[asterisk-bugs] [Asterisk 0017021]: On omitting the T flag from Dial() the caller can still make a blind transfer

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=17021 
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Reported By:                kovzol
Assigned To:                
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Project:                    Asterisk
Issue ID:                   17021
Category:                   Channels/chan_sip/Transfers
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     feedback
Asterisk Version:           1.4.29.1 
JIRA:                        
Regression:                 No 
Reviewboard Link:            
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
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Date Submitted:             2010-03-13 11:18 CST
Last Modified:              2010-03-15 11:12 CDT
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Summary:                    On omitting the T flag from Dial() the caller can
still make a blind transfer
Description: 
I use allowtransfer=yes in sip.conf. I think if I omit the T flag from
Dial() in a dialplan extension, no blind transfer should be made by the
caller. But the caller can still make a blind transfer if he presses the
TRANSFER key.

A partial workaround is if I set allowtransfer=no in sip.conf, but this
will disable the blind transfer initiated by the caller side as well (which
is not what I would like to).
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 (0119382) lmadsen (administrator) - 2010-03-15 11:12
 https://issues.asterisk.org/view.php?id=17021#c119382 
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Per IRC:

<file> T and t enable DTMF based transfers, they do not act as a policy
enforcement on transfers initiated by other methods


So if that is your purpose in using the 'T' or 't' flags, then that is not
the expected behaviour. 

Issue History 
Date Modified    Username       Field                    Change               
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2010-03-15 11:12 lmadsen        Note Added: 0119382                          
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