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INTRACOM's Access Network System (IAS) is a family
of products specially developed for the provision of
integrated Full Service Access Platforms including voice,
data, narrowband & broadband services. IAS products
are characterized by modular architecture providing
flexible, fast and cost effective adaptation to present
customer needs, in addition to upgradability and
expandability supporting future service requirements.
IAS-F, INTRACOM Fiber Access Network System, is
applicable for areas where the primary access network is predominantly
wireline,
INTRACOM
while
Wireless
IAS-W,
Access
Network System, is applicable for
areas where access is primarily
wireless as prescribed by the geographical morphology and residential spread. Both systems utilize
common subscriber access modules and are mutually managed by
powerful network management
system ensuring the highest level
of integration and flexibility for the
total network environment.
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System Overview
Wireless based technologies have nowadays become a strong rival to the wirelinebased counterparts, for building modern access networks. The advantages of wireless
access systems include scalable investment profile, short roll-out time and increased
flexibility.
IAS-W is a digital wireless access system providing operators with state-of-the-art
solutions for creating telecommunications access networks, while bringing most advanced services to subscribers. The utilisation of IAS-W system offers a microwave
primary network while the last-mile subscriber connections can be implemented either
via copper cable or completely wireless. In the latter case, IAS-W acts as a WLL
system through an integrated DECT subsystem.
Applications
IAS-W offers customised solutions to meet diverse operators’ needs :
In urban and suburban areas: IAS-W can satisfy in a cost-conscious manner the
stringent time and capacity requirements in areas where the rapid expansion of potential subscribers base requires urgent deployment of telecommunication servicing,
including ISDN and high speed data, but the existing cable infrastructure is either
not sufficient or not available.
In rural areas: IAS-W is the optimum solution for such areas which are characterised
by large distances from the Local Exchange, low subscriber density and grouping,
harsh terrain and environmental conditions, lack of telecom and utilities infrastructure.
In Data networks: IAS-W can be configured to support applications such as Business
Networks, LAN interconnection, high-speed Internet Access or to act as a back-haul
network for micro/pico cellular or WLL base stations.
System Architecture
An IAS-W Point-to-MultiPoint system includes one central node and up to 120 remote
network nodes configured to serve any required network topology in a range of several hundreds of kilometres. The cenFeatures
tral node is the hub site, acting as the
! Optimum spectrum use,
single connection point between an
TDM/TDMA FDD wireless access mode.
IAS-W system and the Telecommuni! System capacity 4, 4x4 Mbps.
cations Network. The remote nodes
! 64kbps or 32 kbps traffic channels,
are connected to the central node,
on demand assignment basis
utilizing microwave frequency bands,
(4 Mbps system).
sharing the channels available in the
! End-to-end wireless access solution,
system. The remote nodes are incombination of TDMA and DECT air
stalled near the subscriber premises
intrface technologies.
!
Wide range of available frequency
bands, 1.5, 2.6, 3.5 and 10.5 GHz.
!
Extensive NMS capabilities.
!
Low power consumption due to burst
transmission mode in both, upstream
and downstream, directions.
!
Interoperability with existing network
infrastructure.
!
Variety of services through different
available user interfaces.
!
Customised solutions for RLL (DECT
subsystem), Data networks (IAS-Wd).
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and provide the required interfaces to the subscriber equipment. IAS-W can also be
deployed in sectorised configuration, increasing total system capacity. Subscriber
equipment is connected to IAS-W remote nodes via :
Wireline network - The subscriber equipment is directly connected to the closest
IAS-W node via last-mile wireline, or
DECT air interface - The subscriber equipment is connected to the telephone socket
of the DECT terminal installed in the customer premises. The terminal is linked by
DECT air interface to the closest IAS-W node, which is equipped with appropriate
DECT interface units and antenna system.
System Components
Wireless Central Node (WCN)
WCN is the single connection point between an IAS-W system and the Telecommunications Network, provides the interfaces between the system and the Local Exchange
and/or Data network as well as all the main required control and traffic handling
functions. WCN also provides the relevant interface for IAS-W Network Management
System. The Network interfaces supported are :
! Digital (ETSI V5.2 SL/ML)
! Analogue (2-wire)
! n x 2 Mbps (G.703) to Data networks
IAS-W is transparent to the Local Exchange providing subscribers with all the revenue
generating services.
Terminal Node (TN)
The Terminal Node (TN) is a remote network unit housed in a cabinet suitable for outdoor or indoor installation. It communicates with WCN or RN, via a TDM/TDMA radio
unit and serves as the termination point for the wired subscribers within an IAS-W
network. It is easilly configurable to accept all availlable interface types, and to accommodate various subscriber densities at each site.
