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<DIV><FONT face=Arial size=2><SPAN class=359230415-09012004>I started looking
into * a coouple of weeks ago. I do work on T1/PRI interfaces - stacks etc.
So I am a bit familiar with their capabilities.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=359230415-09012004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=359230415-09012004>1.) I wonder if it
is possible to use the quite extensive signalling features of ISDN / PRI with
Asterisk.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=359230415-09012004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=359230415-09012004>
i.e. instead of sending an inband Busy tone - send a DISCONNECT with CAUSE
Subscriber busy.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=359230415-09012004> or
trigger USER-USER messages from * </SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=359230415-09012004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=359230415-09012004>2.)I haven't played
with the T1 boards yet. </SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=359230415-09012004>
Does the board support transmission of audio BEFORE answer ?</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=359230415-09012004>
This way * could send call progress tones to the network.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=359230415-09012004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=359230415-09012004>
From the network side audio transmission before answer is available on most DID,
T1 and PRI lines.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=359230415-09012004>
We use it here on all 3 trunk types.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=359230415-09012004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN
class=359230415-09012004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN
class=359230415-09012004>Regards</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2>Alfred R. Nurnberger</FONT></DIV>
<DIV>
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