VPN
Issue 3.4.1 June 2005
307
For more information, see:
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IP Voice Quality Network Requirements Website
●
IP Voice Quality Document (.PDF)
The following sections cover the topics:
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Convergence advantages
●
Managing IP Telephony VPN issues
●
Conclusion
Convergence advantages
For increasing numbers of enterprises, the VPN carries not only data, but voice
communications. Though voice communication over IP networks (IP Telephony) creates new
quality of service (QoS) and other challenges for network managers, there are compelling
reasons for moving forward with convergence over maintaining a traditional voice and data
infrastructure:
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A converged infrastructure makes it easier to deploy eBusiness applications, such as
customer care applications, that integrate voice, data, and video.
●
Enterprises can reduce network costs by combining disparate network infrastructures, and
eliminating duplicate facilities.
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A converged infrastructure can increase the efficiencies of the IT organization.
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Long distance charges can be reduced by sending voice over IP networks.
Voice over IP VPN is emerging as a viable way to achieve these advantages. The emergence of
public and virtual private IP services promises to make it easier for customers, suppliers, and
businesses to use data networks to carry voice services. As with any powerful new technology,
however, VPNs require skilled management to achieve top performance. The highest network
performance becomes imperative when the VPN network must deliver high-quality voice
communication. Not all IP networks can meet these quality requirements today. For instance,
the public Internet is a transport option for voice communication only when reduced voice
performance is acceptable, and global reach has the highest priority. When high voice quality is
a requirement, ISPs and Network Service Providers (NSPs) can provide other VPN connections
that meet required Service Level Agreements (SLAs).
Managing IP Telephony VPN issues
This section provides information on:
●
Communication security
●
Firewall technologies
●
Network management and outsourcing models
Содержание Application Solutions
Страница 1: ...Avaya Application Solutions IP Telephony Deployment Guide 555 245 600 Issue 3 4 1 June 2005 ...
Страница 20: ...About This Book 20 Avaya Application Solutions IP Telephony Deployment Guide ...
Страница 21: ...Issue 3 4 1 June 2005 21 Section 1 Avaya Application Solutions product guide ...
Страница 22: ...22 Avaya Application Solutions IP Telephony Deployment Guide ...
Страница 74: ...Avaya Application Solutions platforms 74 Avaya Application Solutions IP Telephony Deployment Guide ...
Страница 106: ...Call processing 106 Avaya Application Solutions IP Telephony Deployment Guide ...
Страница 124: ...Avaya LAN switching products 124 Avaya Application Solutions IP Telephony Deployment Guide ...
Страница 139: ...Issue 3 4 1 June 2005 139 Section 2 Deploying IP Telephony ...
Страница 140: ...140 Avaya Application Solutions IP Telephony Deployment Guide ...
Страница 186: ...Traffic engineering 186 Avaya Application Solutions IP Telephony Deployment Guide ...
Страница 204: ...Security 204 Avaya Application Solutions IP Telephony Deployment Guide ...
Страница 214: ...Voice quality network requirements 214 Avaya Application Solutions IP Telephony Deployment Guide ...
Страница 228: ...Avaya Integrated Management 228 Avaya Application Solutions IP Telephony Deployment Guide ...
Страница 239: ...Reliability Issue 3 4 1 June 2005 239 Figure 69 S8700 Media Server in a high reliability configuration ...
Страница 274: ...Reliability and Recovery 274 Avaya Application Solutions IP Telephony Deployment Guide ...
Страница 275: ...Issue 3 4 1 June 2005 275 Section 3 Getting the IP network ready for telephony ...
Страница 276: ...276 Avaya Application Solutions IP Telephony Deployment Guide ...
Страница 350: ...Implementing Communication Manager on a data network 350 Avaya Application Solutions IP Telephony Deployment Guide ...
Страница 356: ...Network recovery 356 Avaya Application Solutions IP Telephony Deployment Guide ...
Страница 366: ...Network assessment offer 366 Avaya Application Solutions IP Telephony Deployment Guide ...
Страница 367: ...Issue 3 4 1 June 2005 367 Appendixes ...
Страница 368: ...Appendixes 368 Avaya Application Solutions IP Telephony Deployment Guide ...
Страница 394: ...Access list 394 Avaya Application Solutions IP Telephony Deployment Guide ...
Страница 414: ...DHCP TFTP 414 Avaya Application Solutions IP Telephony Deployment Guide ...