diff --git a/indra/newview/app_settings/settings.xml b/indra/newview/app_settings/settings.xml
index 61bc58b1df..ab1ea6bdbc 100644
--- a/indra/newview/app_settings/settings.xml
+++ b/indra/newview/app_settings/settings.xml
@@ -1639,6 +1639,17 @@
       <key>Value</key>
       <string />
     </map>
+    <key>ConversationHistoryPageSize</key>
+    <map>
+      <key>Comment</key>
+      <string>Chat history of conversation opened from call log is displayed by pages. So this is number of entries per page.</string>
+      <key>Persist</key>
+      <integer>1</integer>
+      <key>Type</key>
+      <string>S32</string>
+      <key>Value</key>
+      <integer>100</integer>
+    </map>
     <key>NearbyChatIsNotTornOff</key>
     <map>
       <key>Comment</key>
diff --git a/indra/newview/llfloaterconversationpreview.cpp b/indra/newview/llfloaterconversationpreview.cpp
index e8554bb066..2c34029c5c 100644
--- a/indra/newview/llfloaterconversationpreview.cpp
+++ b/indra/newview/llfloaterconversationpreview.cpp
@@ -33,12 +33,15 @@
 LLFloaterConversationPreview::LLFloaterConversationPreview(const LLSD& session_id)
 :	LLFloater(session_id),
 	mChatHistory(NULL),
-	mSessionID(session_id.asUUID())
+	mSessionID(session_id.asUUID()),
+	mCurrentPage(0),
+	mPageSize(gSavedSettings.getS32("ConversationHistoryPageSize"))
 {}
 
 BOOL LLFloaterConversationPreview::postBuild()
 {
 	mChatHistory = getChild<LLChatHistory>("chat_history");
+	getChild<LLUICtrl>("more_history")->setCommitCallback(boost::bind(&LLFloaterConversationPreview::onMoreHistoryBtnClick, this));
 
 	const LLConversation* conv = LLConversationLog::instance().getConversation(mSessionID);
 	if (conv)
@@ -52,6 +55,11 @@ BOOL LLFloaterConversationPreview::postBuild()
 		getChild<LLLineEditor>("description")->setValue(name);
 	}
 
+	std::string file = conv->getHistoryFileName();
+	LLLogChat::loadChatHistory(file, mMessages, true);
+
+	mCurrentPage = mMessages.size() / mPageSize;
+
 	return LLFloater::postBuild();
 }
 
@@ -62,51 +70,59 @@ void LLFloaterConversationPreview::draw()
 
 void LLFloaterConversationPreview::onOpen(const LLSD& session_id)
 {
-	const LLConversation* conv = LLConversationLog::instance().getConversation(session_id);
-	if (!conv)
+	showHistory();
+}
+
+void LLFloaterConversationPreview::showHistory()
+{
+	if (!mMessages.size())
 	{
 		return;
 	}
-	std::list<LLSD> messages;
-	std::string file = conv->getHistoryFileName();
-	LLLogChat::loadAllHistory(file, messages);
 
-	if (messages.size())
+	mChatHistory->clear();
+
+	std::ostringstream message;
+	std::list<LLSD>::const_iterator iter = mMessages.begin();
+
+	int delta = 0;
+	if (mCurrentPage)
 	{
-		std::ostringstream message;
-		std::list<LLSD>::const_iterator iter = messages.begin();
-		for (; iter != messages.end(); ++iter)
-		{
-			LLSD msg = *iter;
-
-			std::string time	= msg["time"].asString();
-			LLUUID from_id		= msg["from_id"].asUUID();
-			std::string from	= msg["from"].asString();
-			std::string message	= msg["message"].asString();
-			bool is_history	= msg["is_history"].asBoolean();
-
-			LLChat chat;
-			chat.mFromID = from_id;
-			chat.mSessionID = session_id;
-			chat.mFromName = from;
-			chat.mTimeStr = time;
-			chat.mChatStyle = is_history ? CHAT_STYLE_HISTORY : chat.mChatStyle;
-			chat.mText = message;
-
-			appendMessage(chat);
-		}
+		double num_of_pages = (double)mMessages.size() / mPageSize;
+		delta = (ceil(num_of_pages) - num_of_pages) * mPageSize;
 	}
-}
 
-void LLFloaterConversationPreview::appendMessage(const LLChat& chat)
-{
-	if (!chat.mMuted)
+	std::advance(iter, (mCurrentPage * mPageSize) - delta);
+
+	for (int msg_num = 0; (iter != mMessages.end() && msg_num < mPageSize); ++iter, ++msg_num)
 	{
-		LLSD args;
-		args["use_plain_text_chat_history"] = true;
-		args["show_time"] = true;
-		args["show_names_for_p2p_conv"] = true;
+		LLSD msg = *iter;
+
+		std::string time	= msg["time"].asString();
+		LLUUID from_id		= msg["from_id"].asUUID();
+		std::string from	= msg["from"].asString();
+		std::string message	= msg["message"].asString();
+		bool is_history		= msg["is_history"].asBoolean();
+
+		LLChat chat;
+		chat.mFromID = from_id;
+		chat.mSessionID = mSessionID;
+		chat.mFromName = from;
+		chat.mTimeStr = time;
+		chat.mChatStyle = is_history ? CHAT_STYLE_HISTORY : chat.mChatStyle;
+		chat.mText = message;
 
 		mChatHistory->appendMessage(chat);
 	}
+
+}
+
+void LLFloaterConversationPreview::onMoreHistoryBtnClick()
+{
+	if (--mCurrentPage < 0)
+	{
+		return;
+	}
+
+	showHistory();
 }
diff --git a/indra/newview/llfloaterconversationpreview.h b/indra/newview/llfloaterconversationpreview.h
index cfc7c34485..5105ef3702 100644
--- a/indra/newview/llfloaterconversationpreview.h
+++ b/indra/newview/llfloaterconversationpreview.h
@@ -42,10 +42,15 @@ public:
 	virtual void onOpen(const LLSD& session_id);
 
 private:
-	void appendMessage(const LLChat& chat);
+	void onMoreHistoryBtnClick();
+	void showHistory();
 
