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<body lang=ZH-CN link=blue vlink=purple style='text-justify-trim:punctuation'>

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<p class=MsoNormal><span lang=EN-US style='font-family:"Arial Unicode MS","sans-serif"'>Hi
Sergio,<o:p></o:p></span></p>

<p class=MsoNormal><span lang=EN-US style='font-family:"Arial Unicode MS","sans-serif"'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span lang=EN-US style='font-family:"Arial Unicode MS","sans-serif"'>I'm
sorry to trouble you, but I have some question about h324m protocol.<o:p></o:p></span></p>

<p class=MsoNormal><span lang=EN-US style='font-family:"Arial Unicode MS","sans-serif"'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span lang=EN-US style='font-family:"Arial Unicode MS","sans-serif"'>The
SIP phone cannot get video when I use h.263 codec bridged SIP and 3G calls.<o:p></o:p></span></p>

<p class=MsoNormal><span lang=EN-US style='font-family:"Arial Unicode MS","sans-serif"'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span lang=EN-US style='font-family:"Arial Unicode MS","sans-serif"'>And
I checked the problem that it seems </span><span style='font-family:"Arial Unicode MS","sans-serif"'>“<span
lang=EN-US>create_ast_frame</span>”<span lang=EN-US> function only use h.263plus
codec by default.<o:p></o:p></span></span></p>

<p class=MsoNormal><span lang=EN-US style='font-family:"Arial Unicode MS","sans-serif"'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='font-family:"Arial Unicode MS","sans-serif"'>“<span
lang=EN-US>send-&gt;subclass = AST_FORMAT_H263_PLUS | mark;</span>”<span
lang=EN-US><o:p></o:p></span></span></p>

<p class=MsoNormal><span lang=EN-US style='font-family:"Arial Unicode MS","sans-serif"'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span lang=EN-US style='font-family:"Arial Unicode MS","sans-serif"'>I
try modify that codec to h.263 only, but it</span><span style='font-family:
"Arial Unicode MS","sans-serif"'>’<span lang=EN-US>s failed. There are two
question:<o:p></o:p></span></span></p>

<p class=MsoNormal><span lang=EN-US style='font-family:"Arial Unicode MS","sans-serif"'><o:p>&nbsp;</o:p></span></p>

<p class=MsoListParagraph style='margin-left:18.0pt;text-indent:-18.0pt;
mso-list:l0 level1 lfo2'><![if !supportLists]><span lang=EN-US
style='font-family:"Arial Unicode MS","sans-serif"'><span style='mso-list:Ignore'>1.<span
style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp; </span></span></span><![endif]><span
lang=EN-US style='font-family:"Arial Unicode MS","sans-serif"'>Can I use
libh324m negotiate codec with 3G phone use h.263 only? <o:p></o:p></span></p>

<p class=MsoListParagraph style='margin-left:18.0pt;text-indent:0cm'><span
lang=EN-US style='font-family:"Arial Unicode MS","sans-serif"'>I saw that it
seems can negotiate h.263 or h.263 version 3(h.263++/h.263 2000), but how to
negotiate h.263 1996 or h.263 plus(h.263 1998)?<o:p></o:p></span></p>

<p class=MsoListParagraph style='margin-left:18.0pt;text-indent:-18.0pt;
mso-list:l0 level1 lfo2'><![if !supportLists]><span lang=EN-US
style='font-family:"Arial Unicode MS","sans-serif"'><span style='mso-list:Ignore'>2.<span
style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp; </span></span></span><![endif]><span
lang=EN-US style='font-family:"Arial Unicode MS","sans-serif"'>How can I translate
from h.263 plus to h.263 ? it seems only has different heard, right?<o:p></o:p></span></p>

<p class=MsoNormal><span lang=EN-US style='font-family:"Arial Unicode MS","sans-serif"'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span lang=EN-US style='font-family:"Arial Unicode MS","sans-serif"'>Wait
for your suggestion. Thank you.<o:p></o:p></span></p>

<p class=MsoNormal><span lang=EN-US style='font-family:"Arial Unicode MS","sans-serif"'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span lang=EN-US style='font-family:"Arial Unicode MS","sans-serif"'>Ethan<o:p></o:p></span></p>

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