PSAX family brochure.qxd - Convergent Communications (India)

The PacketStar Family
of ATM Multiservice Media
Gateways for Service Providers
TM
Multiservice, Multimedia
Concentration from the Customer
Premises to the Central Office
New user profiles and broadening customer needs
demand a globally managed network paradigm
In businesses worldwide, network
users are placing increased demands
on the legacy, TDM-based WAN
infrastructure. These demands
create new challenges for service
providers to expand their services to
accommodate new user profiles.
Attempting to include data
networking needs as diverse as Web
access and corporate intranets
within existing facilities is not an
effective strategy. Frequently, overburdened voice networks cry out for
off-loading mechanisms. While
ensuring the performance of existing services must be a paramount
goal, the competitive pressures of
the new market demand a highly
proactive, prescient plan of action.
All communications players
—whether they are incumbent or
competitive local exchange carriers,
competitive access providers,
Internet service providers, or niche
providers—must gracefully shift to
a new paradigm. ATM-based,
extending out to the smallest remote
site and branch office, globally
managed down to the circuit level,
this new model must be the end
game for all carriers. The Lucent
Technologies PacketStarTM family has
the power today to deliver platforms
today that can deliver multiservice,
multimedia concentration services
to your corporate customers—
today.
The PacketStarTM Family
Wherever you are in your business
plan, we have the solution to move
you forward as rapidly as you want.
Deployment speed may be your main
concern, or you may want to gradually
move your legacy voice and data
services onto a new ATM-based infrastructure. The Lucent Technologies
PacketStarTM PSAX family offers true
multiservice, wide-area media gateways that concentrate lower-speed
services onto a single high-speed ATM
infrastructure. The hallmarks of
PacketStar systems are reliability,
redundancy, scalability, and global
management. These characteristics
place our systems at the top of the
carrier-class market. They also explain
why carrier networks, enterprise
private networks, and military projects
worldwide use Lucent PacketStar
systems.
A versatile "chameleon" line that can
adapt to any multiservice profile, the
PacketStar family delivers:
n
A scalable line of products, from
customer premises to the central
office, featuring a broad range of
user and network interfaces
n
Cost-effective price per port;
carrier-class engineering; highdensity aggregation of multiservices down to the DS-0 level
n
Common, interchangeable hardware modules that provide an
upgrade path
n
Global management from the
network element level to the
network level
n
Advanced traffic management for
sophisticated QoS options
n
Compact, scalable solutions that
provide greater port density per
telco rack than other access products
n
NEBS Level 3 compliance for
collocation feasibility and high reliability
n
Worldwide customer support
Access solutions for the customer premises,
edge, and central office
Entry-level Customer Premises Solutions
Mission: Extending the reach of ATM services to small or branch offices
Even small, remote locations can command the communications power of large, corporate networks
fixed Interface Control Module. Various
hardware configurations are available,
providing combinations of voice and data
interfaces.
PSAX 15 Multiservice
Media Gateway
The PacketStarTM PSAX 15 unit is an
extremely cost-effective entry-level platform that provides packetized voice and
data services over low-speed T-1/E-1
ATM trunks. A single PSAX 15 unit at
the customer premises can be the first
step in helping your customers extend
ATM services to even the smallest office
in a corporate network.
The PSAX 15 unit makes migrating from
legacy voice and data into integrated
voice and data over ATM easy and inexpensive. The PSAX 15 unit supports one
WAN uplink with interface speeds up to
DS-1/E-1 and offers up to nine service
interface modules including native LAN
and digital or analog voice compression.
PSAX 50 Multiservice
Media Gateway
The most flexible multiservice access
product in its class, the PacketStarTM
PSAX 50 unit enables service providers
to meet the demands of a growing enterprise customer with a single customer
premises solution. With the PSAX 50
unit, you can deliver affordable ATM
services at T-1/E-1 rates to small, midsized or branch offices that need a more
scalable platform than the PSAX 15 unit.
