i2: Building Next Generation Voice Networks
(Part I of II)
David Wright, Full Professor
University of Ottawa
This track describes how the
telecommunications industry can achieve its current monumental
goal: to migrate voice from circuit to packet networks. Networks
of products are now available to migrate voice from the circuit
switched PSTN to packet switched networks such as ATM and
IP. They offer incumbent service providers the opportunity
to interwork with or replace existing Tandem, Toll, Class
4 and Class 5 switches, and they offer new service providers
switching functionality and feature provision at a fraction
of the cost of the circuit switches. This track provides information
on the business case and technical capabilities of the new
generation of packet voice switches, including convergence
switches, soft switches, media aware switches, media gateways,
call control servers, signaling gateways and media servers.
The track also provides experiences on migration of voice
to packet networks, and discusses additional revenue generating
voice features and services that are available on packet networks,
such as unified messaging and voice/web integration.
The sessions on Wednesday focus
on building the network, and consist of two 3hr "How
To" sessions. The speakers have coordinated their presentations
to lead us through the step by step process of building a
converged voice/data network and ensuring that it can provide
reliability, scalability and Quality of Service.
The Thursday sessions focus on
the voice features, services and applications that run over
a converged voice/data network. We start with a combined 3hr
session describing new services and applications and their
impact on the business case for packet voice. The afternoon
sessions describe how voice can be packetized on broadband
access and the implications for business customers. Again
all speakers have coordinated their presentations to ensure
a smooth flow.
On Friday we bring together all
these issues with descriptions of case examples showing how
carriers migrated voice from circuit to packet transport in
Who Should Attend:
Service Provider Personnel:
network planners, and those concerned with traffic integration,
and converged networks. Equipment Vendor Personnel: voice
feature and functionality designers, marketing personnel,
sales engineers, traffic integration designers. End Customer
Personnel: data and voice networking managers and engineers.
June 28, 2000
How to Build a Packet
We start the Voice track with
a double length "How to" session: How to Build a
Packet Voice Network. The Softswitch Architecture developed
by the IETF and the ITU and the associated proliferation of
protocols, MEGACO, H.323, SIP, need to be implemented differently
depending on the transport technology, and how integration
with the circuit switched network is to be handled. The session
provides an understanding of the architecture and its advantages,
a comparative evaluation of the alternative protocols, and
a review of implementation alternatives. Last but not least
we see how to make money out of this business by a review
of integrated billing systems.
- What network nodes are required?
- What protocols do they use
to communicate with each other?
- How is this architecture implemented
using different technologies?
- How can a service provider
bill for a diverse range of services?
Vice President, IP Communications
Manager of Marketing
and Field Operations
Cisco Systems, Inc.
How to Fulfill Service
Increasingly customers are insisting
on Service Level Agreements, SLAs, relating to their telecommunication
services. SLAs contain a mass of detail on how a service provider
should serve a customer, and are particularly important for
voice services to dispell any concerns that packet transport
is not up to the standards of the PSTN. This session focuses
on those aspects of a SLA, that can be provided by the technology:
specifically QoS specifications relating to errors and delay
introduced by the network; plus reliability specifications
relating to percentage down time.
- Can a customer and a service
provider be assured of toll quality voice over a packet
- What are the relative advantages
of IP and ATM in achieving toll quality?
- What is the benefit of Layer
7 switching for voice?
Founder & CTO
Product Manager for Voice
Director of Business Development
Director of Product Marketing
Top Layer Networks
CTO & Cofounder
Director of Business