Compact Terminal Node (CTN)
The Compact Terminal Node (CTN) unit is a version of Terminal Node used to serve
either areas with lower subscriber densities or individual users with high traffic/service
requirements enhancing thus further network design flexibility and cost effectiveness.
It is intended for outdoor use and is equiped with an integrated antenna system.
Repeater Node (RN)
The Repeater Node (RN) is used to enhance system coverage, in the cases where no
line-of-sight exists or very long hop distances are required. Cascaded RNs can
Interfaces - Services
extend system range to hundreds of kiloIn order to satisfy the diverse service
meters. It operates as traffic-through or
requirements, IAS-W is equipped
with the following access interfaces:
!
Analog 2-wire, to support
- POTS (pulse or DTMF) / Fax /
Voice-band modem
- Payphones (12 or 16 KHz
metering pulses)
!
2/4-wire for analog leased lines
!
U-interface (160kbps), for BRAISDN service provision
!
Data interfaces, for nx 64 kbps
services (V.35, V.11/X.21 or G.703)
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NMC
POTS
DCN
PAYPHONE
TN
DATA
NETWORKS
G.703
N x 2 Mbps
EXCHANGE
V5.2,
Analog 2-wire
FAX
ISDN U-Line 160 kbps
RN
NT+TA
N x 64 kbps (V35/V11)
POTS
WCN
CTN
ISDN U-Line 160 kbps
NT+TA
N x 64 kbps (V35/V11)
ANALOG
LEASED
LINE
NETWORK
2/4-wire VF
POTS
WTA
TN +
DECT
LOCAL
TERMINAL
Core Network
PMP Microwave System
DECT Links
FAX
POTS
WTA
PC
POTS
ISDN U-Line 160 kbps
Drop Network
NT+TA
Subscriber Premises
drop/insert unit providing all interface types available with IAS-W.
DECT Subsystem
The DECT WLL subsystem incorporated within IAS-W provides an end-to-end fixed
wireless connection, eliminating the need for drop wire in the local loop, in areas
where drop wire is expensive or impossible to be installed. Each DECT Subsystem
includes the following units :
The Wireless Subscriber Card (WSC), integrated within a remote network node, performing the interfacing of the DECT-connected subscribers to the core IAS-W system.
The Wireless Terminal Adaptors (WTA), i.e. the DECT terminals, installed at the
subscribers' premises, available for indoor or outdoor installation.
Network Management
Management services are based on :
! Local Terminal graphical Windows-based application, running on a Personal Computer. It is connected to the WCN providing the whole system with full access.
! IAS-W Management System (ARMS), an Element Manager Application for monitoring and managing numerous IAS-W systems, providing standardised interfaces to
Operations Support Systems (OSS).
IAS-W Management System facilitates rapid installation & configuration of the network
while provides extensive Alarm
Hadling, Testing and Performance Analysis facilities.
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Radio in the Local Loop solution based on IAS-W
In an IAS-W system all connected subscribers can be served through its incorporated
DECT subsystem. This Radio in the Local Loop configuration ensures easy installation, minimizes operator's initial cost while increases network deployment flexibility.
Typical system applications include :
!
high subscriber density areas requiring
POTS
quick service provision,
!
WTA
tenance make copper-based
TN +
DECT
access prohibitive,
!
FAX
areas where excavation and mainDECT Links
temporary net-
WTA
EXCHANGE
works in case of
POTS
WTA
PC
POTS
WCN
special events or
in emergency recovery situations.
WTA
TN +
DECT
In this deployment each
IAS-W
remote
equipped
interface
node,
with
DECT
units
POTS
DECT Links
LOCAL
TERMINAL
WTA
POTS
and
antenna elements, acts as an individual
"DECT Base Station". Each of the BSs can
serve a great number of subscribers distributed within a cell
of up to 15 km radius.
The system can deliver services at
even very remote environments
through IAS-W TDMA distribution
Features
!
Reduced network installation cost
and time
!
Scalable and flexible deployment
!
Standardised DECT based solution
!
High capacity DECT Base Stations
up to 360 subscribers
!
Integrated distribution backbone
network
!
Secure delivery of toll quality Voice
and High Speed Data services
!
Sectorized configuration for High
System Capacity up to 480 traffic
channels
!
Coexistence of
wireline terminations-DECT interfaces
within each Remote Node
backbone, thus eliminating the
need for additional transmission
facilities
usually
required
similar RLL systems.
with
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IAS-Wd, A low cost IAS-W solution for data services
IAS-Wd is a low cost, compact version of IAS-W, designed to provide telecom operators with a cost-effective solution on building access or backhaul transmission data
networks. It can be used replacing effectively wireline LL or Point-to-Point radio links
solutions.