By enabling consolidation into a single
ATM network infrastructure, the PSAX
50 unit dramatically reduces equipment,
operations, and local access costs.
With a single Interface Control Module,
the PSAX 50 unit accommodates up to
10 I/O interfaces. These support a variety
of connections including legacy TDM;
digital voice; analog voice; native ATM;
frame relay; Ethernet, H.321, H.310, and
H.323 video; and HDLC and SDLC serial
data.
Like the PSAX 15 unit, the PSAX 50 unit
features a compact chassis, 44.5 cm (1.75
in.) high, suitable for mounting in a rack
or standing alone. Unlike the PSAX 15, it
is designed to be easily upgraded to the
more powerful PSAX 100 unit by simply
inserting a new trunk module and
upgrading the unit's software license.
This allows smooth migration to connections at higher speeds, ranging from N x
T-1/E-1 IMA (inverse multiplexing for
ATM), DS-3/E-3, and OC-3c/STM-1.
Because the PSAX 15 unit supports both
transparent LAN bridging and IP routing,
service providers can use it to deliver
Internet access, intranet and extranet
services, virtual private networks, or
managed data services to remote facilities
and branch offices. The PSAX 15 unit's
voice interfaces use advanced voice
compression technology plus silence
suppression to achieve significant bandwidth savings.
The PSAX 15 unit occupies only 1.75
inches of vertical space mounted in a
rack or in a stand-alone configuration,
making it ideal for the branch office.
Packaged for quick and easy deployment
at multiple sites, the PSAX 15 comes
configured and ready to install, with a
High-mix, low-cost integrated access provided
Midrange Customer Premises Solutions
Mission: Multiservice, multimedia access and concentration for the larger office
A powerful vehicle for offering multiple applications and broadband services to corporate customers
PSAX 100 Multiservice
Media Gateway
The PacketStarTM PSAX 100 Multiservice
Media Gateway is the ideal platform for
service providers who want to offer a high
mix of applications and simple, economical access to broadband WANs. Ideal for
mid-sized locations requiring access rates
above T-1/E-1, the PSAX 100 unit hides
the complexities of ATM from end users
while allowing the service provider to
maintain QoS guarantees for all types of
applications. It supports ATM access rates
from T-1/E-1 to OC-3/STM-1, including
T-1/E-1 inverse multiplexing for ATM
(IMA), providing investment protection as
bandwidth requirements increase.
The PSAX 100 unit’s modular architecture
enables service providers to integrate
multiple services on one platform. These
include:
n
Advanced data services such as highspeed Internet access
n
High-throughput router and server
connections (up to eight 10/100
Mbps Ethernet ports)
n
Analog voice with advanced voice
compression
n
Digital (PBX) voice services
With high density in a small footprint,
one PSAX 100 unit can accommodate up
to 17 interfaces. It features the same
compact chassis as the PSAX 50 unit, 4.45
cm (1.75 in.) high, and is suitable for
mounting in a rack or standing alone.
network trunk requirements, increase
core efficiency, and develop new services.
It offers the same superior performance
and protocol-processing features as the
PSAX 100 unit and the same user and
network interface options, but in higher
concentrations, with a 57-interface port
capacity.
PSAX 600 Multiservice
Media Gateway
The PSAX 600 system's three-slot chassis
provides optional redundancy capabilities
for maximum availability in a compact
package,19.05 cm (7.5 in.) high. This
makes the PSAX 600 system an excellent
choice for multitenant applications, as
well as for the regional offices of enterprise customers. The PSAX 600 system's
optional power and control-logic redundancy provides today's required levels of
fault tolerance and resilience.
