diff --git a/coreapi/linphonecore_jni.cc b/coreapi/linphonecore_jni.cc
index 316e28c11..4e0e824a5 100644
--- a/coreapi/linphonecore_jni.cc
+++ b/coreapi/linphonecore_jni.cc
@@ -3316,3 +3316,52 @@ JNIEXPORT jstring JNICALL Java_org_linphone_core_PresenceNoteImpl_getLang(JNIEnv
 	const char *clang = linphone_presence_note_get_lang(note);
 	return clang ? env->NewStringUTF(clang) : NULL;
 }
+
+/*
+ * Class:     org_linphone_core_PayloadTypeImpl
+ * Method:    setRecvFmtp
+ * Signature: (JLjava/lang/String;)V
+ */
+JNIEXPORT void JNICALL Java_org_linphone_core_PayloadTypeImpl_setRecvFmtp(JNIEnv *env, jobject jobj, jlong ptr, jstring jfmtp){
+	PayloadType *pt=(PayloadType *)ptr;
+	const char *fmtp=jfmtp ? env->GetStringUTFChars(jfmtp,NULL) : NULL;
+	payload_type_set_recv_fmtp(pt,fmtp);
+	if (fmtp) env->ReleaseStringUTFChars(jfmtp,fmtp);
+}
+
+/*
+ * Class:     org_linphone_core_PayloadTypeImpl
+ * Method:    getRecvFmtp
+ * Signature: (J)Ljava/lang/String;
+ */
+JNIEXPORT jstring JNICALL Java_org_linphone_core_PayloadTypeImpl_getRecvFmtp(JNIEnv *env, jobject jobj, jlong ptr){
+	PayloadType *pt=(PayloadType *)ptr;
+	const char *fmtp=pt->recv_fmtp;
+	return fmtp ? env->NewStringUTF(fmtp) : NULL;
+}
+
+/*
+ * Class:     org_linphone_core_PayloadTypeImpl
+ * Method:    setSendFmtp
+ * Signature: (JLjava/lang/String;)V
+ */
+JNIEXPORT void JNICALL Java_org_linphone_core_PayloadTypeImpl_setSendFmtp(JNIEnv *env, jobject jobj, jlong ptr , jstring jfmtp){
+	PayloadType *pt=(PayloadType *)ptr;
+	const char *fmtp=jfmtp ? env->GetStringUTFChars(jfmtp,NULL) : NULL;
+	payload_type_set_send_fmtp(pt,fmtp);
+	if (fmtp) env->ReleaseStringUTFChars(jfmtp,fmtp);
+}
+
+/*
+ * Class:     org_linphone_core_PayloadTypeImpl
+ * Method:    getSendFmtp
+ * Signature: (J)Ljava/lang/String;
+ */
+JNIEXPORT jstring JNICALL Java_org_linphone_core_PayloadTypeImpl_getSendFmtp(JNIEnv *env, jobject jobj, jlong ptr){
+	PayloadType *pt=(PayloadType *)ptr;
+	const char *fmtp=pt->send_fmtp;
+	return fmtp ? env->NewStringUTF(fmtp) : NULL;
+}
+  
+  
+
diff --git a/java/common/org/linphone/core/PayloadType.java b/java/common/org/linphone/core/PayloadType.java
index 648d77465..3952024c5 100644
--- a/java/common/org/linphone/core/PayloadType.java
+++ b/java/common/org/linphone/core/PayloadType.java
@@ -19,8 +19,39 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 package org.linphone.core;
 
 public interface PayloadType {
-
+	/**
+	 * Obtain the registered mime-type (actually submime) of the PayloadType. For example: "H264", "speex"...
+	 * @return the (sub) mime type.
+	 */
 	String getMime();
 	
+	/**
+	 * Return the RTP clockrate. It is usually the same as the audio sampling rate, and 90000 for video payload types.
+	 * @return
+	 */
 	int getRate();
+	
+	/**
+	 * Set format parameter string wished for incoming stream. It is advertised in SDP.
+	 * @param fmtp the fmtp string, like "octet-align=1;mode-set=4,5,6,7"
+	 */
+	void setRecvFmtp(String fmtp);
+	
+	/**
+	 * Return the format parameters wished for incoming stream.
+	 * @return the format parameter string.
+	 */
+	String getRecvFmtp();
+	
+	/**
+	 * Set the format parameter effective for the outgoing stream (unusual).
+	 * @param fmtp
+	 */
+	void setSendFmtp(String fmtp);
+	
+	/**
+	 * Return the format parameter effective for the outgoing stream.
+	 * @return
+	 */
+	String getSendFmtp();
 }
diff --git a/java/impl/org/linphone/core/PayloadTypeImpl.java b/java/impl/org/linphone/core/PayloadTypeImpl.java
index 864b094ff..436cd3f30 100644
--- a/java/impl/org/linphone/core/PayloadTypeImpl.java
+++ b/java/impl/org/linphone/core/PayloadTypeImpl.java
@@ -42,4 +42,26 @@ class PayloadTypeImpl implements PayloadType {
 	public String toString() {
 		return toString(nativePtr);
 	}
+	
+	private native void setRecvFmtp(long ptr, String fmtp);
+	@Override
+	public void setRecvFmtp(String fmtp) {
+		setRecvFmtp(nativePtr,fmtp);
+	}
+	private native String getRecvFmtp(long ptr);
+	@Override
+	public String getRecvFmtp() {
+		return getRecvFmtp(nativePtr);
+	}
+	
+	private native void setSendFmtp(long ptr, String fmtp);
+	@Override
+	public void setSendFmtp(String fmtp) {
+		setSendFmtp(nativePtr,fmtp);
+	}
+	private native String getSendFmtp(long ptr);
+	@Override
+	public String getSendFmtp() {
+		return getSendFmtp(nativePtr);
+	}
 }