Connection equipment

iSeries™ servers use modems, ISDN terminal adapters, token-ring adapters, Ethernet adapters or CSU/DSU devices to handle PPP connections.

These are the three kinds of communication equipment that you can use with your PPP environment.

• Modems
• CSU/DSU
• ISDN terminal adapters
• Ethernet adapters (for PPPoE connections)

• Modems
  Both external and internal modems can be used for PPP connections.
• CSU/DSU
  A Channel Service Unit (CSU) is a device that connects a terminal to a digital line. A Data Service Unit (DSU) is a device that performs protective and diagnostic functions for a telecommunications line. Typically, the two devices are packaged as a single unit, CSU/DSU.
• ISDN terminal adapters
  ISDN provides you with a digital connection that allows you to communicate by using any combination of voice, data, and video, among other multimedia applications.