The PacketStarTM PSAX 600 Multiservice
Media Gateway offers a powerful, midlevel broadband service access solution. It
delivers reliable, high-density architecture
that geographically extends the ATM
network infrastructure and enables broad
ATM service deployment. By economically concentrating regional low-speed
ATM traffic for transport to a core ATM
backbone network, the PSAX 600 system
lets service providers reduce their
Sophisticated performance monitoring
and diagnostic capabilities help network
operators anticipate and correct problems
before they affect users. Componentbased software provides enhanced
network availability, reduces overall
memory requirements, and accelerates
new service development. Software
modules can be added or modified independently. Software can be upgraded
easily, with minimal network disruptions.
Integrated easily with video equipment,
the PSAX 100 unit delivers broadcastquality MPEG video. It is equally at home
provisioning multimedia services such as
videoconferencing and interactive
distance learning.
The PSAX 100 unit is engineered for the
efficiency and high performance needed
for concentrating services. For example,
each PSAX 100 unit supports over 1 Gbps
cell processing and 1 Gbps packet processing, providing industry-leading performance.
Service as needed, with switching concentration
Central Office, Carrier-grade Access Solutions
Mission: Enhance revenue-generating services and ATM service level management
Extend ATM beyond the core, using the special strengths of highly resilient and reliable concentrators
PSAX 1250 Multiservice
Media Gateway
The PacketStarTM PSAX 1250 Multiservice
Media Gateway is a high-capacity access
concentrator that enables universal
connectivity to ATM wide area networks
and extends service level management to
the central office. Designed for the central
office or deployment in large enterprise
networks or in the larger customer
premises, the PSAX 1250 system becomes
the new focal point for high-density
aggregation of frame relay, xDSL, IP,
TDM, and native ATM services. It affords
the ideal entrance strategy to ATM, allowing service providers to offer ATM services
without investing up front in an ATM
network infrastructure. For example, you
can use the PSAX 1250 system when you
need:
n
End-to-end, managed ATM access
concentration and narrowband adaptation on one platform at the edge of
the ATM network
n
Digital subscriber line access multiplexing (DSLAM) aggregation,
concentrating high-speed digital,
cable, dial-up, and ISDN services
n
Private line ATM, collapsing parallel
data and voice networks for transport
over public carrier network services
n
Internet call diversion (ICD) for offloading IP traffic from voice switches
n
CDMA soft handoff and wireless traffic backhaul between base stations
The PSAX 1250 system supports up to 10
I/O modules in the 19-inch shelf and up
to 14 in the 23-inch shelf, in any mix. In
addition, many of the system’s user and
network interfaces support softwaredefinable ports. This key advantage allows
CES, Frame Relay, and ATM traffic to
coexist in N x 64 blocks within the
DS-1/E-1 circuit, for channelized DS-1/E1 or channelized DS-3 services. Given the
flexibility to provide “any service, on any
channel, at any time,” the service
provider can develop new service offerings, create innovative ways of managing
bandwidth, and reduce capital equipment
and facilities costs.
At the same time, the PSAX 1250 system
has a highly robust architecture that
features: a dual-bus 1.2 Gbps backplane
and optional common-card redundancy;
high port density; NEBS compliance for
colocation; and password security needed
for central office deployment.
PSAX 2300 Multiservice
Media Gateway
The PacketStarTM PSAX 2300 Multiservice
Media Gateway delivers 2.3 Gbps for ATM
switching and the highest density (up to
15 I/O module slots) in the PSAX product
line. Specifically designed as a carrier-
grade companion to the PSAX 1250
system, it offers all the redundancy and
protection features of the PSAX 1250
system with enhanced capacity for high
density and increased-bandwidth
modules. This means key features such as
–48 V dc power supplies, integrated variable-speed fans, CPU modules with
configurable DRAM, and a three-segment,
redundant backplane. In conjunction with
the Stratum 3–4 modules, each backplane
segment is capable of supporting 1.3
Gbps. If one of the Stratum modules fails,
the PSAX 2300 system can still support
from 1.6 to nearly 2 Gbps of traffic.
