[Asterisk-Users] Changing caller id on transfer

[Cosmin Prund]

I'm doing unattended transfers (ie: I dial #123 to transfer).

I thought there is an easy way to know you're dialing out OR talking to
someone and doing an unattended transfer. If there's no such thing, I'll
just go with the suggestion of prefixing the caller id with something all
phones can understand, and doing this for all calls.

I do not need to care about outbound transfers since all my outbound lines
are FXO and I can't spoof the caller id anyway!

Are there any "codes" caller-id aware analog phones understand and I can
place in the caller id to be easily identified? 

> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-
> bounces at lists.digium.com] On Behalf Of Joseph Tanner
> Sent: Thursday, March 02, 2006 10:43 PM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: Re: [Asterisk-Users] Changing caller id on transfer
> 
> Hrm, well it depends exactly how you're transferring calls as to how
> you'd write it in extensions.conf.  Is it being transferred to an
> internal line or to an external line?  If external, then of course you
> need to be able to set the outgoing callerid (you'd basically be
> spoofing it, but that shouldn't be an issue).
> 
> I have done something similar, but not exactly like what you're
> wanting.  I'm not sure what the best way to do it would be.  Perhaps
> you could set the callerid early in asterisk in a variable (name it
> something like, ${OUTGOINGCALLERID}).  Before making an outgoing call,
> check asterisk's built-in callerid variable, if it's empty then set it
> to your special variable.  If it's not empty, then use it (so a normal
> outgoing call wouldn't already have callerid set, and would use your
> value, but if an incoming call came in then the callerid variable
> would be set, and we'd use that instead).
> 
> The way I did it would require that a user start off in a different
> context based on whether they're receiving a call, or making an
> outgoing call.  Perhaps you can check for a flash, or make them dial a
> special extension to make an outgoing, transferred call?  I dunno, my
> setup's unique and I'm not sure how you can adapt it to your needs.
> Anyways, if you can get them in a different context, then it's simple.
>  In your normal outgoing context, the very first line should be what
> sets the callerid.  In the special incoming then outgoing context, do
> something like this:
> 
> exten => _1NXXNXXXXXX,8,Goto(cell-out,${EXTEN},2)
> 
> In this case, _1NXXNXXXXXX is the extension matched when I dial a
> normal long-distance number (such as 1-931-555-1212).  It jumps to the
> [cell-out] context (can name this anything you want, this is just my
> setup with calling out via bluetooth), it keeps the extension the same
> (so in [cell-out] we would need an extension of _1NXXNXXXXXX), and
> goes to priority 2.  This bypasses the first priority, which is where
> you set callerid for regular outgoing calls, so now you'll use the
> existing value for the outgoing callerid, instead of changing it.
> 
> You could just as easily recreate your dialplan for outgoing calls
> that are transferred, but I prefer to jump to an existing context,
> that way I only have to change one part of extensions.conf.  I know
> that if I can make a long-distance call from a local extension, then
> it'll work when someone calls in and gets bridged, because the code is
> exactly the same except for setting callerid.
> 
> Hope that helps more than it confuses.
> 
> Joseph Tanner
> 
> On 3/2/06, Cosmin Prund <cosmin at adicomsoft.ro> wrote:
> > As usual, this is most likely a easy question, but here it goes any way:
> >
> > How can I change the caller id on a transferred call so the called party
> > knows the call has been transferred from a colleague and it's not coming
> > directly from our outside lines?
> >
> > The story goes like this:
> > 1) Client calls. All phones ring.
> > 2) Someone picks up the phone.
> > 3) The phone gets transferred to someone.
> > 4) The person that gets the transferred call sees the original caller id
> and
> > doesn't know the call has been transferred. I'd like the person that
> gets
> > the transfer to see the caller id with a digit prefix. Ex: Original
> > caller-id: 0269123456; Caller id if the call has been transferred:
> > 1*0269123456
> >
> > I know I can use SetCallerId(1*${CALLERIDNUM}) but how do I know I'm
> doing a
> > transfer and not calling someone?
> >
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