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<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-US'>I was making some fax tests
using a Cisco AS5300, <span class=SpellE>OpenSER</span> 1.0.1 and a </span></font><st1:PersonName><font
 size=2 face=Arial><span lang=EN-US style='font-size:10.0pt;font-family:Arial;
 mso-ansi-language:EN-US'>Grandstream</span></font></st1:PersonName><font
size=2 face=Arial><span lang=EN-US style='font-size:10.0pt;font-family:Arial;
mso-ansi-language:EN-US'> HandyTone 486. Everything results fine when I
previously make the same test directly from the HandyTone to the <span
class=GramE>AS5300,</span> however when I put <span class=SpellE>OpenSER</span>
in the middle the fax connection could not be established. Checking captures at
both ends, I noticed the HandyTone was not receiving the OK response to its
RE-INVITE request, but the AS5300 was sending it. Looking a capture in the <span
class=SpellE>OpenSER</span>, I suppose it didn&#8217;t send the OK response
from the AS5300 to the HandyTone because the format of the Via Header used by
the AS5300. Look at the captures below, the AS5300 sends the <span class=GramE>Via</span>
header in a comma-separated format instead using a line for each one. Is there
a way to workaround this?<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-US'>I think my best option is to
modify the <span class=SpellE>OpenSER</span> code to support both formats. Is
this something that somebody already does it? If the answer it is not, where
can I start?<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-US'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-US'>I&#8217;ll appreciate any
help.<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-US'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><st1:PersonName><font size=2 face=Arial><span lang=EN-US
 style='font-size:10.0pt;font-family:Arial;mso-ansi-language:EN-US'>Dioris
 Moreno</span></font></st1:PersonName><font size=2 face=Arial><span lang=EN-US
style='font-size:10.0pt;font-family:Arial;mso-ansi-language:EN-US'><o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-US'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-US'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-US'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
"Courier New";mso-ansi-language:EN-US'>Cisco AS5300 IP Address:<span
style='mso-tab-count:2'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>AAA.BBB.CCC.DDD<o:p></o:p></span></font></p>

<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
class=SpellE><font size=2 face="Courier New"><span lang=EN-US style='font-size:
10.0pt;font-family:"Courier New";mso-ansi-language:EN-US'>OpenSER</span></font></span><font
size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
"Courier New";mso-ansi-language:EN-US'> IP Address:<span style='mso-tab-count:
3'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>WWW.XXX.YYY.ZZZ<o:p></o:p></span></font></p>

<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><st1:PersonName><font
 size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
 "Courier New";mso-ansi-language:EN-US'>Grandstream</span></font></st1:PersonName><font
size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
"Courier New";mso-ansi-language:EN-US'> HT486 IP Address:<span
style='mso-tab-count:2'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>FFF.GGG.HHH.III<o:p></o:p></span></font></p>

<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
"Courier New";mso-ansi-language:EN-US'>Calling Party Number (PSTN):<span
style='mso-tab-count:1'> </span><span style='mso-tab-count:1'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span><span
class=SpellE>UserA</span><o:p></o:p></span></font></p>

<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
"Courier New";mso-ansi-language:EN-US'>Called Party Number (VoIP):<span
style='mso-tab-count:2'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span><span
class=SpellE>UserB</span><o:p></o:p></span></font></p>

<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
"Courier New";mso-ansi-language:EN-US'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
"Courier New";mso-ansi-language:EN-US'>Message <span class=GramE>From</span> <span
class=SpellE>OpenSER</span> to Cisco AS5300<o:p></o:p></span></font></p>

<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
"Courier New";mso-ansi-language:EN-US'>Session Initiation Protocol<o:p></o:p></span></font></p>

<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
"Courier New";mso-ansi-language:EN-US'><span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp; </span>Request-Line: INVITE
sip:UserA@AAA.BBB.CCC.DDD:5060 SIP/2.0<o:p></o:p></span></font></p>

<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
"Courier New";mso-ansi-language:EN-US'><span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>Method:
INVITE<o:p></o:p></span></font></p>

<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
"Courier New";mso-ansi-language:EN-US'><span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>Resent Packet: False<o:p></o:p></span></font></p>

<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
"Courier New";mso-ansi-language:EN-US'><span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp; </span>Message Header<o:p></o:p></span></font></p>

<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
"Courier New";mso-ansi-language:EN-US'><span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>Record-Route:
&lt;<span class=SpellE>sip<span class=GramE>:WWW.XXX.YYY.ZZZ</span>;ftag</span>=266f5f157860b9ca;lr=on&gt;<o:p></o:p></span></font></p>

