diff --git a/tests/gsm0808/gsm0808_test.ok b/tests/gsm0808/gsm0808_test.ok
index dc1deba..58bc509 100644
--- a/tests/gsm0808/gsm0808_test.ok
+++ b/tests/gsm0808/gsm0808_test.ok
@@ -299,4 +299,137 @@
 Result (hr):
  S15-S0 = 073f = 0b0000011100111111
 
+Testing gsm48_mr_cfg_from_gsm0808_sc_cfg():
+Input:
+ S15-S0 = ff03 = 0b1111111100000011
+Output:
+ m4_75= 1   smod=  0
+ m5_15= 1   spare= 0
+ m5_90= 0   icmi=  1
+ m6_70= 0   nscb=  0
+ m7_40= 0   ver=   1
+ m7_95= 0
+ m10_2= 0
+ m12_2= 0
+
+Input:
+ S15-S0 = 0000 = 0b0000000000000000
+Output:
+ m4_75= 0   smod=  0
+ m5_15= 1   spare= 0
+ m5_90= 0   icmi=  1
+ m6_70= 0   nscb=  0
+ m7_40= 0   ver=   1
+ m7_95= 0
+ m10_2= 0
+ m12_2= 0
+
+Input:
+ S15-S0 = ff06 = 0b1111111100000110
+Output:
+ m4_75= 0   smod=  0
+ m5_15= 1   spare= 0
+ m5_90= 1   icmi=  1
+ m6_70= 0   nscb=  0
+ m7_40= 0   ver=   1
+ m7_95= 0
+ m10_2= 0
+ m12_2= 0
+
+Input:
+ S15-S0 = 3e08 = 0b0011111000001000
+Output:
+ m4_75= 0   smod=  0
+ m5_15= 1   spare= 0
+ m5_90= 0   icmi=  1
+ m6_70= 1   nscb=  0
+ m7_40= 0   ver=   1
+ m7_95= 0
+ m10_2= 0
+ m12_2= 0
+
+Input:
+ S15-S0 = 0c12 = 0b0000110000010010
+Output:
+ m4_75= 0   smod=  0
+ m5_15= 1   spare= 0
+ m5_90= 0   icmi=  1
+ m6_70= 0   nscb=  0
+ m7_40= 1   ver=   1
+ m7_95= 0
+ m10_2= 0
+ m12_2= 0
+
+Input:
+ S15-S0 = c020 = 0b1100000000100000
+Output:
+ m4_75= 0   smod=  0
+ m5_15= 1   spare= 0
+ m5_90= 0   icmi=  1
+ m6_70= 0   nscb=  0
+ m7_40= 0   ver=   1
+ m7_95= 1
+ m10_2= 0
+ m12_2= 0
+
+Input:
+ S15-S0 = 3040 = 0b0011000001000000
+Output:
+ m4_75= 0   smod=  0
+ m5_15= 1   spare= 0
+ m5_90= 0   icmi=  1
+ m6_70= 0   nscb=  0
+ m7_40= 0   ver=   1
+ m7_95= 0
+ m10_2= 1
+ m12_2= 0
+
+Input:
+ S15-S0 = c082 = 0b1100000010000010
+Output:
+ m4_75= 0   smod=  0
+ m5_15= 1   spare= 0
+ m5_90= 0   icmi=  1
+ m6_70= 0   nscb=  0
+ m7_40= 0   ver=   1
+ m7_95= 0
+ m10_2= 0
+ m12_2= 1
+
+Input:
+ S15-S0 = ff4b = 0b1111111101001011
+Output:
+ m4_75= 1   smod=  0
+ m5_15= 1   spare= 0
+ m5_90= 0   icmi=  1
+ m6_70= 1   nscb=  0
+ m7_40= 0   ver=   1
+ m7_95= 0
+ m10_2= 1
+ m12_2= 0
+
+Input:
+ S15-S0 = fcd2 = 0b1111110011010010
+Output:
+ m4_75= 0   smod=  0
+ m5_15= 1   spare= 0
+ m5_90= 0   icmi=  1
+ m6_70= 0   nscb=  0
+ m7_40= 1   ver=   1
+ m7_95= 0
+ m10_2= 1
+ m12_2= 1
+
+Input:
+ S15-S0 = c0a2 = 0b1100000010100010
+Output:
+ m4_75= 0   smod=  0
+ m5_15= 1   spare= 0
+ m5_90= 0   icmi=  1
+ m6_70= 0   nscb=  0
+ m7_40= 0   ver=   1
+ m7_95= 1
+ m10_2= 0
+ m12_2= 1
+
 Done