ATM service concentration
Central Office, Carrier-grade Access Solutions (continued)
bandwidths beyond 10 Gbps. It
supports two groups of 4:1 protection, for DS-3, E-3 and STS-1e
modules. The redundant modules
protect failures of any one of four
modules, providing the highest reliability of any PSAX product. This is in
addition to automatic protection
switching for the OC-3c/STM-1 and
OC-12c/STM-4 modules, CPU redundancy, and stratum clock redundancy.
All this can be deployed in a comparatively small footprint. The NEBS-compliant chassis measures 9 rack units or 39.9
cm (15.71 in.) high.
Carriers will appreciate these central office
system qualities:
n
n
n
n
n
n
n
n
n
Support for standards-based, linear,
nonrevertive OC-3c/STM-1 1+1
Automatic Protection Switching that
provides enhanced reliability, through
protection against facility, port, or
module failure on the trunk side.
I/O and server modules that are hot
swappable. They are interchangeable
between the PSAX 2300 and the
PSAX 1250 units.
Call control protocol support for SVC
VToA applications and Internet call
diversion.
PNNI/ILMI support for robust and
reliable network operation.
Traffic shaping on virtual interfaces
and traffic management UPC policing
for congestion control.
Downloadable software and firmware
drivers, which simplifies upgrades.
End-to-end traffic prioritization for
both IP-based and circuit-based traffic.
AAL-2-based voice compression technology, enabling eight times the call
capacity of traditional TDM circuits
while maintaining toll quality using
the G.729A CS-ACELP Standard.
Support for the G.168 echo cancellation capable of handling delays up to
128 msec.
PSAX 4500 Multiservice
Media Gateway
The PacketStarTM 4500 Multiservice
Media Gateway culminates four
generations of engineering breakthroughs. It offers up to 10 Gbps of
switching capacity, the highest in the
PacketStar family, and remarkable,
carrier-class reliability.
The PSAX 4500 offers an unmatched
range of service capabilities, end-toend traffic prioritization, “anyservice, any-channel” flexibility, and
breakthrough voice technology. All
modules, the CPU, and system software are interchangeable with all
other PSAX central office products.
The new high-performance backplane design supports 15 interface
slots. In four segments, the backplane allows each segment to be
scaled independently to provide
nonblocking, redundant chassis
The AQueManTM traffic management
scheme assigns internal traffic priorities even more specialized than the
ATM Forum, to differentiate voice,
video, and data requirements, and
deliver quality of service for each.
Using the latest voice-compression
technology, the voice server modules
used with the PSAX 4500 deliver
service providers eight times the
capacity of traditional time division
multiplex circuits while maintaining
toll quality and reducing costs by
nearly 30 percent per channel.
A single PSAX 4500 system at the
edge of the carrier network can transition traffic from a large number of
network customers over high-speed
OC-3c/STM-1 or OC-12c/STM-4
trunks into the ATM core, managing
the whole quickly and efficiently,
down to the individual permanent
virtual circuit.
Architecture
The entire PacketStarTM line packs sophiscated communications options
in compact packages.
The PacketStarTM family meets a full range
of communications needs. One group of
sophisticated, relatively inexpensive units
handles communications at the customer
premises (the PSAX 15, 50, 100, and 600
units). The other group of carrier-grade
products works best at the central office
to manage a wide range of voice, data,
and video communications (the PSAX
1250, PSAX 2300, and PSAX 4500
systems). Each unit's modular structure
enables tailoring to specific requirements,
and the units work well together.
The customer premises group features
two basic component types, ensuring easy
configuration and replacement:
n
n
Interface control modules (ICMs)
Protocol option devices (PODs)
Each ICM contains a system board
consisting of a cell and a packet subsystem. These subsystems switch cells and
packets simultaneously and route traffic
between I/O ports and other ICMs. The
PODs are mezzanine boards that are
attached to the ICM. Two types are available: Interface PODs (IPODs), which
provide service interfaces, and Expansion
PODs (XPODs), which provide additional
interface capabilities such as ATM widearea connections and circuit switching.
