### Description
BYE requests received after 4 minutes are failing with 481
### Troubleshooting
#### Reproduction
<!-- If the issue can be reproduced, describe how it can be done. -->
#### Debugging Data
Seems like REDIS is set to expire the leg infomartion after 3 minutes. Not sure where / why this is the case.
``` T 2019/02/11 16:49:55.818935 137.54.60.160:58580 -> 137.54.2.161:6379 [AP] *3..$6..EXPIRE..$26..d:z:atpsh-5c3d1562-16-cf25..$5..10800.. # T 2019/02/11 16:50:21.325761 137.54.60.160:58580 -> 137.54.2.161:6379 [AP] *3..$6..EXPIRE..$26..d:z:atpsh-5c3d1562-16-df25..$5..10800.. # T 2019/02/11 16:50:26.582118 137.54.60.160:58574 -> 137.54.2.161:6379 [AP] *3..$6..EXPIRE..$26..d:z:atpsh-5c3d1562-16-df25..$3..180.. # T 2019/02/11 16:50:43.299621 137.54.60.160:58574 -> 137.54.2.161:6379 [AP] *3..$6..EXPIRE..$26..d:z:atpsh-5c3d1562-16-df25..$3..180.. # ```
I will troubleshoot this further.