[asterisk-users] STIR/SHAKEN

Jeff LaCoursiere jeff at stratustalk.com
Mon Mar 8 10:31:45 CST 2021

Hi Alex,

Are they doing anything on inbound for you, and have you made any 
decisions about how you will display the tag to your customers? I have 
been focusing on the outbound piece of this, just starting to think 
about what to do with the incoming data...


Jeff LaCoursiere
StratusTalk, Inc.

On 3/7/21 7:08 PM, Alexander Perkins wrote:
> Hi Greg.  In our use case, we purchase DIDs from them.  So, they are 
> the inbound carrier (they are a CLEC and IPES) and STIR/SHAKEN Service 
> Provider.  However, we do not use them for termination.  They offer 
> service termination, but we do not use them due to 
> existing contracts.  So, in order to have our calls signed, we needed 
> them to do it.  The biggest issue we've come across is the number of 
> companies /able to /provide this service is limited, especially to the 
> Asterisk community. I stress able to because even though some 
> companies are Service Providers, they are simply not 
> technically capable of offering it.
> I will send you my contact's information at TILTX privately.  He's a 
> subject-matter expert with the STIR/SHAKEN framework and he's offered 
> us invaluable help.
> Thanks,
> Alex
> On Sun, Mar 7, 2021 at 1:43 PM Greg Troxel <gdt at lexort.com 
> <mailto:gdt at lexort.com>> wrote:
>     Alexander Perkins <alexanderhenryperkins at gmail.com
>     <mailto:alexanderhenryperkins at gmail.com>> writes:
>     > They ended up creating an AGI script for us that handles
>     everything.  At
>     > the end of the day, all we needed to do was pull down the
>     script, and add
>     > the exten => s,n,AGI(TILTX-SHAKEN.agi) command and it handles
>     > everything else.
>     I wonder if you could step back and explain the big picture, as
>     I'm not
>     really following this.   As I understand it:
>       usually asterisk is used as a pbx
>       STIR/SHAKEN is a protocol run between carriers to prove the
>     authority
>       to use the claimed callerid
>       when someone gets service from a carrier and connects to it from
>       asterisk, I would expect the carrier to basically filter the claimed
>       callerid to be from the set of values recorded with your account as
>       legit, and for the carrier to do the STIR/SHAKEN authentication.
>     So I wonder if your asterisk instance is connecting to the PSTN as a
>     top-level carrier, or, more likely, I am confused in some way.


	*Jeff LaCoursiere*

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