The PacketStarTM PSAX 15, PSAX 50, and
PSAX 100 units come equipped with one
power supply module, while the PSAX
600 unit offers the option of two redundant power supply modules. The PSAX
600 unit also has two redundant system
utility modules for craft interface management and external alarms.
Components for the central office group
focus on redundancy and high density.
These include:
n
I/O modules, providing physical
interface to user and network equipment
n Server modules providing shared
resources for IP and voice service
features
n Two redundant power supply
modules
n Two redundant Stratum 3–4 modules
n Two redundant Central Processing
Unit (CPU) modules
n Chassis with slotted shelf, backplane,
and fan tray
Depending on the configuration and the
chassis (19-inch or 23-inch), the PSAX
1250 system can accommodate up to 14
I/O and server modules, while the PSAX
2300 and the PSAX 4500 systems accommodate up to 15 modules. The PSAX
4500 offers enhanced redundancy for
DS-3, E-3, and STS-1e modules.
PODs and modules can be arrayed to offer extreme flexibility
Element
Management
All of the products in the Lucent
Technologies PacketStarTM family are
manageable by the simple network
management protocol (SNMP). They
support Telnet, in-band, and out-of-band
management, and feature both a graphical
user interface (GUI) element management
system and a menu-based console user
interface.
To manage the PacketStar central office
products, Lucent offers the AQueViewTM
system. AQueView software enables
comprehensive, real-time, centralized
management of the PacketStar central
office devices. The software can configure
the system, accept upgrades, and monitor
faults and performance. Flexible and scalable, the AQueView system is available
as either a client/server or stand-alone
application.
AQueView operates either within or
independently of the HP OpenView
framework and is available for both Unix
and Windows NT environments. It also
features a CORBA northbound interface,
enabling integration with higher-level
management systems for flow-through
provisioning.
The Lucent Technologies PacketStar
customer premises products feature the
WebXtend TM element management
system, the first management architecture
to combine the power of Java-based
computing with support for SNMP.
WebXtend management leverages Web
technology to deliver secure, user-friendly
access to advanced network management
systems. The WebXtend architecture is
based on a standard Web client/server
model. A Web server is embedded in each
PacketStar device; the client can be any
Java-enabled Web browser. This provides
a cost-effective, powerful Web-based
management solution.
AQueView TM easy-to-follow element management screens
Network
Management
At the network level, management of the
entire PSAX line is being integrated
under the Lucent Technologies Navis
network management system. Based on
a distributed architecture and open
management models, the Navis management suite (which consists of NavisCore
and NavisXtend) will provide comprehensive management for the Lucent
ATM WAN portfolio, from the customer
premises to the edge of the carrier
WebXtend
network through the ATM core. The
distributed Navis management applications align directly with service-provider
business operations, enabling end-to-end
provisioning; centralized performance,
accounting, and fault management; and
customer network management. The
Navis management applications also
feature open application programming
interfaces for easily integrating with a
customer’s existing operating software.
This facilitates trouble-ticketing, billing,
flow-through provisioning, and other
operations critical to network and service
deployment.
TM
screens
congestion management
Traffic management
The PacketStarTM family integrates a
range of sophisticated mechanisms for
traffic policing, prioritization, and
congestion management. For example,
the PacketStar family offers:
n
ATM policing, where a usage parameter control function evaluates
each virtual path or virtual circuit to
determine if it complies with parameters such as peak cell rate,
sustained cell rate, maximum burst
size, and cell delay variation tolerance
n
Priority queuing for each service
class (CBR, rtVBR, nrtVBR and
UBR) with configurable, advanced
n
Bandwidth management using
connection admission control (CAC),
techniques, allowing configurable
overbooking.
purging, and aging techniques help
reduce cell loss and minimize cell delay
variance.
