This Integer32 (0..10000), in seconds, sets the critical timer used with digit-map mid-call DTMF reporting, starting when the last digit needed for a match is received (or immediately if used without a digit map), after which the digit-map match is assumed complete. This determines how long the gateway waits after receiving what looks like a complete digit sequence before finalizing the match, affecting how responsive mid-call feature signaling feels to the user. For instance, an admin fine-tuning mid-call DTMF responsiveness would lower vismDsx1MidcallTcrit if users experience a noticeable delay after entering the last digit of a feature code.