connectTimeout resource

From The x3270 Wiki
Type Default Option: -connecttimeout
integer 0 x3270 c3270 wc3270 s3270 b3270

If non-zero, specifies a timeout, in seconds, that the emulator will wait for a host connection to complete. By default, the timeout will be determined by the operating system.

Note that the emulator will wait for the lesser of these two times (the specified timeout and the system-defined timeout).