diff --git a/monitor/avdtp.c b/monitor/avdtp.c
index 00b54a9c4..c8213fae6 100644
--- a/monitor/avdtp.c
+++ b/monitor/avdtp.c
@@ -411,6 +411,37 @@ static bool avdtp_open(struct avdtp_frame *avdtp_frame)
 	return false;
 }
 
+static bool avdtp_start(struct avdtp_frame *avdtp_frame)
+{
+	struct l2cap_frame *frame = &avdtp_frame->l2cap_frame;
+	uint8_t type = avdtp_frame->hdr & 0x03;
+	uint8_t seid;
+
+	switch (type) {
+	case AVDTP_MSG_TYPE_COMMAND:
+		if (!l2cap_frame_get_u8(frame, &seid))
+			return false;
+
+		print_field("ACP SEID: %d", seid >> 2);
+
+		while (l2cap_frame_get_u8(frame, &seid))
+			print_field("ACP SEID: %d", seid >> 2);
+
+		return true;
+	case AVDTP_MSG_TYPE_RESPONSE_ACCEPT:
+		return true;
+	case AVDTP_MSG_TYPE_RESPONSE_REJECT:
+		if (!l2cap_frame_get_u8(frame, &seid))
+			return false;
+
+		print_field("ACP SEID: %d", seid >> 2);
+
+		return avdtp_reject_common(avdtp_frame);
+	}
+
+	return false;
+}
+
 static bool avdtp_signalling_packet(struct avdtp_frame *avdtp_frame)
 {
 	struct l2cap_frame *frame = &avdtp_frame->l2cap_frame;
@@ -478,6 +509,8 @@ static bool avdtp_signalling_packet(struct avdtp_frame *avdtp_frame)
 		return avdtp_reconfigure(avdtp_frame);
 	case AVDTP_OPEN:
 		return avdtp_open(avdtp_frame);
+	case AVDTP_START:
+		return avdtp_start(avdtp_frame);
 	}
 
 	packet_hexdump(frame->data, frame->size);