asterisk users - Jul 2007 - SetCallerPres and Cisco PRI

Does anybody know if SetCallerPres works on calls via SIP through a 
Cisco gateway?  We are trying to mark outbound calls as anonymous and we 
set it to prohib, but calls still show outbound callerid.  We are SIP 
from * to the Cisco gateway and then PRI outbound.  If we strip the 
callerid num, then the first number on the PRI gets added as teh 
callerid, so we can't do that.  We need to make it anonymous so that it 
shows as unknown on the other end.

Peder

Hi Peder,

You tried blanking the caller ID field and it didn't work?

   i.e., exten => ...,n,Set(CALLERID(all)=)

It worked for me, although my media gateway was not a Cisco one.

Whether SetCallerPres() will work depends entirely on what it 
accomplishes.  Does it just alter the cosmetic From: line, and
does the Cisco gateway take stock in that?  Or does it tack on
the draft privacy headers (Remote-Party-ID) and set privacy to
on/full?

My gut feeling is that SetCallerPres() applies to calls placed
directly out of a PRI interface, not SIP, because "presentation"
is a term typically applied to caller ID in an ISDN, not a SIP
context.

It is hard to tell whether this intuition is correct because
SetCallerPres() is fundamentally implemented in apps/app_setcallerid.c
which calls ast_set_callerid() in main/channel.c and appears to apply
to a variety of channel types variously.

If this doesn't work, try this:

  
http://www.voip-info.org/wiki/view/P-Asserted-Identity+and+Remote-Party-ID+header

A Cisco MGW should support that just fine.

Good luck,

--
Alex Balashov
Evariste Systems
Web    : http://www.evaristesys.com/
Tel    : +1-678-954-0670
Direct : +1-678-954-0671

PS.  Check this out:

http://bugs.digium.com/print_bug_page.php?bug_id=2471

--
Alex Balashov
Evariste Systems
Web    : http://www.evaristesys.com/
Tel    : +1-678-954-0670
Direct : +1-678-954-0671