911 Call Issue on v81 Firmware

[Chris8792]

We are currently having issues making 911 calls on phones using v81 firmware, but if the calls are made using v80 they are working fine. I have a T46S with 81.0.20 firmware, the S model does not offer firmware other than version 81. Once the G models were downgraded to v80 they were fine. This was also the case on the T41P's. Any ideas of ways to resolve this issue?

Thanks.