diff -Nur asterisk-16.6.2-old/res/res_pjsip_messaging.c asterisk-16.6.2/res/res_pjsip_messaging.c
--- asterisk-16.6.2-old/res/res_pjsip_messaging.c	2020-01-18 17:02:19.931696415 +0100
+++ asterisk-16.6.2/res/res_pjsip_messaging.c	2020-01-25 21:39:58.683188302 +0100
@@ -584,6 +584,8 @@
 	struct ast_msg *msg;
         char *to;
 	char *from;
+	char *type;
+	char *subtype;
 };
 
 static void msg_data_destroy(void *obj)
@@ -592,12 +594,18 @@
 
 	ast_free(mdata->from);
 	ast_free(mdata->to);
+	ast_free(mdata->type);
+	ast_free(mdata->subtype);
 
 	ast_msg_destroy(mdata->msg);
 }
 
 static struct msg_data *msg_data_create(const struct ast_msg *msg, const char *to, const char *from)
 {
+	const char *rawcontenttype;
+	char *contenttype; 
+	char *type;
+	int typepart;
 	char *uri_params;
 	struct msg_data *mdata = ao2_alloc(sizeof(*mdata), msg_data_destroy);
 
@@ -611,18 +619,48 @@
 	/* To starts with 'pjsip:' which needs to be removed. */
 	if (!(to = strchr(to, ':'))) {
 		ao2_ref(mdata, -1);
+		ast_log(LOG_DEBUG, "Wrong to\n");
 		return NULL;
 	}
 	++to;/* Now skip the ':' */
 
 	/* Make sure we start with sip: */
+	ast_log(LOG_DEBUG, "Handling pjsip: to sip: in to\n");
 	mdata->to = ast_begins_with(to, "sip:") ? ast_strdup(to) : ast_strdup(to - 4);
+	ast_log(LOG_DEBUG, "Handling from\n");
 	mdata->from = ast_strdup(from);
 	if (!mdata->to || !mdata->from) {
 		ao2_ref(mdata, -1);
 		return NULL;
 	}
 
+	ast_log(LOG_DEBUG, "Reading Content-Type\n");
+	rawcontenttype = ast_msg_get_var(mdata->msg, "Content-Type");
+	ast_log(LOG_DEBUG, "RAW content type: %s\n", rawcontenttype);
+	
+	if (rawcontenttype != NULL) {
+		contenttype = ast_strdup(rawcontenttype);
+		ast_log(LOG_DEBUG, "Copied content type: %s\n", contenttype);
+
+		ast_log(LOG_DEBUG, "Defining content-type to %s\n", contenttype);
+		typepart = 0;
+		while (type = strsep(&contenttype, "/") && typepart < 2) {
+			if (typepart == 0) {
+				mdata->type = ast_strdup(type);
+			}
+			else {
+				mdata->subtype = ast_strdup(type);
+			}
+			typepart++;
+		}
+		ast_log(LOG_DEBUG, "Content-Type in mdata set to %s/%s\n", mdata->type, mdata->subtype);
+		ast_free(contenttype);
+	} else {
+		ast_log(LOG_DEBUG, "Default content-type to text/plain because no content-type was defined\n");
+		mdata->type = "text";
+		mdata->subtype = "plain";
+	}
+
 	/*
 	 * Sometimes from URI can contain URI parameters, so remove them.
 	 *
@@ -640,8 +678,8 @@
 	RAII_VAR(struct msg_data *, mdata, data, ao2_cleanup);
 
 	const struct ast_sip_body body = {
-		.type = "text",
-		.subtype = "plain",
+		.type = mdata->type,
+		.subtype = mdata->subtype,
 		.body_text = ast_msg_get_body(mdata->msg)
 	};
 
@@ -665,6 +703,8 @@
 	update_to(tdata, mdata->to);
 	update_from(tdata, mdata->from);
 
+	ast_log(LOG_DEBUG, "Set Content-Type of body to %s/%s\n", body.type, body.subtype);
+
 	if (ast_sip_add_body(tdata, &body)) {
 		pjsip_tx_data_dec_ref(tdata);
 		ast_log(LOG_ERROR, "PJSIP MESSAGE - Could not add body to request\n");