diff --git a/src/classic/avdtp_source.c b/src/classic/avdtp_source.c
index 60b930e41..3e7cfb1a6 100644
--- a/src/classic/avdtp_source.c
+++ b/src/classic/avdtp_source.c
@@ -250,4 +250,36 @@ int avdtp_source_stream_send_media_payload(uint16_t avdtp_cid, uint8_t local_sei
     stream_endpoint->sequence_number++;
     l2cap_send_prepared(stream_endpoint->l2cap_media_cid, offset);
     return size;
-}
\ No newline at end of file
+}
+
+void avdtp_source_stream_endpoint_request_can_send_now(uint16_t avdtp_cid, uint8_t local_seid){
+    if (avdtp_source_context->avdtp_cid != avdtp_cid){
+        log_error("AVDTP source: avdtp cid 0x%02x not known, expected 0x%02x", avdtp_cid, avdtp_source_context->avdtp_cid);
+        return;
+    }
+    avdtp_stream_endpoint_t * stream_endpoint = avdtp_stream_endpoint_for_seid(local_seid, avdtp_source_context);
+    if (!stream_endpoint) {
+        log_error("AVDTP source: no stream_endpoint with seid %d", local_seid);
+        return;
+    }
+    stream_endpoint->send_stream = 1;
+    avdtp_request_can_send_now_initiator(stream_endpoint->connection, stream_endpoint->l2cap_media_cid);
+}
+
+int avdtp_max_media_payload_size(uint16_t avdtp_cid, uint8_t local_seid){
+    if (avdtp_source_context->avdtp_cid != avdtp_cid){
+        log_error("A2DP source: a2dp cid 0x%02x not known, expected 0x%02x", avdtp_cid, avdtp_source_context->avdtp_cid);
+        return 0;
+    }
+    avdtp_stream_endpoint_t * stream_endpoint = avdtp_stream_endpoint_for_seid(local_seid, avdtp_source_context);
+    if (!stream_endpoint) {
+        log_error("A2DP source: no stream_endpoint with seid %d", local_seid);
+        return 0;
+    }
+    
+    if (stream_endpoint->l2cap_media_cid == 0){
+        log_error("A2DP source: no media connection for seid %d", local_seid);
+        return 0;
+    }  
+    return l2cap_get_remote_mtu_for_local_cid(stream_endpoint->l2cap_media_cid) - AVDTP_MEDIA_PAYLOAD_HEADER_SIZE;
+}
diff --git a/src/classic/avdtp_source.h b/src/classic/avdtp_source.h
index 9edefcd12..db9610c6e 100644
--- a/src/classic/avdtp_source.h
+++ b/src/classic/avdtp_source.h
@@ -245,14 +245,13 @@ avdtp_stream_endpoint_t * avdtp_source_create_stream_endpoint(avdtp_sep_type_t s
  */
 int avdtp_source_stream_send_media_payload(uint16_t avdtp_cid, uint8_t local_seid, uint8_t * storage, int num_bytes_to_copy, uint8_t num_frames, uint8_t marker);
 
-#if 0
+
 /**
  * @brief Request to send a media packet. Packet can be then sent on reception of AVDTP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW event.
  * @param avdtp_cid         AVDTP channel identifyer.
  * @param local_seid        ID of a local stream endpoint.
  */
-void    avdtp_source_stream_endpoint_request_can_send_now(uint16_t avddp_cid, uint8_t local_seid);
-#endif 
+void avdtp_source_stream_endpoint_request_can_send_now(uint16_t avddp_cid, uint8_t local_seid);
 
 /* API_END */