diff --git a/src/main/java/com/interplug/qcast/biz/community/BoardService.java b/src/main/java/com/interplug/qcast/biz/community/BoardService.java
index 030e3279..00e9e25a 100644
--- a/src/main/java/com/interplug/qcast/biz/community/BoardService.java
+++ b/src/main/java/com/interplug/qcast/biz/community/BoardService.java
@@ -4,6 +4,8 @@ import java.io.ByteArrayInputStream;
 import java.io.InputStream;
 import java.net.URLEncoder;
 import java.nio.charset.StandardCharsets;
+import java.util.HashMap;
+import java.util.Map;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.http.HttpMethod;
@@ -146,16 +148,21 @@ public class BoardService {
     String url = QSP_API_URL + "/api/file/downloadFile" + "?encodeFileNo=" + encodeFileNo;
 
     /* [2]. QSP API CALL -> Response */
-    String strResponse = interfaceQsp.callApi(HttpMethod.GET, url, null);
+    Map<String, String> result = new HashMap<String, String>();
+    byte[] byteResponse = interfaceQsp.callApi(HttpMethod.GET, url, null, result);
 
-    if (!"".equals(strResponse)) {
+    if (byteResponse != null && byteResponse.length > 0) {
       try {
         /* [3]. API 응답 파일 처리 */
-        response.setContentType("application/octet-stream");
-        response.setHeader("Content-Disposition", "attachment;");
+        response.setContentType(
+            !"".equals(result.get("type")) && result.get("type") != null ? result.get("type")
+                : "application/octet-stream");
+        response.setHeader("Content-Disposition",
+            !"".equals(result.get("disposition")) && result.get("disposition") != null
+                ? result.get("disposition")
+                : "attachment;");
 
-        InputStream inputStream =
-            new ByteArrayInputStream(strResponse.getBytes(StandardCharsets.UTF_8));
+        InputStream inputStream = new ByteArrayInputStream(byteResponse);
         StreamUtils.copy(inputStream, response.getOutputStream());
 
         response.flushBuffer();
@@ -169,8 +176,7 @@ public class BoardService {
 
     } else {
       // [msg] File does not exist.
-      throw new QcastException(ErrorCode.NOT_FOUND,
-          message.getMessage("common.message.file.download.exists"));
+      throw new QcastException(null, message.getMessage("common.message.file.download.exists"));
     }
   }
 }
diff --git a/src/main/java/com/interplug/qcast/util/InterfaceQsp.java b/src/main/java/com/interplug/qcast/util/InterfaceQsp.java
index 82dbe120..50916060 100644
--- a/src/main/java/com/interplug/qcast/util/InterfaceQsp.java
+++ b/src/main/java/com/interplug/qcast/util/InterfaceQsp.java
@@ -1,10 +1,13 @@
 package com.interplug.qcast.util;
 
 import java.io.BufferedReader;
+import java.io.ByteArrayOutputStream;
+import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.io.OutputStreamWriter;
 import java.net.HttpURLConnection;
 import java.net.URL;
+import java.util.Map;
 import org.springframework.http.HttpMethod;
 import org.springframework.stereotype.Component;
 import com.fasterxml.jackson.databind.ObjectMapper;
@@ -79,4 +82,75 @@ public class InterfaceQsp {
 
     return sb != null ? sb.toString() : null;
   }
+
+  /**
+   * API Call - byte return, file down 사용
+   *
+   * @param apiPath
+   * @param requestObject
+   * @return String
+   * @throws Exception
+   */
+  public byte[] callApi(HttpMethod httpMethod, String apiPath, Object requestObject,
+      Map<String, String> result) throws Exception {
+
+    URL url = null;
+    HttpURLConnection con = null;
+    OutputStreamWriter osw = null;
+    BufferedReader br = null;
+
+    byte[] bt = null;
+
+    try {
+      url = new URL(apiPath);
+      con = (HttpURLConnection) url.openConnection();
+      con.setConnectTimeout(30000); // 서버에 연결되는 Timeout 시간 설정
+      con.setReadTimeout(30000); // InputStream 읽어 오는 Timeout 시간 설정
+      con.setRequestMethod(httpMethod.toString());
+      con.setRequestProperty("Content-Type", "application/json");
+      con.setDoInput(true);
+      con.setUseCaches(false);
+      con.setDefaultUseCaches(false);
+
+      if (HttpMethod.GET.equals(httpMethod)) {
+        con.setDoOutput(false);
+      } else {
+        con.setDoOutput(true); // POST 데이터를 OutputStream으로 넘겨 주겠다는 설정
+        if (requestObject != null) {
+          ObjectMapper om = new ObjectMapper();
+          osw = new OutputStreamWriter(con.getOutputStream());
+          osw.write(om.writeValueAsString(requestObject)); // json 형식의 message 전달
+          osw.flush();
+        }
+      }
+      if (con.getResponseCode() == HttpURLConnection.HTTP_OK) {
+        // response 헤더 값 결과 셋팅
+        result.put("type", con.getHeaderField("Content-Type"));
+        result.put("disposition", con.getHeaderField("Content-Disposition"));
+
+        InputStream inputStream = con.getInputStream();
+        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
+
+        byte[] buffer = new byte[4096];
+        int bytesRead;
+        while ((bytesRead = inputStream.read(buffer)) != -1) {
+          outputStream.write(buffer, 0, bytesRead);
+        }
+        bt = outputStream.toByteArray(); // 파일 데이터 반환
+      }
+    } catch (Exception e) {
+      throw e;
+    } finally {
+      try {
+        if (osw != null)
+          osw.close();
+        if (br != null)
+          br.close();
+      } catch (Exception e) {
+        throw e;
+      }
+    }
+
+    return bt != null ? bt : null;
+  }
 }