The PacketStar family of central office
products features adaptive queue
management (AQueManTM), an advanced
queuing and cell-switching algorithm.
AqueMan manages available bandwidth
economically, allowing oversubscription
up to a factor of ten for variable bit rate
traffic.
Multilevel prioritization establishes up to
ten separate queues for different classes
of traffic and uses weighted priorities in
statistical multiplexing and aging techniques to send ATM cells during congestion. This can dramatically reduce
retransmission and permit the network
to gracefully process through congestion
without affecting standard protocols or
relying on extensive network reconfiguration.
AQueMan also supports up to ten different classes of service based on standards
defined by the ATM Forum. Robust cell
buffering (up to 64M cells per module),
The PacketStar central office products
also support traffic shaping down to the
virtual interfaces on higher-capacity
access lines.
Customer premises applications
Native LAN services
Driven by customer demand to move
away from complex WAN networks and
satisfy higher bandwidth requirements,
native LAN services are growing in
popularity. PacketStarTM customer
premises products, such as PSAX 100
units deployed at headquarters and
remote sites in the enterprise network,
are an ideal way to provision high-speed
native LAN services quickly and easily.
From the customer standpoint, the
network is an extended LAN. For the
service provider, the PSAX 100 system
provides a clear demarcation point into
the public network that is both familiar
to the customer and convenient for the
service provider. PacketStar systems
support the necessary LAN protocols and
speeds including wire speed forwarding
(10/100 Mbps Ethernet) and RFC 1483
bridging, as well as the ability to establish secure bridge groups.
Native LAN services
Multitenant access
concentration
In this application, a PSAX 600, located
in the common equipment room of a
Multitenant access concentration
multitenant subscriber location, combined
with PSAX 50 or PSAX 100 units on each
floor, enables distribution of a variety of
ATM-based services tailored to specific
customer needs. The PSAX 600 system
concentrates traffic for shipment to the
ATM backbone. Services provided range
from ATM user network interface, LAN,
frame relay, and voice to converged data,
video, and voice offerings. The service
provider can own the PacketStarTM units
and bundle them as part of the offering.
Alternatively, service providers can sell
their customers units as a means of
access, thereby reducing the service
provider’s provisioning costs.
VPN/managed services
Virtual private network (VPN) services
have become a highly cost-effective way
for enterprises to maintain the appearance, functionality, and usefulness of a
dedicated private network while saving
on access costs. ATM is now recognized as
the ideal technology for delivering inherently secure, scalable, and high-quality
VPN services to enterprise customers.
Using PacketStar customer premises
access units deployed at remote offices,
Virtual private network/managed services
independent voice, data, and video VPN
services can be combined on a single
access link while maintaining the required
quality of service for each traffic type. By
eliminating the need for a dedicated
access facility for each traffic type, service
providers save on operations, equipment
and local access costs. At the same time,
the customer benefits not only from
consolidating separate legacy voice and
data networks but also by migrating to
high-performance yet transparent ATM
VPN services. In the example shown, the
PSAX 50 unit can be used at smaller
remote sites requiring access at T-1 rates
and the PSAX 100 unit can work at sites
requiring access at speeds up to
OC-3/STM-1. The PSAX 50 units can later
be upgraded to PSAX 100 units as
customer bandwidth needs grow.
Central Office applications
Traffic aggregation
A single PSAX 1250 system, positioned
at the edge of the carrier network, can
aggregate traffic from a large number of
enterprise network customers. These
PSAX systems deliver the traffic to the
ATM backbone over high-speed OC-3c
trunks. Upstream traffic can flow at
speeds ranging from N x T-1/E-1 and
T-1/E-1 to T-3/E-3 or even OC-3/STM-1.
In this application, the smaller PSAX
central office unit becomes a single point
of access into the ATM core, enabling
common management for fast and efficient circuit provisioning and highly
granular circuit control down to the individual permanent virtual circuit. The
PSAX 1250 systems’ high-density
concentration also makes for efficient use
of core facilities.
