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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I asked this on the users list a week and a half ago but
haven’t gotten any response. I’m hoping someone here with PRI/ISDN
experience can help guide me in the right direction. <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 style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>I have a
dialplan (freepbx) that plays a busy signal in-band when an extension is busy
(before an Answer). Stripped down, it looks like this:<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=2 face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New"'>exten
=> 1005,n,PlayTones(busy)<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New"'>exten => 1005,n,Busy(20)<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>Note that
there is no Answer() prior to this. Our trunk is a PRI.<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>When I call
into this extension from outside, I get about 25 seconds of ringing, followed
by a hangup. Looking at the asterisk logs, 20 seconds of that delay is
AFTER the PlayTones() function is invoked. I talked with our Telco about
this, and they want to refer to in-band tones prior to answer as a media
cut-through. The tech said that it is enabled on their end, and he did
some test calls and got some ISDN trap logs. He is saying that the PBX is
playing the ring-back tone instead of the busy tone, but I don’t think
that’s the case (If I add an Answer() to the dialplan, I do in fact hear
the busy tone).<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>Is there
anybody out there who has experience with reading/analyzing IDSN trap logs
(Q931) that can help me narrow down where the issue is and how to fix it?<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>Thanks,<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>-Justin<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>
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