asterisk users - Oct 2010 - Asterisk 1.8.0-rc5: Blind transfer failed, SIP REFER Method

Hi,

I setup an asterisk system (version 1.8.0-rc5). While using a SIP only
environment I discovered a problem using blind transfer. The phones are
SNOM or Aastra and are using the SIP REFER Method.

The following is working:
User A calls user B, B accepts the call, user A than transfers to user C

The following is NOT working:
User A calls user B, B accepts the call, user B than transfers to user C

The call is terminated by asterisk without any warnings or error message
in the CLI.

Looking at Events on AMI, I can see in the first case an Event
"Newchannel" with a "Channel: AsyncGoto..." followed by an
Event
"Masquerade" in prior to the "Transfer". These events are
missing in the
second case.

Is this a new bug or do I something wrong? Shall I open an issue on the
tracker?

Thanks for any hints,

Karsten

Am Donnerstag, den 21.10.2010, 16:27 +0200 schrieb Karsten
Wemheuer:
> Hi,
> 
> I setup an asterisk system (version 1.8.0-rc5). While using a SIP only
> environment I discovered a problem using blind transfer. The phones are
> SNOM or Aastra and are using the SIP REFER Method.
> 
> The following is working:
> User A calls user B, B accepts the call, user A than transfers to user C
> 
> The following is NOT working:
> User A calls user B, B accepts the call, user B than transfers to user C
> 
> The call is terminated by asterisk without any warnings or error message
> in the CLI.
> 
> Looking at Events on AMI, I can see in the first case an Event
> "Newchannel" with a "Channel: AsyncGoto..." followed by
an Event
> "Masquerade" in prior to the "Transfer". These events
are missing in the
> second case.
> 
> Is this a new bug or do I something wrong? Shall I open an issue on the
> tracker?
for the archives: This behavior is still the same in 1.8.0. There is a
workaround available (issue #18185)

Karsten