<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
<TITLE>Message</TITLE>
<META content="MSHTML 5.00.2919.6307" name=GENERATOR></HEAD>
<BODY>
<DIV><FONT face=Arial size=2><SPAN class=650465013-15062004>Hi
all,</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=650465013-15062004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=650465013-15062004>I am attempting to
put together a system involving Ser, so that customers can make VoIP calls, and
depending on the destination, they get billed.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=650465013-15062004>We would like to be
able to cut people off if they run out of credit, so we have decided to use
b2bua.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=650465013-15062004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=650465013-15062004>From what I've been
reading about this (b2bua working with ser), it would seem that it
works.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=650465013-15062004>However, I'm having
a few problems, and was kinda hoping someone would be good enough to spare some
time to answer my questions.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=650465013-15062004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=650465013-15062004>Currently, what we
have is this (in a nutshell):</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=650465013-15062004>Softphone
<-----> Ser Server (+ developed Plugin) <-----> b2bua
<---------> SIP Gateway.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=650465013-15062004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=650465013-15062004>With the flow of
call being as follows:</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=650465013-15062004>Softphone initiates
the call, and passes an INVITE message to the Ser</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=650465013-15062004>The Ser does his biz
on the message (the config file is available if required), and once all goes
well, forwards the message to the b2bua</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=650465013-15062004>b2bua does his biz
again on the INVITE, and forwards the message to the Sip
Gateway.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=650465013-15062004>Sip Gateway connects
the call, and call proceeds until someone disconnects.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=650465013-15062004>Call is billed, if
it is a PSTN call.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=650465013-15062004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=650465013-15062004>All seems simple so
far. However, my main problems are as follows:</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=650465013-15062004>1) Sometimes the
messages (INVITE, ACK, BYE) seem to get caught in a vicious loop, and won't
break out of it, even though the max forward headers is set to 10. I assume this
is a bad config file error, and results in this loop. However, I've changed the
file so amny times at this point, I'm not exactly sure where the loop is
beginning.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=650465013-15062004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=650465013-15062004>2) Sometime when I
make a call, the tmie it takes to connect results in the call being disconnected
before it connects (or just after). As a result, the destination customer
wouldn't humanly have enough time to get to the phone and answer it (unless they
had the phone surgically attached to them). I feel that there is a
bottleneck/delay somewhere (perhaps related to question 1), and as a result the
time to connect is way too long.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=650465013-15062004>Is it a case of I
have too many components, and there is a delay, or something
similar.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=650465013-15062004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=650465013-15062004>These problems are
bad enough when I'm performing single user testing, but when we take on board
20/50/100/500 customers, it's going to become a rather large head-ache
:-)</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=650465013-15062004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=650465013-15062004>Any help would be
most appreciated.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=650465013-15062004>Regards,</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=650465013-15062004>Derek</SPAN></FONT></DIV></BODY></HTML>