Avaya IP Office 8.1, Описание продукта

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Product Description
IP Office 8.1 © 2012 AVAYA All rights reserved.
Page 293
Issue 26.k.- (16 August 2012)
10. Data Networking Services
LAN/WAN Services
The IP500 V2 supports a firewalled 2 port Layer 3 Ethernet Switch.
When computers on the LAN communicate they do not care where the destination is, they just send messages
with the address of the destination. These messages are likely to be received at all other computers on the
same network but only one – the target destination – will act on the message. Where the destination is on
another network, the router is needed to be the "gateway" to the rest of the world and find the optimum route
to send the message on to the destination. The router alleviates the need to establish and hold a call for the
duration of a communication session (when messages or IP packets are being sent between source and
destination) by automatically establishing a connection only when data is to be passed. Routers may be
connected together using WAN (Wide Area Network) links that could be point-to-point leased lines, managed IP
networks, Frame Relay networks or exchange lines (Central Office). The IP Office system supports all of these
types of network connections.
IP Office has an integral router with support for bandwidth on demand that allows the negotiation of extra
bandwidth dynamically over time. Where connection is over ISDN, IP Office initiates extra data connections
between sites only when there is data to be sent or sufficient data to warrant additional channels. It then drops
the extra channels when they are no longer needed. The calls are made automatically, without the users being
aware of when calls begin or end. The rules for making calls, how long to keep calls up etc, are configurable
within IP Office.
It is possible to have several different routing destinations or paths active at any time linking the office to other
offices and the Internet simultaneously.
Internet Access
While the telephone is still the number one business communication tool, Internet access is becoming
increasingly important for business-to-business communications. The ability to send and receive email, is now
considered mandatory when dealing with many suppliers and customers, while access to the Internet for e-
commerce applications and information has become vital.
IP Office systems provide shared, secure, high-speed access to the Internet via exchange lines (Central Office),
digital leased line or IP VPN services.
Internet security concerns are addressed through the provision of an integrated firewall so removing the need
for a standalone firewall. The firewall can be configured to cater for a variety of situations and will allow
customers to control who can access external resources and when. The firewall isolates your private networks
from the Internet, thereby ensuring that your network remains beyond the reach of hackers, while configurable
service quotas can be set against a remote access service to ensure authorized users can gain access. Service
Quotas place a time limit on outgoing calls to a particular IP Service so limiting costs. Each service can be
configured with an alternative fall back, for example, you may wish to connect to your ISP during working hours
and at other times take advantage of varying call charges from an alternative ISP. You could, therefore, set up
one service to connect during peak times and another to act as fallback during the cheaper period.
Internet Access