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This section provides information on configuration options specific to ICA
connections. For information on other connection options, see the Citrix
Connection Configuration online help.
ICA network, asynchronous modem, and asynchronous serial null modem cable
connections each have different configuration options available. You can modify
the configuration of a new network or asynchronous connection in the New
Connection dialog box. To modify the configuration of an existing connection,
double-click the connection in the Citrix Connection Configuration window.

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You can configure asynchronous ICA connections to hang up and dial a preset or
user-specified number after a user logs on to the MetaFrame server. Modem
callback options are specified in the Async Transport Configuration of an
asynchronous connection or in User Manager for Domains if the inherit user
configuration check box is selected.
If Modem Callback is set to a fixed phone number, the specified telephone
number is always used. If the inherit user config check box is selected for Phone
number, the number specified in the User Configuration dialog box in User
Manager for Domains is used. You can use a fixed phone number and specify the
home phone number of each user to ensure that any Dial-In connections are
originating from the user’s location.
If Modem Callback is set to a roving phone number, the user is prompted to
enter a callback number when he or she starts an async session. The number
specified in the User Configuration dialog box in User Manager or Citrix
Connection Configuration is used as the default. You can configure callback to a
roving phone number to centralize telephone charges.