diff --git a/mbus/mbus-protocol-aux.c b/mbus/mbus-protocol-aux.c
index 0792598..57758eb 100755
--- a/mbus/mbus-protocol-aux.c
+++ b/mbus/mbus-protocol-aux.c
@@ -150,17 +150,17 @@ mbus_variable_vif vif_table[] = {
     { 0x56, 1.0e3,  "kg/h", "Mass flow" },
     { 0x57, 1.0e4,  "kg/h", "Mass flow" },
 
-    /* E101 10nn     Flow Temperature �C (0.001�C to 1�C) */
-    { 0x58, 1.0e-3, "�C", "Flow temperature" },
-    { 0x59, 1.0e-2, "�C", "Flow temperature" },
-    { 0x5A, 1.0e-1, "�C", "Flow temperature" },
-    { 0x5B, 1.0e0,  "�C", "Flow temperature" },
+    /* E101 10nn     Flow Temperature °C (0.001°C to 1°C) */
+    { 0x58, 1.0e-3, "°C", "Flow temperature" },
+    { 0x59, 1.0e-2, "°C", "Flow temperature" },
+    { 0x5A, 1.0e-1, "°C", "Flow temperature" },
+    { 0x5B, 1.0e0,  "°C", "Flow temperature" },
 
-    /* E101 11nn Return Temperature �C (0.001�C to 1�C) */
-    { 0x5C, 1.0e-3, "�C", "Return temperature" },
-    { 0x5D, 1.0e-2, "�C", "Return temperature" },
-    { 0x5E, 1.0e-1, "�C", "Return temperature" },
-    { 0x5F, 1.0e0,  "�C", "Return temperature" },
+    /* E101 11nn Return Temperature °C (0.001°C to 1°C) */
+    { 0x5C, 1.0e-3, "°C", "Return temperature" },
+    { 0x5D, 1.0e-2, "°C", "Return temperature" },
+    { 0x5E, 1.0e-1, "°C", "Return temperature" },
+    { 0x5F, 1.0e0,  "°C", "Return temperature" },
 
     /* E110 00nn    Temperature Difference  K   (mK to  K) */
     { 0x60, 1.0e-3, "K", "Temperature difference" },
@@ -168,11 +168,11 @@ mbus_variable_vif vif_table[] = {
     { 0x62, 1.0e-1, "K", "Temperature difference" },
     { 0x63, 1.0e0,  "K", "Temperature difference" },
 
-    /* E110 01nn     External Temperature �C (0.001�C to 1�C) */
-    { 0x64, 1.0e-3, "�C", "External temperature" },
-    { 0x65, 1.0e-2, "�C", "External temperature" },
-    { 0x66, 1.0e-1, "�C", "External temperature" },
-    { 0x67, 1.0e0,  "�C", "External temperature" },
+    /* E110 01nn     External Temperature °C (0.001°C to 1°C) */
+    { 0x64, 1.0e-3, "°C", "External temperature" },
+    { 0x65, 1.0e-2, "°C", "External temperature" },
+    { 0x66, 1.0e-1, "°C", "External temperature" },
+    { 0x67, 1.0e0,  "°C", "External temperature" },
 
     /* E110 10nn     Pressure bar (1mbar to 1000mbar) */
     { 0x68, 1.0e-3, "bar", "Pressure" },
@@ -564,29 +564,29 @@ mbus_variable_vif vif_table[] = {
     { 0x236, 1.0e0, "Reserved", "Reserved" },
     { 0x237, 1.0e0, "Reserved", "Reserved" },
 
-    /* E101 10nn Flow Temperature 10(nn-3) �F 0.001�F to 1�F */
-    { 0x238, 1.0e-3, "�F", "Flow temperature" },
-    { 0x239, 1.0e-2, "�F", "Flow temperature" },
-    { 0x23A, 1.0e-1, "�F", "Flow temperature" },
-    { 0x23B, 1.0e0,  "�F", "Flow temperature" },
+    /* E101 10nn Flow Temperature 10(nn-3) °F 0.001°F to 1°F */
+    { 0x238, 1.0e-3, "°F", "Flow temperature" },
+    { 0x239, 1.0e-2, "°F", "Flow temperature" },
+    { 0x23A, 1.0e-1, "°F", "Flow temperature" },
+    { 0x23B, 1.0e0,  "°F", "Flow temperature" },
 
-    /* E101 11nn Return Temperature 10(nn-3) �F 0.001�F to 1�F */
-    { 0x23C, 1.0e-3, "�F", "Return temperature" },
-    { 0x23D, 1.0e-2, "�F", "Return temperature" },
-    { 0x23E, 1.0e-1, "�F", "Return temperature" },
-    { 0x23F, 1.0e0,  "�F", "Return temperature" },
+    /* E101 11nn Return Temperature 10(nn-3) °F 0.001°F to 1°F */
+    { 0x23C, 1.0e-3, "°F", "Return temperature" },
+    { 0x23D, 1.0e-2, "°F", "Return temperature" },
+    { 0x23E, 1.0e-1, "°F", "Return temperature" },
+    { 0x23F, 1.0e0,  "°F", "Return temperature" },
 
