asterisk users - Mar 2005 - Support for SIP REFER message

Hi to all,

I am sending a SIP REFER message to Asterisk from a VoiceXML application using
the <Transfer> element to do a Transfer through Asterisk.
I need to know if Asterisk supports the full features of the SIP REFER message
because if i set 'bridge=true'
in the <transfer> element of the VoiceXML application to supervise the
call, Asterisk sends a NOTIFY message with 'subscription-state:
terminated" to the VoiceXML application as if it was a blind transfer
(bridge=false).
Usually, when 'bridge=true' is set in the <transfer> element, the
end point that receives the SIP REFER (i.e Asterisk) should send a SIP NOTIFY to
the VoiceXML application with 'subscription-state: active' to let it
supervise the call and then the endpoint should send Follow-On NOTIFY messages
to let the VoiceXML application know the status of the call (no
answer,busy,...).

Thank you in advance for your help.

Gilbert Abboud
M.Eng. Computer Engineering
Programmer Analyst
Excendia, Montreal
ESN: 514-765-8490

If you are using VoxNauta Lite there is a bug with the VoIP plugin ask them
for an update.

George


Gilbert Abboud wrote:
>Hi to all,
>
>I am sending a SIP REFER message to Asterisk from a VoiceXML application
using the <Transfer> element to do a Transfer through Asterisk.
>I need to know if Asterisk supports the full features of the SIP REFER
message because if i set 'bridge=true'
>in the <transfer> element of the VoiceXML application to supervise the
call, Asterisk sends a NOTIFY message with 'subscription-state:
terminated" to the VoiceXML application as if it was a blind transfer
(bridge=false).
>Usually, when 'bridge=true' is set in the <transfer> element,
the end point that receives the SIP REFER (i.e Asterisk) should send a SIP
NOTIFY to the VoiceXML application with 'subscription-state: active' to
let it supervise the call and then the endpoint should send Follow-On NOTIFY
messages to let the VoiceXML application know the status of the call (no
answer,busy,...).
>
>Thank you in advance for your help.
>
>Gilbert Abboud
>M.Eng. Computer Engineering
>Programmer Analyst
>Excendia, Montreal
>ESN: 514-765-8490
>
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