
alternatively, to a next generation IP based
Softswitch. With the PAC24 line card, Service
Providers can deploy an IP broadband Access
system that can protect and take advantage 
ofexisting or future Class 5 investments.

Part of a IP Broadband 
Access Family

Whether it is broadband ADSL2+, FTTH or
POTS, the iMAP family is the ideal platform for
last mile service delivery.The PAC24 line card
can be used with any of the iMAP family of
carrier grade, IP Multiservice Access platforms:

iMAP 9700 (9RU, 17 service slots)

iMAP 9400 (3RU, 7 service slots)

MiniMAP 9100 (1RU, 3 service slots)

Provisioning, management, and diagnostics of
subscriber ports can be accomplished from
either the iMAP command line interface or the
NMS.

The AT-TN123 has been designed to survive
the most rugged environmental conditions. It
can be confidently deployed in either a central
office or in outdoor enclosures withstanding
extremes of heat, cold, and light exposure.

Key Features

24 POTS and ADSL2+ ports 
with Integrated Splitters

Integrated ring generator with 
15 REN capability

Selectable G.711 or G.726 VoIP CODEC

SIP and MGCP call control protocols

CLASS feature support

Support for V.90 analog modem rates

Automatic or manual selection of ADSL2+,
G.DMT, S=1/2, or T1.413  modes

Flexible control of traffic priorities for voice,
video, data applications

Video-optimized

Currently available in North America only

QoS

Four Queues

Priority scheduling

VC to VLAN Mapping

Security

MAC limiting (up to 64)

MAC flooding – VLAN-based

Services Supported

High Speed Internet

VoIP

IPTV

Gaming

POTS

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