Once signed, you just pass it on with its existing signature. Only the
originator signs it. It could technically have multiple headers, but
that's not the intent.
As for on the ground realities, I can only point out that out of 8008
possibly signed inbound calls in the last 24 hours (only my intelliquent
SIP trunks have the ability to pass the identity header right now):
319 have attest A,
None have attest B,
2 have Attest C
310 of the calls were T-Mobile, 5 were comcast, and 6 were other.
Out of the last 10,000 calls I have originated toward the STIR/SHAKEN
routes (which covers about 2 hours), I signed:
2643 have attest A
4695 have attest B (this is our default where I haven't explicitly
verified the customer is only sending numbers that are theirs)
244 have attest C (this gets triggered if there's a header indicating
the call was redirected)
It's really not as complicated as people are making it out to be.
Transnexus has been great to work with, as has Inteliquent.
-Paul
On 9/2/20 2:52 PM, Alex Balashov wrote:
Thank you, that’s very clear and sums it all up!
One lingering question: even without providing a fully attestable
chain of custody, if the call took a route A -> B -> C, are signatures
cumulative such that I could block calls attested by B coming through
C? Or am I constrained to blocking a certain level of attestation only
through the last/proximate peering hop (C) that directly touches me?
I suppose success is going to come down to the on-the-ground
realities, political viability, etc of taking that “block attested
calls from carrier X” step.
—
Sent from mobile, with due apologies for brevity and errors.
On Sep 2, 2020, at 2:47 PM, Paul Timmins <ptimm...@clearrate.com> wrote:
The solution is that you sign your calls with your certificate.
Carriers aren't doing LNP dips to verify the number is really yours,
they're trusting your attestation (A: yes, the caller id is verified,
B: it comes from our customer, but not verified, C: "this touched our
switches, good luck with it"). If you attest total nonsense as A, or
send tons of nonsense in general, people start blocking calls you sign.
It really verifies who is sending the call, and what that company
says the call is verified, not a full chain of custody of the number
back to the NANPA/PA. Could you attest A a call from "0" or "911", or
"999-999-9999"? Yes, you could. It'd work for a while, til someone
said "Wow, Alex's SPID is signing tons of bullshit. Let's block
attested calls from his SPID"
-Paul
------------------------------------------------------------------------
*From:* VoiceOps <voiceops-boun...@voiceops.org> on behalf of Alex
Balashov <abalas...@evaristesys.com>
*Sent:* Wednesday, September 2, 2020 2:42 PM
*To:* VoiceOps
*Subject:* Re: [VoiceOps] Outsourcing STIR/SHAKEN Setup
LCR or no LCR, using a termination vendor that is different to one’s
origination vendor for a given CID is more normal than not in VoIP. I
would guess it’s the default wholesale use-case. Origination and
termination are very different business models with radically
different economics.
I’m not clear on what the official STIR/SHAKEN solution to this is. I
assume it’s delegated certificates as Jared suggested.
—
Sent from mobile, with due apologies for brevity and errors.
On Sep 2, 2020, at 2:39 PM, Carlos Alvarez <caalva...@gmail.com> wrote:
If I understand correctly, no as long as your providers are all
supporting this. What I think you mean is that you get
origination/DIDs from say Bandwidth, and you use LCR to route calls
to whoever is cheapest? There are ways to work with that challenge
as long as your carriers are ready to do so.
On Wed, Sep 2, 2020 at 11:28 AM Jared Geiger <ja...@compuwizz.net
<mailto:ja...@compuwizz.net>> wrote:
If we purchase our numbers through wholesalers, would we need
delegated certificates if we are sending an outbound call
through a vendor that is not the wholesaler we got the number from?
On Wed, Sep 2, 2020 at 7:22 AM Dave Frigen <dfri...@wabash.net
<mailto:dfri...@wabash.net>> wrote:
There is a STIR-SHAKEN process of registering and testing
with the Policy
Administrator (PA) as a certified Service Provider (SP)
before you can
purchase SHAKEN token certificates from a Certificate
Authority (CA) and
begin to engage in using the technology. This is not a walk
in the park.
Transnexus is one of two public CA's in the U.S. today. They
are experts on
the subject and can help you through both processes. In
order to get the
best call attestation you must prove to the PA and CA that
you are a bono
fide service provider and not a bad-acting enterprise on a
network that
deserves lesser attestation levels.
One of the registration requirements is a SP 's access to
valid national
phone number pools. This has been very confusing for some
resale providers
that purchase and use numbers from wholesalers only. If your
organization
does not have it's own numbering resources, you can register
using your
wholesale provider's numbering pool data. Don't assume you
have to register
with the FCC and possess your own pool of numbers to become
a registered
SHAKEN SP.
SHAKEN ROBO call mitigation is a new frontier, and obtaining
the best
attestation level possible for a SP is essential to the SP
and the SHAKEN
ecosystem. Register and test for the best attestation level
possible.
Transnexus is a seasoned expert on the subject and a U.S.
registered CA with
the PA.
Dave
-----Original Message-----
From: VoiceOps <voiceops-boun...@voiceops.org
<mailto:voiceops-boun...@voiceops.org>> On Behalf Of Mary
Lou Carey
Sent: Tuesday, September 1, 2020 5:36 PM
To: Dovid Bender <do...@telecurve.com
<mailto:do...@telecurve.com>>
Cc: Voiceops.org <voiceops@voiceops.org
<mailto:voiceops@voiceops.org>>
Subject: Re: [VoiceOps] Outsourcing STIR/SHAKEN Setup
I'm a Carrier Consultant who's been helping CLEC, IXC,
Paging, Wireless and
VOIP carriers install and maintain their PSTN networks for
the the last 20
years. I can help clients get their FCC Certification to
become a
STIR/SHAKEN carrier as well as Numbering Resources, NPAC /
LSR training, etc
(if you need those pieces). Once my clients get their
certification, I refer
them to TransNexus. Jim and his team can help you with the
process of
turning your STIR/SHAKEN services up.
MARY LOU CAREY
BackUP Telecom Consulting
Office: 615-791-9969
Cell: 615-796-1111
On 2020-08-31 05:37 AM, Dovid Bender wrote:
> Hi,
>
> Does anyone have a recommendation for a company that get
us everything
> needed for STIR/SHAKEN setup? By setup I mean helping us
file to get a
> cert etc. From the small research I have done there is a
lot of
> fragmented information out there and it would be easier
for us to pay
> someone else to do this then invest our own time to take
care of this.
>
> TIA.
>
> Regards,
>
> Dovid
> _______________________________________________
> VoiceOps mailing list
> VoiceOps@voiceops.org <mailto:VoiceOps@voiceops.org>
> https://puck.nether.net/mailman/listinfo/voiceops
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