asterisk users - Dec 2007 - Newbie question: how to proxy the *real* caller-id on find-me/follow-me

I've got the following set up:

Someone calls into my PBX on a single number (via SIP trunk from my 
carrier), and the get a voice menu of extensions.

On one of the extensions, it rings a bunch of internal SIP hardphones, 
plus ringing my cellphone via a hairpin through the cairrier's SIP/PSTN 
gateway.

The issue is that my cellphone shows my PBX's number, not the original 
calling number.

My dialplan looks like:

[globals]
...
TRUNK=SIP/sip_proxy-out
CELL=${TRUNK}/208xxxyyyy
PHILIP=SIP/bedroom_1&SIP/office_2&SIP/kitchen_1&${CELL}

[incoming]
exten => s,1,Answer()
; sometimes signaling and media get out of sync on cell networks...
exten => s,n,Wait(0.75)
exten => s,n,Playback(main-menu)
exten => s,n(exten),Background(vm-enter-number-to-call)
exten => s,n,WaitExten(5)
exten => s,n(goodbye),Playback(vm-goodbye)
exten => s,n(end),Hangup

...
exten => 111,1,Macro(stdexten,111,${PHILIP})
exten => 111,n,Goto(s,exten)

exten => 112,1,Macro(stdexten,112,${REDFISH})
exten => 112,n,Goto(s,exten)

...
exten => i,1,Playback(pbx-invalid)
exten => i,n,Goto(s,exten)

exten => t,1,Goto(s,goodbye)

Ok, so far, so good.

The problem is that when we hit "Macro(stdexten,111,${PHILIP})" and it
does the "Dial(${PHILIP})" which includes the 
SIP/sip_proxy-out/208xxxyyyy, 208xxxyyyy rings with my PBX's extension.

Oddly, the internal phones ring with outside caller's extension.

[sip_proxy-out]
type=peer
fromuser=208nnnmmmm
fromdomain=x.x.x.x
host=y.y.y.y
call-limit=5
nat=yes


So I'm not setting the callerid on the peer by default.  What am I 
missing?  Do I need to modify the stdexten macro to dial with the 'o' 
option?  Or can I set this explicitly with a 'Set' before calling the 
macro?  Or do I need to be missing with the RDNIS?

Oh, I'm running Asterisk 1.2.25...  (yes, I'll upgrade when AstLinux 
upgrades).

-Philip

P.S. I tried adding "|o" to the end of the PHILIP variable, but this 
didn't seem to make a difference.

Am Samstag, den 15.12.2007, 16:55 -0800 schrieb Philip
Prindeville:
> I've got the following set up:
> 
> Someone calls into my PBX on a single number (via SIP trunk from my 
> carrier), and the get a voice menu of extensions.
> 
> On one of the extensions, it rings a bunch of internal SIP hardphones, 
> plus ringing my cellphone via a hairpin through the cairrier's SIP/PSTN
> gateway.
> 
> The issue is that my cellphone shows my PBX's number, not the original 
> calling number.
This topic has been covered in length. In most cases it seems to end at
the fact that providers "correct" caller-ids they get from the calling
party: If you send any number which is assigned to the PRI (or SIP
trunk), that is fine; if you send another number, it will be changed to
the (first) number of the PRI/trunk.

Few providers allow for "foreign" caller ids to be sent over their
equipment - in some countries this is even illegal.

For example, one of my providers (German) allows to set any CALLERID,
but their documentation warns to not do stupid tricks, as calls can be
tracked and using malicious information will be prosecuted. This feature
is to be used only for sending _my_ cell phone number etc.

BR
Anselm