diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index 57f8bb975d798bc500bee53417da5d6cced7d138..38dd57bf8b2b11029c35f84a746272389ae5b941 100644
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -15445,6 +15445,7 @@ static int handle_common_options(struct ast_flags *flags, struct ast_flags *mask
 			ast_log(LOG_WARNING, "Unknown dtmf mode '%s' on line %d, using rfc2833\n", v->value, v->lineno);
 			ast_set_flag(&flags[0], SIP_DTMF_RFC2833);
 		}
+		res = 1;
 	} else if (!strcasecmp(v->name, "nat")) {
 		ast_set_flag(&mask[0], SIP_NAT);
 		ast_clear_flag(&flags[0], SIP_NAT);
@@ -15456,6 +15457,7 @@ static int handle_common_options(struct ast_flags *flags, struct ast_flags *mask
 			ast_set_flag(&flags[0], SIP_NAT_ALWAYS);
 		else
 			ast_set_flag(&flags[0], SIP_NAT_RFC3581);
+		res = 1;
 	} else if (!strcasecmp(v->name, "canreinvite")) {
 		ast_set_flag(&mask[0], SIP_REINVITE);
 		ast_clear_flag(&flags[0], SIP_REINVITE);
@@ -15477,6 +15479,7 @@ static int handle_common_options(struct ast_flags *flags, struct ast_flags *mask
 				}
 			}
 		}
+		res = 1;
 	} else if (!strcasecmp(v->name, "insecure")) {
 		ast_set_flag(&mask[0], SIP_INSECURE_PORT | SIP_INSECURE_INVITE);
 		ast_clear_flag(&flags[0], SIP_INSECURE_PORT | SIP_INSECURE_INVITE);
@@ -15495,6 +15498,7 @@ static int handle_common_options(struct ast_flags *flags, struct ast_flags *mask
 					ast_log(LOG_WARNING, "Unknown insecure mode '%s' on line %d\n", v->value, v->lineno);
 			}
 		}
+		res = 1;
 	} else if (!strcasecmp(v->name, "progressinband")) {
 		ast_set_flag(&mask[0], SIP_PROG_INBAND);
 		ast_clear_flag(&flags[0], SIP_PROG_INBAND);
@@ -15502,8 +15506,7 @@ static int handle_common_options(struct ast_flags *flags, struct ast_flags *mask
 			ast_set_flag(&flags[0], SIP_PROG_INBAND_YES);
 		else if (strcasecmp(v->value, "never"))
 			ast_set_flag(&flags[0], SIP_PROG_INBAND_NO);
-  	} else if (!strcasecmp(v->name, "allowguest")) {
-		global_allowguest = ast_true(v->value) ? 1 : 0;
+		res = 1;
 	} else if (!strcasecmp(v->name, "promiscredir")) {
 		ast_set_flag(&mask[0], SIP_PROMISCREDIR);
 		ast_set2_flag(&flags[0], ast_true(v->value), SIP_PROMISCREDIR);
@@ -15511,27 +15514,34 @@ static int handle_common_options(struct ast_flags *flags, struct ast_flags *mask
 	} else if (!strcasecmp(v->name, "videosupport")) {
 		ast_set_flag(&mask[1], SIP_PAGE2_VIDEOSUPPORT);
 		ast_set2_flag(&flags[1], ast_true(v->value), SIP_PAGE2_VIDEOSUPPORT);
+		res = 1;
 	} else if (!strcasecmp(v->name, "allowoverlap")) {
 		ast_set_flag(&mask[1], SIP_PAGE2_ALLOWOVERLAP);
 		ast_set2_flag(&flags[1], ast_true(v->value), SIP_PAGE2_ALLOWOVERLAP);
+		res = 1;
 	} else if (!strcasecmp(v->name, "allowsubscribe")) {
 		ast_set_flag(&mask[1], SIP_PAGE2_ALLOWSUBSCRIBE);
 		ast_set2_flag(&flags[1], ast_true(v->value), SIP_PAGE2_ALLOWSUBSCRIBE);
+		res = 1;
 	} else if (!strcasecmp(v->name, "t38pt_udptl")) {
 		ast_set_flag(&mask[1], SIP_PAGE2_T38SUPPORT_UDPTL);
 		ast_set2_flag(&flags[1], ast_true(v->value), SIP_PAGE2_T38SUPPORT_UDPTL);
+		res = 1;
 #ifdef WHEN_WE_HAVE_T38_FOR_OTHER_TRANSPORTS
 	} else if (!strcasecmp(v->name, "t38pt_rtp")) {
 		ast_set_flag(&mask[1], SIP_PAGE2_T38SUPPORT_RTP);
 		ast_set2_flag(&flags[1], ast_true(v->value), SIP_PAGE2_T38SUPPORT_RTP);
+		res = 1;
 	} else if (!strcasecmp(v->name, "t38pt_tcp")) {
 		ast_set_flag(&mask[1], SIP_PAGE2_T38SUPPORT_TCP);
 		ast_set2_flag(&flags[1], ast_true(v->value), SIP_PAGE2_T38SUPPORT_TCP);
+		res = 1;
 #endif
 	} else if (!strcasecmp(v->name, "rfc2833compensate")) {
 		ast_set_flag(&mask[1], SIP_PAGE2_RFC2833_COMPENSATE);
 		ast_set2_flag(&flags[1], ast_true(v->value), SIP_PAGE2_RFC2833_COMPENSATE);
-	}
+		res = 1;
+	} 
 
 	return res;
 }
@@ -16271,6 +16281,8 @@ static int reload_config(enum channelreloadreason reason)
 		/* Create the dialogs list */
 		if (!strcasecmp(v->name, "context")) {
 			ast_copy_string(default_context, v->value, sizeof(default_context));
+  		} else if (!strcasecmp(v->name, "allowguest")) {
+			global_allowguest = ast_true(v->value) ? 1 : 0;
 		} else if (!strcasecmp(v->name, "realm")) {
 			ast_copy_string(global_realm, v->value, sizeof(global_realm));
 		} else if (!strcasecmp(v->name, "useragent")) {