[VoiceOps] Caller-ID: SIP From vs. P-Asserted-Identity

Ryan Delgrosso ryandelgrosso at gmail.com
Mon Jul 23 22:38:46 EDT 2012

I have to agree with Alex on this one.


Only one matters and they are weighted in that order.

If you need the billing number to be different than the highest 
applicable in the above list, insert a diversion header and be done with 
it (warning not all term carriers properly obey diversion headers but it 
is the most correct answer)

On 07/23/2012 02:45 PM, Jay Hennigan wrote:
> On 7/23/12 2:34 PM, Eric Wieling wrote:
>> Set a Diversion: header to specify the CallerID number.
>> Example:
>>      Diversion: <sip:+12125551212 at>;reason=rcf
>> The ;reason=whatever is optional, I don't know of any carriers which use it.
> That would likely work, but it is easier said than done.  Sometimes it
> isn't diverted.  An agent in a pool wants to display the pool inbound
> number in CLID but keep the individual number for billing and CDRs.  Or
> the IAD on site doesn't support diversion headers, etc.
> --
> Jay Hennigan - CCIE #7880 - Network Engineering - jay at impulse.net
> Impulse Internet Service  -  http://www.impulse.net/
> Your local telephone and internet company - 805 884-6323 - WB6RDV
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