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If you have several modems and telephone lines or several ISDN channels available on your system, you can configure PPP to allow access using more than one device per PPP link. This facility is known as ``multilink'' PPP. It increases the amount of data that can be sent and received per second by sending and receiving data packets in parallel over the available telephone lines. To use this facility, the incoming user must use PPP software that supports multilink PPP. SCO multilink PPP supports bandwidth on demand. It adds and removes links from the multilink bundle as network traffic increases and decreases.
If you want to set up PPP over dedicated serial lines, or to fine tune PPP for features such as bandwidth on demand or protocol configuration, you must use the PPP Manager directly. See ``The PPP Manager interface'' for more information.
For information about troubleshooting problems with PPP links, see ``Troubleshooting PPP links''.