Lesson
13: Voice Technology Basics
Convergence
of Voice and Data | Voice
Technology Basics | Voice
over Data Transports | Applications
|
Sample Migration
Sample Migration
PBX Networking to New Voice Networking
The next slides graphically illustrate the
migration from traditional circuit-switched voice networking
to the new packet-switched integrated data/voice/video networking.
Here you see two offices… one in Vancouver and one in
Toronto. Each has a PBX to handle the office but all calls
inter-office go through the PSTN.
By adding voice-capable routers to the existing
data network, connecting them to the existing PBXs, the company
can first do toll bypass. This represents bandwidth no longer
needed for voice traffic that is now going through the routers.
The PBX tie line also goes away now that
its function has been replaced by a path between the voice-capable
routers.
You can see here the end result. A much simplified
network and considerable cost savings.
- Summary -
As we have seen today, companies are interested
in data/voice/video integration for very basic business reasons:
Reduce costs: Phone toll charges;
cost of multiple management methods and multiple types of
expertise required to support multiple types of networks;
capital expenditures on multiple networks
Enable the new applications needed for business growth:
Multimedia (data/voice/video) applications require technologies
based on multimedia standards
Simplify network design: Through strategic convergence
of data, voice, and video networks
And decision-makers have come to the conclusion that recent
technical advancements have brought the benefits of voice/data
integration within reach, such as: H.323 standards; gateways;
voice-compression, silence-suppression, and quality-of-service
technologies.
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