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<p class=MsoNormal><span class=SpellE><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>Hi</span></font></span><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-GB'>is ser supporting the SIP
Request PRACK ? I get this Requests when i am forwarding an incoming call from
a cisco router back to it (with an other number) </span></font><font size=2
face=Wingdings><span lang=EN-GB style='font-size:10.0pt;font-family:Wingdings;
mso-ascii-font-family:Arial;mso-hansi-font-family:Arial;mso-bidi-font-family:
Arial;mso-ansi-language:EN-GB;mso-char-type:symbol;mso-symbol-font-family:Wingdings'><span
style='mso-char-type:symbol;mso-symbol-font-family:Wingdings'>à</span></span></font><font
size=2 face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial;
mso-ansi-language:EN-GB'> the destination telephone rings but i do not hear the
signals (ringing) on my calling phone. When the called phone accepts the call
then everything works fine.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-GB'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-GB'>In more detail:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-GB'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-GB'>The cisco router sends 2
PRACK Requests:<o:p></o:p></span></font></p>
<ol style='mso-margin-top-alt:0cm' start=1 type=1>
<li class=MsoNormal style='mso-list:l0 level1 lfo1;tab-stops:list 36.0pt'><font
size=2 face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:
Arial;mso-ansi-language:EN-GB'>to the phone that is the destination of the
forward (after forwarding)<o:p></o:p></span></font></li>
<li class=MsoNormal style='mso-list:l0 level1 lfo1;tab-stops:list 36.0pt'><font
size=2 face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:
Arial;mso-ansi-language:EN-GB'>to the phone with the forwarding set<o:p></o:p></span></font></li>
</ol>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-GB'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-GB'>But not to the phone which
initialises the call.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-GB'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-GB'>Regards,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-GB
style='font-size:12.0pt;mso-ansi-language:EN-GB'>Reinhard</span><span
lang=EN-GB style='mso-no-proof:yes'> </span></font><font size=2 face=Arial><span
lang=EN-GB style='font-size:10.0pt;font-family:Arial;mso-ansi-language:EN-GB'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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