
Chapter 4. Your Internet Service Provider (ISP)
4.3.3. Ordering a dialup connection
It is typical for you to purchase and install your own modem or ISDN adapter for your dialup connection. (Be sure to use a Linux-compatible
modem - WinModems will not work.) Your modem connects to your ISP over a conventional phone line. If you require an additional phone line, it is
typical for you to arrange that yourself.
Your ISDN adapter will connect to the ISDN connection installed by your ISP or local telecommunications provider. The software can work with
external ISDN adapters and includes support for passive ISDN cards.
Warning
While the software includes experimental support for ISDN cards, we do not provide technical support for the use of these cards as they
have not yet been tested in a wide enough variety of environments.
There are two possible configurations with dialup service:
1. Your ISP is able to meet all of the following three conditions:
• you receive a routable, static IP address
• your ISP will provide a secondary mail server for your domain, which receives e-mail when your server is not connected.
• your ISP is able to accept the "ETRN command". (This command is used by the server to retrieve the mail held by the ISP’s secondary mail
server.)
Information provided to you by your ISP:
• static IP address
• dialup access number
• dialup account name
• dialup account password
Order services from: Service List C
2. Your ISP is unable to meet all three of the above conditions
Information provided to you by your ISP:
• dialup access number
• dialup account name
• dialup account password
Order services from: Service List D
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