[asterisk-bugs] [Asterisk 0012725]: delayed RTP cause first sound to chop off

[noreply at bugs.digium.com]

A NOTE has been added to this issue. 
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http://bugs.digium.com/view.php?id=12725 
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Reported By:                loloski
Assigned To:                
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Project:                    Asterisk
Issue ID:                   12725
Category:                   Core/RTP
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     feedback
Asterisk Version:           SVN 
SVN Branch (only for SVN checkouts, not tarball releases):  1.4  
SVN Revision (number only!):  
Disclaimer on File?:        N/A 
Request Review:              
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Date Submitted:             05-26-2008 21:55 CDT
Last Modified:              05-27-2008 10:57 CDT
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Summary:                    delayed RTP cause first sound to chop off
Description: 
snip dialplan

[from-sip]

exten => s,1,Answer
exten => s,n,AGI(agi.php)
exten => s,n,Hangup

snip agi.php

#!/usr/bin/php -q
<?php
  ob_implicit_flush(false);
  set_time_limit(30);
  require 'class/phpagi.php';
  error_reporting(E_ALL);

   $agi = new AGI();
   $agi->answer();
   $pay_date=strtotime("2007-08-14");         /* Proof of concept code */
   $agi->exec("SayUnixTime $pay_date||bdY");  
   $agi->hangup();
?>


When playing August 14, 2007, "august" has been chopped off and you will
hear only the audible "14" "2007" sound

a hack for this atm is to insert $agi->stream_file("silence/1"); before
calling 
the SayUnixTime * apps

/* This is a workaround */

#!/usr/bin/php -q
<?php
  ob_implicit_flush(false);
  set_time_limit(30);
  require 'class/phpagi.php';
  error_reporting(E_ALL);

   $agi = new AGI();
   $agi->answer();
   $pay_date=strtotime("2007-08-14");         /* Proof of concept code */
   $agi->stream_file("silence/1");
   $agi->exec("SayUnixTime $pay_date||bdY");  
   $agi->hangup();
?>

latency is not a problem at all since the latency between the nat UAC to
UAS is 40 ms with 0% packet loss codec involve gsm, uac is ekiga softphone

this is reproducible even without the agi script

I hope i made myself clear on this.


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---------------------------------------------------------------------- 
 loloski - 05-27-08 10:57  
---------------------------------------------------------------------- 
ok, i'll do that, i forgot to mention that my linux desktop is on 802.11g
this might cause the problem behind a wrt54g router, i will try to setup a
linux router for this purpose maybe tomorrow to check if this is the
culprit, i'll let you know asap so that we can close this report. thank you
very much for your time

Best regards,

Ronald 

Issue History 
Date Modified   Username       Field                    Change               
====================================================================== 
05-27-08 10:57  loloski        Note Added: 0087361                          
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