diff --git a/apps/sbc/SBC.cpp b/apps/sbc/SBC.cpp
index d6245a61..4b2bc5d6 100644
--- a/apps/sbc/SBC.cpp
+++ b/apps/sbc/SBC.cpp
@@ -858,6 +858,11 @@ void SBCDialog::onSipRequest(const AmSipRequest& req) {
     }
   }
 
+  if (fwd) {
+      DBG("replying 100 Trying of %s msg to be fwd'ed\n", req.method.c_str());
+      dlg.reply(req, 100, SIP_REPLY_TRYING);
+  }
+
   AmB2BCallerSession::onSipRequest(req);
 }
 
@@ -1221,6 +1226,11 @@ void SBCCalleeSession::onSipRequest(const AmSipRequest& req) {
     }
   }
 
+  if (fwd) {
+      DBG("replying 100 Trying of %s msg to be fwd'ed\n", req.method.c_str());
+      dlg.reply(req, 100, SIP_REPLY_TRYING);
+  }
+
   AmB2BCalleeSession::onSipRequest(req);
 }
 
diff --git a/core/AmSipHeaders.h b/core/AmSipHeaders.h
index 911a3a44..78b39c39 100644
--- a/core/AmSipHeaders.h
+++ b/core/AmSipHeaders.h
@@ -62,5 +62,6 @@
 #define SIP_REPLY_EXTENSION_REQUIRED    "Extension Required"
 #define SIP_REPLY_LOOP_DETECTED         "Loop Detected"
 #define SIP_REPLY_NOT_EXIST             "Call Leg/Transaction Does Not Exist"
+#define SIP_REPLY_TRYING                "Trying"
 
 #endif /* __AMSIPHEADERS_H__ */