# OTAA ok, 12h later I get denied, reboot gateway --\> OK again ...!? **URL:** \ **Category:** End Devices (Nodes)\ **Created:** [May 3, 2016, 3:17pm UTC](https://www.thethingsnetwork.org/forum/t/otaa-ok-12h-later-i-get-denied-reboot-gateway-ok-again/2025 "2016-05-03T15:17:35Z")\ **Posts on this page:** 1\ **Showing post:** 32
**Author:** ![kersing](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/kersing/32/44777_2.png) [@kersing](https://www.thethingsnetwork.org/forum/u/kersing)\ **Post date:** [January 24, 2017, 6:07pm UTC](https://www.thethingsnetwork.org/forum/t/otaa-ok-12h-later-i-get-denied-reboot-gateway-ok-again/2025/32 "2017-01-24T18:07:33Z")
> [@salvatore\_forte](#): > > the two pictures above are referred to an unsuccessful join attempt! Ok, looked at the screenshots again, the issue you are having is timing related. The packet at 11:49:26.3… should have been sent by the gateway exactly 5 seconds after the packet of 11:49:20.8 arrived. The time between the sending the first and receiving the second packet exceeds 5 seconds so the gateway receives the data after it should have been transmitted. As a result the node will never receive the data at the time it expects it and the join fails. Looking at the ‘PULL\_ACK’ lines in the second screen shot I notice the turn around times vary wildly and are rather large. For my gateways the results are 20-40ms, your results are 240-882ms. The lower value might work, the high value is too large. --- _[View the full topic](https://www.thethingsnetwork.org/forum/t/otaa-ok-12h-later-i-get-denied-reboot-gateway-ok-again/2025)._