wdisp/info_timeout is a SAP Parameter attribute which is used to control Time allowed for Web Dispatcher configuration requests and ping reques information. This is available within R/3 SAP systems depending on the version and release level.
Below is the standard documentation available and a few details of the attributes values .
Timeout for retrieving configuration data in the application servers. If
the Web Dispatcher receives no response within this time, it asks the
next server.
The parameter also defines the timeout for the ping requests to the
application servers.
See SAP Parameter Documentation for full SAP documentation for this profile parameter.