<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML>
<HEAD>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
<META NAME="Generator" CONTENT="MS Exchange Server version 5.5.2654.19">
<TITLE>RE: New commer questions</TITLE>
</HEAD>
<BODY>
<P><FONT SIZE=2>We use the RFC 1006 length specifier to indicate total message length in TCP.</FONT>
</P>
<P><FONT SIZE=2>The "ALF" is actually anything but message delimitation -- not sure how it got that name. The functions performed by the application are</FONT></P>
<P><FONT SIZE=2> -- reliable delivery (aided by Megaco's transaction orientation)</FONT>
<BR><FONT SIZE=2> -- sequencing (not much needed in Megaco except in sorting out event reports)</FONT>
<BR><FONT SIZE=2> -- throttling in the face of network congestion.</FONT>
</P>
<P><FONT SIZE=2>> -----Original Message-----</FONT>
<BR><FONT SIZE=2>> From: Liu, Gary [<A HREF="mailto:gLiu@UNISPHERENETWORKS.COM">mailto:gLiu@UNISPHERENETWORKS.COM</A>]</FONT>
<BR><FONT SIZE=2>> Sent: Friday, March 02, 2001 11:16 AM</FONT>
<BR><FONT SIZE=2>> To: ITU-SG16@MAILBAG.INTEL.COM</FONT>
<BR><FONT SIZE=2>> Subject: New commer questions</FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> Hi,</FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> I am a new commer to the MEGACO mailing list and have some </FONT>
<BR><FONT SIZE=2>> dump questions.</FONT>
<BR><FONT SIZE=2>> The text enconding is new to me. If TCP is used as transport, how is a</FONT>
<BR><FONT SIZE=2>> transaction message framed out from the data stream. Is </FONT>
<BR><FONT SIZE=2>> "MEGACO/1" the frame</FONT>
<BR><FONT SIZE=2>> mark?</FONT>
<BR><FONT SIZE=2>> The standard requies MGC/MC to support UDP/ALF. UDP is already message</FONT>
<BR><FONT SIZE=2>> based. Why is ALF (application level framing) needed? I </FONT>
<BR><FONT SIZE=2>> though the other way</FONT>
<BR><FONT SIZE=2>> around. Framing is needed for TCP. Thanks.</FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> Gary Liu</FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> Unisphere Networks, Inc.</FONT>
<BR><FONT SIZE=2>> <<A HREF="http://www.unispherenetworks.com" TARGET="_blank">http://www.unispherenetworks.com</A>></FONT>
<BR><FONT SIZE=2>> 7800 Congress Ave., Suit 100</FONT>
<BR><FONT SIZE=2>> Boca Raton, FL 33487</FONT>
<BR><FONT SIZE=2>> T:(561)981-7022, F:(561)981-7001</FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> <A HREF="mailto:gliu@unispherenetworks.com">mailto:gliu@unispherenetworks.com</A></FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</FONT>
<BR><FONT SIZE=2>> For help on this mail list, send "HELP ITU-SG16" in a message to</FONT>
<BR><FONT SIZE=2>> listserv@mailbag.intel.com</FONT>
<BR><FONT SIZE=2>> </FONT>
</P>
</BODY>
</HTML>