====== Get recording file URL ======

  * Reques String:
<code>EVENT=GetMonitor&sessionid=sessionid&calldate=calldate&mp3=mp3</code>

  * Description:
According to sessionId and call date, get URL of the recording file for play or download

<note important>To use this API, you need to configure /etc/astercc.conf section [system] webroot_address first,
it is supposed to be call center web URL, such as
webroot_address = http://192.168.1.100:80/
</note>

  * Parameters:

^ Parameters      ^ Type       ^ Description          ^
|EVENT|String|GetMonitor|
|sessionid|String|sessionId of the call|
|calldate|String|call date, such as: 2013-02-09|
|mp3|String|no / yes  if you want mp3 format, no by default|

  * Return Format：

<code>
|Retuen|code|Retuen|message
</code>

  * Type of the Return Value:String
  * Return values:

^ Value      ^ Description       ^
|<code>|Retuen|1|Retuen|address</code>|<code>|Retuen|succeed|Retuen|record address
ex:
|Retuen|1|Retuen|http://192.168.1.100:8880/getMonitor/ 20130123114549-2227-1986.wav</code>|
|<code>|Retuen|2|Retuen|message</code>|<code>|Retuen|failed|Retuen|message</code>|