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Time Until Connection Is Lost
Specifies the time after which a connection error is detected if the partner station no longer sends
any frames. When this timeout expires, the connection has to be reestablished.
Timeout Between the Acknowledges
Specifies the time after which an acknowledgment is to be sent if no data traffic is taking place.
Maximum Credit
This parameter specifies how many frames the connection can buffer. With H1, this is usually 1.
Maximum Frame Length
Specifies the maximum length of a frame. The value is a power of two.
Class Options
The description for this parameter is provided in the OSI standard specification sheets.
Protocol Options
The description for this parameter is provided in the OSI standard specification sheets.
Timeout Wait
Not relevant for echo devices. (-1 is forever or until finished).
OK
The dialog box is closed and the data is applied.
Cancel
The dialog box is closed without applying the data.
Default
Resets all the input fields to the defaults.
9.5.2 TCP/IP System Settings
The TCP/IP system parameters represent the operating parameters in the TCP/IP core. The settings
should only be changed in special cases. Please contact your system administrator before you
make any changes to the settings.
Connect Request Time Interval (fast)
Short time interval between two CRs (Connect Requests).
The short time interval is used until the value set under Number of Fast CRs is reached.
Connect Request Time Interval (slow)
Long time interval between two CRs (Connect Requests). The long time interval is used after the
value set under Number of Fast CRs was reached. This reduces the frequency of Connect Request
attempts.
Number of Fast CRs
Specifies after how many failed Connect Request attempts the time interval between the attempts is
increased so that the attempts are performed less frequently. As soon as the value specified here is
reached, the Connect Request Time Interval (slow) is used between two Connect Request attempts.
This allows reducing the network load.
Time Until Connection Is Lost
Time without data communication after which the connection is considered broken. Since TCP/IP as
a WAN protocol normally does not use life acks, the connection is also broken if no data has been
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