Enterprise Network Series
Loop Voice Gateway
New opportunities with voice over digital subscriber line (VoDSL) technology
Simply providing network connections is no longer enough. Service providers must
also deliver those value-added services that will lead to fast revenue
generation. Digital subscriber line (DSL) is the most cost-effective solution
for delivering value-added applications over the last mile to end customers.
VoDSL technology offers service providers new revenue opportunities they can
easily and cost-effectively deploy using their existing DSL infrastructure. With
VoDSL, providers can take advantage of new opportunities while maintaining the
same high service quality and reliability their customers have come to expect.
VoDSL solutions prioritize, multiplex, and transport multiple voice and data
channels over a DSL connection to a gateway interface that provides connectivity
between a data network and the public switched telephone network (PSTN).
Alcatel offers a cost-effective, flexible architecture that easily scales to
meet the demands of a mass market DSL services rollout. Alcatel takes an
end-to-end systems approach to DSL with proven solutions. Alcatel's DSL
solutions allow for the introduction of new network services with a competitive
The Alcatel 7310 Loop Voice Gateway
With a platform based on the award-winning Alcatel 7300 ASAM DSL Subscriber
Access Platform (ASAM), the Alcatel 7310 Loop Voice Gateway (LVG) is a key
network element in realizing the best VoDSL solution in the DSL market. With its
carrier grade reliability and high scalability, the 7310 LVG is an ideal
solution for bundled voice and high speed data services.
Converging voice and data
The 7310 LVG is at the heart of a converged voice and data world. Together
with an integrated access for data and voice (IAD) - such as the Alcatel Speed
Touch Integrated Access for Data and Voice (IAD) - the 7310 LVG merges a quality
of service (QoS)-based broadband data access network with voice networking.
QoS for VoDSL
The 7310 LVG allows providers to implement extensive QoS for VoDSL telephone
services. The 7310 LVG supports QoS for multiple virtual circuits (VCs) and
classes of service over a DSL local loop, making it possible to provision voice
alongside data traffic. QoS capabilities inherent in the 7310 LVG allow
providers to manage circuit characteristics that impact voice quality, such as
delay, jitter, and cell throughput.
Supporting multiple ATM classes of service, including constant bit rate (CBR)
and variable bit rate real time (VBR-rt), with full QoS for each class, the 7310
LVG uses CBR or VBR service to guarantee bandwidth for delay-sensitive voice
solutions. Since the VCs are CBR and VBR-rt connections, the 7310 LVG guarantees
bandwidth for each voice call to ensure full QoS.
Bundled, cost-effective service offerings
The 7310 LVG allows providers to deliver bundled local, long distance, or
multi-line telephone services with Internet access to a variety of customers
from small- and medium-sized businesses to residential users over a single
copper pair. The 7310 LVG leverages the investments already made in local
exchanges, ATM switches and DSLAMs - without the need to change the end user
equipment already in place. With Alcatel's VoDSL solution, a carrier can provide
a business with ten toll quality telephone lines, and high speed Internet
access, over one DSL line. An added benefit is that dynamic bandwidth allocation
automatically increases the amount of bandwidth available for data applications
when end users are not using bandwidth for voice calls.
Alcatel's VoDSL technology offers providers scalability while minimizing
their incremental investment. The scalable hardware architecture of the 7310 LVG
allows providers to envisage a "pay as you grow" strategy. A single
gateway card handles eight E1 interfaces or 240 simultaneous calls toward a
local exchange. Providers can extend the system to eight cards or 64 E1/1,920
active calls allowing them to connect up to 8,000 business phones (1 to 4) or
20,000 residential phones (1 to 10). Embedded digital signaling processors (DSPs)
implement voice compression for optimal bandwidth usage, allowing providers to
grow their network seamlessly and cost-effectively.
True circuit-switched voice quality
Calls made using VoDSL technology are indistinguishable from traditional
circuit-switched telephone calls in terms of voice quality. From a user
perspective, there is no difference between a voice call over the traditional
PSTN and a voice call over a DSL access network compliant with ATM forum loop
emulation service (LES) using ATM Adaptation Layer 2 (AAL2).
Designed to ITU-T (Telecommunication Standardization Sector, International
Telecommunication Union) and ATM Forum AAL2 standards, the 7310 LVG guarantees
true transparent PSTN (analog voice, digital voice, fax, and modem) and ISDN
services for the end user while offering high quality voice services and
value-added local exchange features. Users can experience true circuit switched
voice quality and continue to receive the reliability they have come to expect.
Alcatel, your partner for VoDSL solutions
Alcatel is the right partner in the design and implementation of a VoDSL
network. Alcatel is the only company in the industry with extensive experience
in the deployment of both voice and DSL access networks. Designed to meet the
reliability, availability, and scalability of carrier class telephone equipment,
Alcatel's VoDSL solutions allow for the introduction of new network services
with a competitive edge - exactly what service providers are looking to offer.
||VoxTechnologies Corp. - Industrial
Tel: 972-234-4343 Fax: 972-234-4295