Main applications include :
! wideband data services to small and medium size businesses (SME, SOHO),
! back-haul connectivity for scattered base stations of mobile or fixed narrowband
WLL networks.
Traffic from customer sites or base stations is transferred to a concentration point and
connected, via IAS-Wd central node equipment, to telecom data switches or cellular
network controllers.
The main components of an IAS-Wd system are :
Compact Central Node (CCN)
CCN is the single connection point between an IAS-Wd system and the Telecom Data
Switches, or Cellular network controllers. Due to its modular design IAS-Wd uses a
sectorized deployment configuration, providing a total capacity of up to 16 Mbps.
Compact Terminal Node (CTN)
The Compact Terminal Node (CTN) is the remote network unit. It is suitable for outdoor installation and includes an
integrated antenna system, reducing cost and site installation
Features
time. The bandwidth assigned to
! Replace effectively wideband
each CTN is configurable through
Point-to-Point radio links
management system and can be
! Outdoor terminal units with intescaled from 64 kbps to 2 Mbps.
grated antenna system
!
Low installation and maintenance
cost
!
Variety of telecom interfaces V.35,
X.21, G.703, E1/FrE1, 10BaseT
!
Best use of available frequency
spectrum
!
Flexible network deployment, use
of Repeater Nodes
!
Extensive Network management
facilities
Technical Specifications
SYSTEM DATA
IAS-Wd WIRELESS DATA SYSTEM
System Capacity
4 Mbps (per sector)
System Capacity(CCN)
scalable to 16 Mbps
Traffic Channels
120 x 32 kbps or 60 x 64 kbps (per sector)
Network Interface
N x 2 Mbps (G.703)
Services (CTN)
n x 64 kbps, Ethernet
User Interfaces
V.35, V.11/X.21, G.703, 10Base-T
Maximum number of
units per sector
POTS subscribers per
Remote Network Unit
Remote network units
Cascaded Repeaters
TN
RN
CTN
120
16
240
120
16
SERVICES
2 Wire POTS
PCM ITU-T G.711, G.712
ADPCM ITU-T G.726
Metering 16 kHz, 12 kHz
MICROWAVE TRANCEIVER
V5.2 (n x 2 Mbps)
ITU-T G.703,
ETSI ETS 300 347-1
Frequency Bands (GHz)
1.5, 2.4*, 2.6, 3.5, 10.5
ISDN-BRA
U-Interface
Access Method
TDM/TDMA/FDD
Analogue Trunk
4 Wire ITU-T G.712
Transmitter Power**
15~30 dBm or 25~35 dBm or 35 dBm
Data Services
64 kbps, n x 64 kbps
Channel Spacing
3.5 MHz
Modulation
DOQPSK
Spurious Emission
< -60 dBm
Receiver Threshold
(BER<10-3)
-90 dBm
Receiver Dynamic Range
(BER<10-3)
60 dB
Complied with
ETS 300-636,
EN 301-021, ERC 74-01
DECT WIRELESS SUBSYSTEM
Frequency Bands
1.88 ~ 1.9 GHz
Access Method
TDD/TDMA
Bandwidth
20 MHz
RF Carriers
10
Range
15 km (LOS)
Modulation
GFSK
Output Power
250 mW
Voice Coding
32 kbps ADPCM
Data Services
64 kbps, ISDN-BRA
Max Cell Capacity
360
User Lines per
DECT Terminal
2
19.7 km Markopoulou Ave., Peania, Athens, GR 19002
T +30 210 667 1000, F +30 210 667 1001
www.intracom-telecom.com
Ethernet
ITU-T G.703
ITU-T V.35
ITU-T V.11
IEEE 802.3, 10-BaseT
POWER REQUIREMENTS
Power Supply Voltage
WCN, CCN
TN, RN
CTN
WTA
-36 ~ -72 VDC
220 VAC or -36 ~ -72 VDC
220 VAC or -24 ~ -72 VDC
220 VAC
MECHANICAL DIMENSIONS (HxWxD in mm)
WCN Rack
2200 x 600 x 300
CCN (IAS-Wd)
45 x 482 x 245
TN, RN
518 x 366 x 322
CTN
425 x 265 x 100
WTA
255 x 185 x 41
ENVIRONMENTAL CONDITIONS
-5oC ~ +45oC
-35oC ~ +55oC
-35oC ~ +55oC
Operating Temperature
WCN, CCN
TN, RN, CTN
WTA
Humidity
up to 95% RH (non-condensing)
(* upon request) (** configurable, depends on freq. band)
Specifications are subject to change without prior notice.