<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
"Courier New";mso-ansi-language:EN-US'><span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>Via:
SIP/2.0/UDP <span class=SpellE>WWW.XXX.YYY.ZZZ;branch</span>=z9hG4bK6a82.677fb8e1.0<o:p></o:p></span></font></p>

<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
"Courier New";mso-ansi-language:EN-US'><span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>Via:
SIP/2.0/UDP FFF.GGG.HHH.III:50841<span class=GramE>;branch</span>=z9hG4bK90436408698e6881<o:p></o:p></span></font></p>

<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
"Courier New";mso-ansi-language:EN-US'><span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>From:
&lt;<span class=SpellE>sip:UserB@WWW.XXX.YYY.ZZZ</span>&gt;;tag=266f5f157860b9ca<o:p></o:p></span></font></p>

<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
"Courier New";mso-ansi-language:EN-US'><span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>SIP from address: <span class=SpellE>sip:UserB@WWW.XXX.YYY.ZZZ</span><o:p></o:p></span></font></p>

<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
"Courier New";mso-ansi-language:EN-US'><span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>SIP tag: 266f5f157860b9ca<o:p></o:p></span></font></p>

<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
"Courier New";mso-ansi-language:EN-US'><span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>To:
&lt;<span class=SpellE>sip:UserA@AAA.BBB.CCC.DDD</span>&gt;;tag=D33F86B0-94F<o:p></o:p></span></font></p>

<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
"Courier New";mso-ansi-language:EN-US'><span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>SIP to address: <span class=SpellE>sip:UserA@AAA.BBB.CCC.DDD</span><o:p></o:p></span></font></p>

<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
"Courier New";mso-ansi-language:EN-US'><span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>SIP tag: D33F86B0-94F<o:p></o:p></span></font></p>

<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
"Courier New";mso-ansi-language:EN-US'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
"Courier New";mso-ansi-language:EN-US'>Message <span class=GramE>From</span>
Cisco AS5300 to <span class=SpellE>OpenSER</span><o:p></o:p></span></font></p>

<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
"Courier New";mso-ansi-language:EN-US'>Session Initiation Protocol<o:p></o:p></span></font></p>

<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
"Courier New";mso-ansi-language:EN-US'><span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp; </span>Status-Line: SIP/2.0 200 OK<o:p></o:p></span></font></p>

<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
"Courier New";mso-ansi-language:EN-US'><span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>Status-Code:
200<o:p></o:p></span></font></p>

<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
"Courier New";mso-ansi-language:EN-US'><span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>Resent Packet: False<o:p></o:p></span></font></p>

<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
"Courier New";mso-ansi-language:EN-US'><span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp; </span>Message Header<o:p></o:p></span></font></p>

<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
"Courier New";mso-ansi-language:EN-US'><span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>Via:
SIP/2.0/UDP <span class=SpellE>WWW.XXX.YYY.ZZZ;branch</span>=z9hG4bK6a82.677fb8e1.0,SIP/2.0/UDP
FFF.GGG.HHH.III:50841<span class=GramE>;branch</span>=z9hG4bK90436408698e6881<o:p></o:p></span></font></p>

<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
"Courier New";mso-ansi-language:EN-US'><span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>From:
&lt;<span class=SpellE>sip:UserB@WWW.XXX.YYY.ZZZ</span>&gt;;tag=266f5f157860b9ca<o:p></o:p></span></font></p>

<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
"Courier New";mso-ansi-language:EN-US'><span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>SIP from address: <span class=SpellE>sip:UserB@WWW.XXX.YYY.ZZZ</span><o:p></o:p></span></font></p>

<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
"Courier New";mso-ansi-language:EN-US'><span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>SIP tag: 266f5f157860b9ca<o:p></o:p></span></font></p>

<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
"Courier New";mso-ansi-language:EN-US'><span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>To:
&lt;<span class=SpellE>sip:UserA@AAA.BBB.CCC.DDD</span>&gt;;tag=D33F86B0-94F<o:p></o:p></span></font></p>

<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
"Courier New";mso-ansi-language:EN-US'><span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>SIP to address: <span class=SpellE>sip:UserA@AAA.BBB.CCC.DDD</span><o:p></o:p></span></font></p>

<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span lang=EN-US style='font-size:10.0pt;font-family:
"Courier New";mso-ansi-language:EN-US'><span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></font><font size=2 face="Courier New"><span style='font-size:
10.0pt;font-family:"Courier New"'>SIP <span class=SpellE>tag</span>:
D33F86B0-94F<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt;mso-ansi-language:EN-US'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt;mso-ansi-language:EN-US'><o:p>&nbsp;</o:p></span></font></p>

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