Example #1:
A Research Scholar or Professor comes to Temple University for two years, and returns home for two months. Her SEVIS record is maintained during her absence. After two months, s/he then returns to Temple University. In this case, s/he will have two years and ten months left in her J program. In other words, the two months outside of the U.S. counts toward the total five-year period. Read more here.
Example #2:
A Research Scholar or Professor comes to TU for two years and returns home without remaining active on the current J program. While at home, the scholar and the TU department decide there is more work to be done and the department asks the J-1 to return to TU as a Research Scholar or Professor. In this case, the scholar is subject to the 24 month bar because the SEVIS record did not remain active. Therefore, the J-1 is prohibited from returning to the U.S. in the Research Scholar or Professor categories for two years following the completion date of the J program. For this scholar, other visa types or J categories may be an option. The scholar may not return as a Short Term Scholar as that could be construed as an attempt to circumvent the twenty-four month bar.
Example #3:
A Research Scholar or Professor comes to TU for a one year appointment but for personal reasons, decides to end the program early after one week. This individual would need to wait 24 months before being able to return to the US on a J-1 Visa.