Traffic aggregation at the edge
Digital subscriber line access multiplexer concentration
DSLAM concentration
Today’s small office and home office
customers demand high-speed digital
services in support of Web calls, and
cable modem, dial-up, and ISDN connections. Local exchange carriers using the
PSAX 1250 system can satisfy these
requirements with minimal equipment
outlay. These PSAX systems, with their
versatile range of ATM and non-ATM
interfaces, accommodate high-speed IP
traffic originating from 100 Mbps
Ethernet platforms, traffic from DSL
concentrators, and native ATM traffic
from cable modem links.
Versatile and adaptable, either of the
smaller PSAX central office products
would provide the small office with the
most modern communications.
Voice telephony over ATM
Voice telephony over
asynchronous transfer
mode (ATM)
Using a PSAX 1250 Multiservice Media
Gateway at the edge of the network and
the GX 550 ATM Smart Core switches in
the ATM backbone, this configuration
provides superior VToA performance.
The PSAX 1250 system interfaces to the
core network at speeds up to OC-3c on
the upstream side and provides an interface to 5ESS TM voice switches, enabling
voice to be transported over ATM within
an existing voice infrastructure. It also
supports voice compression, echo cancellation, and silence detection. Acting as a
voice gateway for local access or
toll/tandem SVC operation, it supports
SS7 signaling for call setup and processing.
Wireless switching module interconnections
Wireless switching
module interconnect
Instead of a fully meshed network, a
hub-and-spoke ATM-based topology can
be used in cellular telephone applications
to save substantial costs in facilities and
hardware. The switching modules in the
digital cellular switch can be interconnected via ATM using PSAX 1250
systems. This arrangement saves money
because it allows the voice coders on one
switching module to share among the
others within the cluster, reducing the
number ATM protocol handlers required,
and also reducing the number of OC-3c
connections. The PacketStarTM solution
also provides for interlocation "soft
hand-off," (a technique used in codedivision multiple access cellular network
technology to reduce call dropouts)
within the message switch controller.
Worldwide customer support
PacketStarTM products come with a 90-day limited software warranty and a one-year limited hardware equipment warranty, and are
backed by the expertise in networking and the worldwide Lucent Technologies support network. To learn more, contact your Lucent
Technologies representative, authorized reseller, or sales agent. Or, visit our Web site at www.lucent.com.
Internet call diversion
Internet call diversion
Competitive local exchange carriers (CLECs) can
reduce the investment required for new circuit
switches and relieve congestion by segregating
voice and traffic coming into the central office
while preserving reciprocal compensation with the
incumber local exchange carriers (ILECs). The
PSAX 1250, together with a Lucent Technologies
Connection Gateway, can be used to perform
Internet call diversion to deliver the Internet
protocol traffic to the Internet service providers
(ISPs) over dedicated primary rate interface or
ATM lines, maximizing the use of the circuit
switches for voice traffic. Because the CLECs retain
switching and routing control, they can use ISPs
with centralized facilities and an infrastructure that
aggregates the ILEC-bound trunk facility.
Private line over ATM
Service providers selling DS-1 leased line services
to business customers on a point-to-point basis can
use ATM services to aggregate and transport these
services. As the customer base grows, the scalability of ATM allows the service providers to expand
these services while permitting convergence of
their other voice and data overlay networks.
Private line over ATM
AQueView, OneVision, and PacketStar are Lucent Technologies trademarks.
All other trademarks, registered trademarks, service names, product, and/or brand names
are the sole property of their respective owners. This document is for planning purposes
only and is not intended to modify or supplement any specifications or warranties relating
to these products and services.
© 2000 Lucent Technologies. All rights reserved.
Printed in the U.S.A.
Printed on paper with 100% recycled content. Please recycle.
07/2000 951MOA6101 H2A
Issue 2