asterisk users - Mar 2006 - Early media and custom SIP return codes

Is it possible to make Asterisk:

- answer a SIP call with a "183 Session Progress" code
- play an audio message
- quit the call with a given SIP error code (402, 403, etc...)


Thanks.

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    |-                      giannici@neomedia.it
    |ederico Giannici      http://www.neomedia.it
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