rtp2trau_hr16: fix UFE bit setting

Per TS 48.061 section 5.1.4.1.1, UFE=1 means UL was good and UFE=0
means UL was bad.  In the absence of logic that reports the actual
state of UL, we need to tell the BTS that UL was good (like we do
for FR & EFR) - hence set UFE=1.

Change-Id: Ibeb8db332f2e20806bebb077844a509064b2d89d
---
M src/trau/trau_rtp_conv.c
1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/src/trau/trau_rtp_conv.c b/src/trau/trau_rtp_conv.c
index 5c87c46..c70736d 100644
--- a/src/trau/trau_rtp_conv.c
+++ b/src/trau/trau_rtp_conv.c
@@ -407,7 +407,7 @@
 		tf->c_bits[15] = 0; /* C16: SP */
 		tf->c_bits[16] = 0; /* C17: DTXd shall not be applied */
 	} else {
-		tf->c_bits[11] = 0; /* C12: UFE */
+		tf->c_bits[11] = 1; /* C12: UFE */
 		tf->c_bits[12] = 1; /* C13: spare */
 		tf->c_bits[13] = 1; /* C14: spare */
 		tf->c_bits[14] = 1; /* C15: spare */

