H1 System Settings

The H1 system parameters represent the operating parameters of layer 4. The settings should only be changed in special cases. Please contact your system administrator before you make any changes to these settings.

The dialog box provides the following settings.

Connect Request Time Interval (fast)

This parameter specifies the time interval between two Connect Request attempts if the connection cannot be established. After the maximum number of fast CRs is reached, the slow CR time interval will be used.

Connect Request Time Interval (slow)

Here you specify the time interval between two Connect Request attempts if the connection cannot be established and the maximum number of fast CRs has been exceeded.

Number of Fast CRs

Here you define after how many failed Connect Request attempts the time interval between the attempts is increased so that the attempts are performed less frequently. This reduces the network load caused by unsuccessful attempts to establish connections. Whenever an established connection is closed, the system tries to reconnect.

Time Between Send Retries

Time interval after which a frame is retransmitted.

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.

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.