Perle Systems Iolan Sds4 Hl Device Server 4030370 User Manual

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Advanced

Advanced serial port settings apply to all serial ports. 

Configure the following parameters:

Enables/disables proprietary inband SSH break signal processing, the Telnet 

break signal, and the out-of-band break signals for TruePort.
Default: Disabled

When enabled, deletes any pending outbound data when a port is closed.
Default: Disabled

Allows only one network connection at a time per a serial port. Application 

accessing a serial port device across a network with get a connection (socket) 

refused until:

z

All data from previous connections on that serial port has drained

z

There are no other connections

z

Up to a 1 second interconnection poll timer has expired

Enabling this feature automatically enables a TCP keepalive mechanism which 

is used to detect when a session has abnormally terminated. The keepalive is 

sent after 3 minutes of network connection idle time.
Applications using this feature need to be aware that there can be some 

considerable delay between a network disconnection and the port being 

available for the next connection attempt, allowing any data sent on prior 
connections to be transmitted out of the serial port. Application network retry 

logic needs to accommodate this feature. 
Default: Disabled