Paradyne CSU, DSU, 9126-II, 9128-II Configuring the Modem Port, 100, Communication Port Options 5

4. Configuration Options

Table 4-24. Communication Port Options (5 of 5)

Link Protocol

Possible Settings: PPP, SLIP

Default Setting: PPP

Specifies the link-layer protocol to be used. Only in effect when the COM port is configured as a network communication link (Port Use option is set to Net Link).

Display Conditions – This option only appears when Port Use is set to Net Link.

PPP– Point-to-Point Protocol.

SLIP – Serial-Line Internet Protocol.

Configuring the Modem Port

Select Modem Port from the Management and Communication menu to configure the modem port (seeTable 4-25, Modem Port Options).

Main Menu → Configuration → Management and Communication →

Modem Port

Table 4-25. Modem Port Options (1 of 4)

Port Use

Possible Settings: Terminal, Net Link

Default Setting: Terminal

Assigns a specific use to the modem port.

NOTE: If the Default IP Destination is set to Modem (see Table 4-17, Node IP Options) and you change Port Use to Terminal, the Default IP Destination is forced to None.

Terminal – The modem port is used for the asynchronous terminal connection.

Net Link – The modem port is a network communications link to the IP network. You cannot change Port Use to Net Link when the Modem PassThru feature is enabled. When you try, the Cannot change Port Use – Modem PassThru is enabled message is displayed. See Modem Operation in Chapter 7, Operation and Maintenance, for more information about Modem PassThru operation.

Dial-In Access

Possible Settings: Enable, Disable

Default Setting: Enable

Controls whether external devices can dial-in to the system through the internal modem. This allows dial-in access by a remote terminal when Port Use is set to Terminal. When Port Use is set to Net Link, Dial-In Access must be set to Enable to allow an external NMS to dial in to the device.

Enable – Dial-in access is allowed. Incoming calls are answered.

Disable – Dial-in access is not allowed. Incoming calls are not answered. You cannot disable Dial-In Access when the Modem PassThru feature is enabled. When you try, the Cannot change Dial-In Access when Modem PassThru is enabled message is displayed. See Modem Operation in Chapter 7, Operation and Maintenance, for more information about Modem PassThru operation.

4-100 September 2002 9128-A2-GB20-80