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- <H1>Integrated Services Digital Network</H1>
- <P>
- The Integrated Services Digital Network is a telephone signaling standard
- that uses digital signaling over a standard telephone network, allowing
- computers to communicate over a telephone connection. If your Internet Gateway
- system contains ISDN hardware, you can use it to connect to other ISDN
- host, such as a host maintained by your Internet service provider.
- ISDN service is provided by a local telephone company, which issues the
- telephone numbers that are used in host connections.
- <P>
- When an ISDN host places a call to another system, the connection request
- must contain information about telephone company switching equipment.
- Since different types of equipment requires different information, the
- telephone company supplies this information when you request ISDN
- service. You will be required to supply information about switching
- when you configure ISDN software.
- <P>
- The ISDN network interface on the Internet Gateway system supports three
- channels: two B channels for circuit switched data (with a 64 KB transfer
- rate), and a D channel for standard signaling (with a 16 KB transfer rate).
- The telephone number applied to the entire connection, however, some switches
- maintain a line identifier for each B channels in addition to the local
- telephone number.
- <P>
- Use the <A HREF="index.isdn1.shtml" TARGET="left">ISDN Setup</A>
- form to configure the ISDN interface on your Internet Gateway system.
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