diff --git a/tests/dtx/dtx_gsm0503_test.ok b/tests/dtx/dtx_gsm0503_test.ok
new file mode 100644
index 0000000..a95a18b
--- /dev/null
+++ b/tests/dtx/dtx_gsm0503_test.ok
@@ -0,0 +1,11 @@
+FR AMR DTX FRAMES:
+ ==> AFS_SID_FIRST, n_errors=0, n_bits_total=212
+ ==> AFS_SID_UPDATE, n_errors=0, n_bits_total=212
+ ==> AFS_ONSET, n_errors=0, n_bits_total=228
+HR AMR DTX FRAMES:
+ ==> AHS_SID_UPDATE, n_errors=0, n_bits_total=212
+ ==> AHS_SID_FIRST_P1, n_errors=0, n_bits_total=212
+ ==> AHS_SID_FIRST_P2, n_errors=0, n_bits_total=114
+ ==> AHS_ONSET, n_errors=0, n_bits_total=114
+ ==> AHS_SID_FIRST_INH, n_errors=0, n_bits_total=212
+ ==> AHS_SID_UPDATE_INH, n_errors=0, n_bits_total=212