[asterisk-bugs] [Asterisk 0016262]: ChanSpy Whisper not working properly when peer has VAD and CNG on.

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
====================================================================== 
https://issues.asterisk.org/view.php?id=16262 
====================================================================== 
Reported By:                CrackBabie
Assigned To:                
====================================================================== 
Project:                    Asterisk
Issue ID:                   16262
Category:                   Applications/app_chanspy
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     acknowledged
Asterisk Version:           SVN 
JIRA:                       SWP-429 
Regression:                 No 
Reviewboard Link:            
SVN Branch (only for SVN checkouts, not tarball releases):  1.4  
SVN Revision (number only!):  
Request Review:              
====================================================================== 
Date Submitted:             2009-11-17 12:32 CST
Last Modified:              2009-12-02 14:31 CST
====================================================================== 
Summary:                    ChanSpy Whisper not working properly when peer has
VAD and CNG on.
Description: 
when I use a SIP provider with VAD/CNG that is always ON. firt of all I get
this in the CLI:

rtp.c:831 process_rfc3389: Comfort noise support incomplete in Asterisk
(RFC 3389). Please turn off on client if possible. Client IP: 0.0.0.0

which is normal and the call would work fine.

the strange thing is when I ChanSpy on the call.
A(Sping)
B(Spied)
C(Person on the other end of the peer.)

A can hear B and C
B can only hear A if C is not silent

so it feels to me that in order for B to hear A there must be audio coming
from C for asterisk to mix it in with A's audio.

====================================================================== 

---------------------------------------------------------------------- 
 (0114562) lmadsen (administrator) - 2009-12-02 14:31
 https://issues.asterisk.org/view.php?id=16262#c114562 
---------------------------------------------------------------------- 
The problem here is the way in which Asterisk handles media. There are many
places in Asterisk that expect media at all times, so handling the VAD
scearios where audio is not always being sent is non-trivial.

The status will remain at minor for now. 

Issue History 
Date Modified    Username       Field                    Change               
====================================================================== 
2009-12-02 14:31 lmadsen        Note Added: 0114562                          
======================================================================