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Correct interpretation of bridged <transfer> specification

From: Sharma, Ranjan (Ranjan) <ranjansharma@lucent.com>
Date: Mon, 8 Apr 2002 15:57:47 -0400
Message-ID: <40854296EC36D311A8850008C7BB9D8D084969A5@OH0012EXCH001U>
To: www-voice@w3.org
Hi,

The description under <transfer> says:

"During a bridge transfer, the platform can listen for DTMF input from the
caller. In particular, if a DTMF grammar appears inside the <transfer>
element, DTMF input matching that grammar will terminate the transfer and
return control to the interpreter. A bridge transfer may be terminated by
recognition of an utterance matching an enclosed<grammar> element; support
of this feature is not required. The <transfer> element is modal in that no
grammar defined outside its scope is active."

My question is the scope of the DTMF grammar for terminating the bridged
transfer, please note the phrases "During a bridge transfer" and "A bridge
transfer may be terminated .." first. 

Now, to the question. Is the DTMF grammar operative:
(a) Before a two party stable connection is established (that is, during
ringing of the other number to which the call is transferring)  _OR _
(b) Even afterwards (that is when the two parties are in a conversation) ?

I tend to think it is (a), since 
(i) the actual VoiceXML session is "parked" on the execution platform during
a bridged transfer and
(ii) enforcing a "remote party hang-up" under (b) may not be feasible.

Thanks,
Ranjan



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Received on Monday, 8 April 2002 15:58:22 GMT

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