 	LLChatHistory*	mChatHistory;
 	LLUUID			mSessionID;
+	int				mCurrentPage;
+	int				mPageSize;
+
+	std::list<LLSD> mMessages;
 };
 
 #endif /* LLFLOATERCONVERSATIONPREVIEW_H_ */
diff --git a/indra/newview/llimview.cpp b/indra/newview/llimview.cpp
index 216db15c94..effcc9a826 100644
--- a/indra/newview/llimview.cpp
+++ b/indra/newview/llimview.cpp
@@ -263,7 +263,7 @@ LLIMModel::LLIMSession::LLIMSession(const LLUUID& session_id, const std::string&
 		std::list<LLSD> chat_history;
 
 		//involves parsing of a chat history
-		LLLogChat::loadAllHistory(mHistoryFileName, chat_history);
+		LLLogChat::loadChatHistory(mHistoryFileName, chat_history);
 		addMessagesFromHistory(chat_history);
 	}
 
diff --git a/indra/newview/lllogchat.cpp b/indra/newview/lllogchat.cpp
index ebb5912ace..073f5f00c5 100644
--- a/indra/newview/lllogchat.cpp
+++ b/indra/newview/lllogchat.cpp
@@ -387,7 +387,7 @@ void append_to_last_message(std::list<LLSD>& messages, const std::string& line)
 }
 
 // static
-void LLLogChat::loadAllHistory(const std::string& file_name, std::list<LLSD>& messages)
+void LLLogChat::loadChatHistory(const std::string& file_name, std::list<LLSD>& messages, bool load_all_history/*= false*/)
 {
 	if (file_name.empty())
 	{
@@ -412,8 +412,8 @@ void LLLogChat::loadAllHistory(const std::string& file_name, std::list<LLSD>& me
 	S32 len;
 	bool firstline = TRUE;
 
-	if (fseek(fptr, (LOG_RECALL_SIZE - 1) * -1  , SEEK_END))
-	{	//File is smaller than recall size.  Get it all.
+	if (load_all_history || fseek(fptr, (LOG_RECALL_SIZE - 1) * -1  , SEEK_END))
+	{	//We need to load the whole historyFile or it's smaller than recall size, so get it all.
 		firstline = FALSE;
 		if (fseek(fptr, 0, SEEK_SET))
 		{
diff --git a/indra/newview/lllogchat.h b/indra/newview/lllogchat.h
index 27752452c9..95f83e64e5 100644
--- a/indra/newview/lllogchat.h
+++ b/indra/newview/lllogchat.h
@@ -50,12 +50,12 @@ public:
 				const LLUUID& from_id,
 				const std::string& line);
 
-	/** @deprecated @see loadAllHistory() */
+	/** @deprecated @see loadChatHistory() */
 	static void loadHistory(const std::string& filename, 
 		                    void (*callback)(ELogLineType, const LLSD&, void*), 
 							void* userdata);
 
-	static void loadAllHistory(const std::string& file_name, std::list<LLSD>& messages);
+	static void loadChatHistory(const std::string& file_name, std::list<LLSD>& messages, bool load_all_history = false);
 private:
 	static std::string cleanFileName(std::string filename);
 };
diff --git a/indra/newview/llnearbychat.cpp b/indra/newview/llnearbychat.cpp
index a723748094..f1518fe825 100644
--- a/indra/newview/llnearbychat.cpp
+++ b/indra/newview/llnearbychat.cpp
@@ -262,7 +262,7 @@ void LLNearbyChat::loadHistory()
 	do_not_log["do_not_log"] = true;
 
 	std::list<LLSD> history;
-	LLLogChat::loadAllHistory("chat", history);
+	LLLogChat::loadChatHistory("chat", history);
 
 	std::list<LLSD>::const_iterator it = history.begin();
 	while (it != history.end())
diff --git a/indra/newview/skins/default/xui/en/floater_conversation_preview.xml b/indra/newview/skins/default/xui/en/floater_conversation_preview.xml
index 27b744aefb..c837a0ee57 100644
--- a/indra/newview/skins/default/xui/en/floater_conversation_preview.xml
+++ b/indra/newview/skins/default/xui/en/floater_conversation_preview.xml
@@ -3,7 +3,7 @@
  legacy_header_height="18"
  can_resize="true"
  default_tab_group="1"
- height="361"
+ height="391"
  layout="topleft"
  min_height="243"
  min_width="234"
@@ -50,4 +50,14 @@
      left="5"
      width="390">
     </chat_history>
+    <button
+     follows="bottom|right"
+     height="22"
+     layout="topleft"
+     name="more_history"
+     label="More history..."
+     right="-15"
+     top_pad="5"
+     width="100">
+    </button>
 </floater>