-    /* E110 00nn Temperature Difference 10(nn-3) �F 0.001�F to 1�F */
-    { 0x240, 1.0e-3, "�F", "Temperature difference" },
-    { 0x241, 1.0e-2, "�F", "Temperature difference" },
-    { 0x242, 1.0e-1, "�F", "Temperature difference" },
-    { 0x243, 1.0e0,  "�F", "Temperature difference" },
+    /* E110 00nn Temperature Difference 10(nn-3) °F 0.001°F to 1°F */
+    { 0x240, 1.0e-3, "°F", "Temperature difference" },
+    { 0x241, 1.0e-2, "°F", "Temperature difference" },
+    { 0x242, 1.0e-1, "°F", "Temperature difference" },
+    { 0x243, 1.0e0,  "°F", "Temperature difference" },
 
-    /* E110 01nn External Temperature 10(nn-3) �F 0.001�F to 1�F */
-    { 0x244, 1.0e-3, "�F", "External temperature" },
-    { 0x245, 1.0e-2, "�F", "External temperature" },
-    { 0x246, 1.0e-1, "�F", "External temperature" },
-    { 0x247, 1.0e0,  "�F", "External temperature" },
+    /* E110 01nn External Temperature 10(nn-3) °F 0.001°F to 1°F */
+    { 0x244, 1.0e-3, "°F", "External temperature" },
+    { 0x245, 1.0e-2, "°F", "External temperature" },
+    { 0x246, 1.0e-1, "°F", "External temperature" },
+    { 0x247, 1.0e0,  "°F", "External temperature" },
 
     /* E110 1nnn Reserved */
     { 0x248, 1.0e0, "Reserved", "Reserved" },
@@ -598,19 +598,19 @@ mbus_variable_vif vif_table[] = {
     { 0x24E, 1.0e0, "Reserved", "Reserved" },
     { 0x24F, 1.0e0, "Reserved", "Reserved" },
 
-    /* E111 00nn Cold / Warm Temperature Limit 10(nn-3) �F 0.001�F to 1�F */
-    { 0x250, 1.0e-3, "�F", "Cold / Warm Temperature Limit" },
-    { 0x251, 1.0e-2, "�F", "Cold / Warm Temperature Limit" },
-    { 0x252, 1.0e-1, "�F", "Cold / Warm Temperature Limit" },
-    { 0x253, 1.0e0,  "�F", "Cold / Warm Temperature Limit" },
+    /* E111 00nn Cold / Warm Temperature Limit 10(nn-3) °F 0.001°F to 1°F */
+    { 0x250, 1.0e-3, "°F", "Cold / Warm Temperature Limit" },
+    { 0x251, 1.0e-2, "°F", "Cold / Warm Temperature Limit" },
+    { 0x252, 1.0e-1, "°F", "Cold / Warm Temperature Limit" },
+    { 0x253, 1.0e0,  "°F", "Cold / Warm Temperature Limit" },
 
-    /* E111 01nn Cold / Warm Temperature Limit 10(nn-3) �C 0.001�C to 1�C */
-    { 0x254, 1.0e-3, "�C", "Cold / Warm Temperature Limit" },
-    { 0x255, 1.0e-2, "�C", "Cold / Warm Temperature Limit" },
-    { 0x256, 1.0e-1, "�C", "Cold / Warm Temperature Limit" },
-    { 0x257, 1.0e0,  "�C", "Cold / Warm Temperature Limit" },
+    /* E111 01nn Cold / Warm Temperature Limit 10(nn-3) °C 0.001°C to 1°C */
+    { 0x254, 1.0e-3, "°C", "Cold / Warm Temperature Limit" },
+    { 0x255, 1.0e-2, "°C", "Cold / Warm Temperature Limit" },
+    { 0x256, 1.0e-1, "°C", "Cold / Warm Temperature Limit" },
+    { 0x257, 1.0e0,  "°C", "Cold / Warm Temperature Limit" },
 
-    /* E111 1nnn cumul. count max power � 10(nnn-3) W 0.001W to 10000W */
+    /* E111 1nnn cumul. count max power § 10(nnn-3) W 0.001W to 10000W */
     { 0x258, 1.0e-3, "W", "Cumul count max power" },
     { 0x259, 1.0e-3, "W", "Cumul count max power" },
     { 0x25A, 1.0e-1, "W", "Cumul count max power" },
@@ -686,7 +686,7 @@ mbus_variable_vif fixed_table[] = {
     { 0x36, 1.0e1, "m^3/h", "Volume flow" },
     { 0x37, 1.0e2, "m^3/h", "Volume flow" },
 
-    { 0x38, 1.0e-3, "�C", "Temperature" },
+    { 0x38, 1.0e-3, "°C", "Temperature" },
 
     { 0x39, 1.0e0,  "Units for H.C.A.", "H.C.A." },
 
@@ -1467,13 +1467,6 @@ mbus_recv_frame(mbus_handle * handle, mbus_frame *frame)
     }
 
     result = handle->recv(handle, frame);
-    
-    /* frame valid, but wrong direction */
-    if (mbus_frame_direction(frame) == MBUS_CONTROL_MASK_DIR_M2S)
-    {
-        /* purge echo and retry (echo cancelation) */
-        result = handle->recv(handle, frame);
-    }
 
     if (frame != NULL)
     {