[Asterisk-Users] transfer with threeway calling

[Steven Critchfield]

On Mon, 2003-12-15 at 07:18, Michiel Betel wrote:
> Hi,
> 
> We are using threewaycalling & flash transfers over a CAC channelbank.
> 
> The following happens:
> 
> Call comes in to my extension
> I talk to a party and press flash
> party goes on hold, I get get dail tone
> I dial internal number
> internal party answers
> I press flash once more
> we are now in a three party conference
> Or I hang up, and thus transfer the call.
> 
> Thats fine, but....
> 
> What if the internal party is busy and answers with voicemail
> how then do I get my original call back to me? Pressing flash will
> conf in the voicemail prompts of the internal party. Hanging up will
> transfer the party to the voicemail...
> 
> Or am I missing somthing essential here??

Your not missing anything essential, and have described a limitation in
analog signaling. What you need to think about is alternatives. There is
always the call parking so that you push the caller into a state that
totally frees you from them. You then are able to call the other
extension and tell them the parked extension number. It doesn't allow
for the 3 of you to conference in, but the call gets handed off well. If
you get busy voicemail, you can hangup and retrieve the parked call
yourself. Or you can ask, if they needed to speak to that person, they
might be interested in leaving a voicemail. So the three way call with
transfer that may end up in voicemail is fine too. 
-- 
Steven Critchfield  <critch at basesys.com>