Avaya 38DHB0002UKDD manual Appendix A: General Information, Internet Access

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Appendix A: General Information

Appendix A: General Information

Internet Access - Page 109

Appendix A: General Information

Internet Access

Internet access offers a number of business benefits - email and the exchange of multimedia information, access to all kinds of services and information, and the opportunity to create a global presence with your own web site. The role of your system in providing Internet Access is shown in the diagram below. The Internet Service Provider (ISP) provides you with a gateway to the global network which is the Internet. The ISP has:

a Remote Access Server (RAS), for you to dial in to

a Domain Name Server (DNS), which converts your “public” name (e.g., www.Avaya.com) into the unique Internet Protocol (IP) address by which you are recognised on the global network

a Mail Server, for collection and delivery of your mail

a Web server, to provide you with space for your own web pages

switches and routers - the equivalent of the Internet’s telephone exchanges - which send and receive data packets across the network. The Internet itself is like a mesh with these devices at each of its nodes.

You can access the Internet in two ways:

By dialling in via the public phone network (the usual method) or

Over a permanent leased line (the IPNC can support this by means of its Wide Area Network (WAN) port).

For ISDN dial-in Internet access, your system has a “bandwidth on demand” facility, that uses additional ISDN channels when and if they are needed. This is very cost-effective way to manage call costs as there is no wastage and also no restriction on user access. By means of Network Address Translation (NAT), many users can access the Internet at the same time.

When you set up an account with an ISP, you are given the details you need to set up your system for Internet access. One Internet service is set up as part of the basic configuration and you may add others as new Services (see Data Routing below).

The World Wide Web (WWW) is the user interface to Internet services and information. To access this, you need a browser, such as Netscape. You also need a search engine, such as Yahoo, to look for information when you have not been given a specific address. These applications are installed on PC’s for users with Internet access. To use email, you need an email server on your Local Area Network (LAN) and the corresponding software on each user’s PC for mail collection.

INDeX IPNC Cassette Administration Manual

Appendix A: General Information - Page 109

38DHB0002UKDD – Issue 7 (22/11/02)

Internet Access

Page 109
Image 109
Avaya 38DHB0002UKDD manual Appendix A: General Information, Internet Access