Lexmark TN3270E 用户手册

This Connection# > Server# Info option specifies the time in sec-
onds that expires between each keep alive signal sent to the host. 
The 

 setting specifies the type of signal sent to the 

host.

Set this option to as big a value as possible. Be 
sure it is smaller than the session’s inactivity 
timeout value defined on the host. This will help 
minimize network traffic.

If the 

 signal setting is set to None, this option value 

setting is ignored. If Telnet NOP or Timing Mark was selected, set 
this option value to a value less than the 

INACTTIMO

 value on the 

host.

The range is 1 to 32000 seconds.