[Asterisk-Users] Looking for advice on cell carrier's default "Un avaliable" message

[Joe Pukepail]

Look into the findme feature, this will require the person receiving the
call to push a button "hit 1 to accept this call" before a call gets
transfered to a cell phone (or home phone for that matter), if nobody hits
"1" it continues in the dialplan, this will prevent calls from being
transfered to cell phone voicemail or the caller getting the unavailable
message from the cell phone carrier.

On 12/5/05, Colin Anderson <ColinA at landmarkmasterbuilder.com> wrote:
>
> In our dialplan, we use centralized voicemail for SIP, IAX and cell
> phones.
> This means, if a caller calls a user's DID, it tries his SIP/IAX
> extension,
> then if he doesn't answer there, it tries his cell, then it goes to
> Comedian
> Mail.
>
> Everything works 100%, except when the user shuts his cell phone off. When
> that happens, and he doesn't pick up his SIP/IAX extension, it hits his
> cell
> phone, and the cell carrier's default Unavailable message is played.
> Asterisk detects this as the call being "answered" and completes the call.
> However, this is undesirable behavior. We want it to go to Comedian mail
> instead. Note that this is contrary to what the carrier said would happen.
> The carrier indicated to us that it would just ring and ring and ring
> forever, which is what we want. Now they are saying: "too bad, this is the
> way it works, deal with it"
>
> In order to have the desired behavior, there are three options:
>
> 1. Carrier makes it ring forever (not gonna happen)
> 2. I set the call forward/Unavailable on the cell to a DID that points to
> Comedian Mail and do some Caller ID stuff to make it go to the right
> mailbox. This isn't practical from a management standpoint, it would be
> troublesome and error prone to maintain
> 3. When the cell is off, the carrier's Unavailable message plays right
> away,
> within 2 seconds of the call being dialed. So, somehow magically modify
> the
> dialplan so that if a cell is answered within 2 seconds, go to Comedian
> Mail.
>
> Of these options, 3) would provide the optimum workaround, but I don't
> think
> it's possible to express this in an Asterisk dialplan.
>
> Anyone have any advice or dialplan magic on how to do 3) ? ?
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