When you use a modem (internal or external) or an external Integrated Services Digital Network (ISDN) terminal adapter to connect over a telephone line, select the switched line connection.
The switched line connection type has the following operating modes:
Choose this operating mode to enable a remote system to dial into the system.
Choose this operating mode to enable the system to dial out to a remote system.
Choose this operating mode to enable the system to automatically dial out to a remote system when TCP/IP traffic for the remote system is detected on the system. The connection ends when the data transmission is complete, and no TCP/IP traffic occurs for a specific period of time.
Choose this operating mode to enable the system to answer calls from a dedicated remote system. This operating mode also allows the system to call the remote system when TCP/IP traffic for the remote system is detected. If both systems use i5/OS® operating system and use this operating mode, TCP/IP traffic flows between the two systems on demand and without the need for a permanent physical connection. This operating mode requires a dedicated resource. The remote peer must dial in for the operating mode to function properly.
Choose this operating mode to enable a remote system to be dialed or answered. To handle incoming calls, reference an existing answer profile from a Point-to-Point Protocol (PPP) connection profile that specifies this operating mode. This enables one answer profile to handle all incoming calls from one or more remote peers and a separate dial on-demand profile for each outgoing call. This operating mode does not require a dedicated resource to handle the incoming calls from remote peers.