This file is updated patch for Asterisk 1.2.14 by Anton Raharja,
available at http://www.voiprakyat.or.id/download/server/asterisk/sip-messaging/

Original patch file was from Francesco P. Sileno, originally downloaded
from his site http://www.rlyeh.it/tmp/sip_message_support_1.2.5.patch.gz

More info on wiki:

http://www.voip-info.org/wiki/view/Asterisk+SIP+Messaging