app_sms.c:810:13: warning: implicit conversion from 'int' to 'char' changes value from 191 to -65 [-Wconstant-conversion]
                                        *p++ = 191;
                                             ~ ^~~
app_adsiprog.c:1112:28: warning: implicit conversion from 'int' to 'char' changes value from 128 to -128 [-Wconstant-conversion]
                        state->key->retstr[0] = 128;
                                              ~ ^~~
app_adsiprog.c:1148:26: warning: implicit conversion from 'int' to 'char' changes value from 130 to -126 [-Wconstant-conversion]
                        state->sub->data[0] = 130;
                                            ~ ^~~
app_adsiprog.c:1265:20: warning: implicit conversion from 'int' to 'char' changes value from 129 to -127 [-Wconstant-conversion]
                        disp->data[0] = 129;
                                      ~ ^~~
--- apps/app_adsiprog.c	(Asterisk 15.2)
+++ apps/app_adsiprog.c	(working copy)
@@ -1110,5 +1110,5 @@ static int adsi_process(struct adsi_scri
 			}
 			/* Setup initial stuff */
-			state->key->retstr[0] = 128;
+			state->key->retstr[0] = 0x80;
 			/* 1 has the length */
 			state->key->retstr[2] = state->key->id;
@@ -1146,5 +1146,5 @@ static int adsi_process(struct adsi_scri
 			}
 			/* Setup sub */
-			state->sub->data[0] = 130;
+			state->sub->data[0] = 0x82;
 			/* 1 is the length */
 			state->sub->data[2] = 0x0; /* Clear extensibility bit */
@@ -1263,5 +1263,5 @@ static int adsi_process(struct adsi_scri
 				break;
 			}
-			disp->data[0] = 129;
+			disp->data[0] = 0x81;
 			disp->data[1] = disp->datalen - 2;
 			disp->data[2] = ((lrci & 0x3) << 6) | disp->id;
--- apps/app_sms.c	(Asterisk 15.2)
+++ apps/app_sms.c	(working copy)
@@ -810 +810 @@ static void sms_log(sms_t * h, char stat
-					*p++ = 191;
+					*p++ = 0xbf;