asterisk users - Sep 2009 - Aastra - Alert-Info : how to stop auto-answer on call second leg ?

Hi,

When implementing click2dial feature, I can trigger an Aastra phone to
auto-answer using statement like :
SIPAddHeader(Alert-Info: info=alert-autoanswer);

This is very convenient when trying to reach a distant party (ie through
PSTN)

The trouble is when 2 Aastra are calling each other over the LAN, this
single statement is memorized somehow and both phones (caller and callee)
auto-answer.
Is there a way to "cancel" this auto-answer feature on the second leg
of a
call, either with a SIPRemoveHeader-like application or using something like
(before dialing the second leg) :
SIPAddHeader(Alert-Info: info=alert-noautoanswer);

I've tried many things unsuccessfully such as:
SIPAddHeader(Alert-Info: info=alert-community-1);        (From an old doc)


Best regards
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Add this line to your aastra.cfg file

sip intercom allow barge in: 0 # don't barge in on existing calls



Olivier wrote:
> Hi,
> 
> When implementing click2dial feature, I can trigger an Aastra phone to 
> auto-answer using statement like :
> SIPAddHeader(Alert-Info: info=alert-autoanswer);
> 
> This is very convenient when trying to reach a distant party (ie through 
> PSTN)
> 
> The trouble is when 2 Aastra are calling each other over the LAN, this 
> single statement is memorized somehow and both phones (caller and 
> callee) auto-answer.
> Is there a way to "cancel" this auto-answer feature on the second
leg of
> a call, either with a SIPRemoveHeader-like application or using 
> something like (before dialing the second leg) :
> SIPAddHeader(Alert-Info: info=alert-noautoanswer);
> 
> I've tried many things unsuccessfully such as:
> SIPAddHeader(Alert-Info: info=alert-community-1);        (From an old doc)
> 
> 
> Best regards
> 
> 
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> 
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