7 Mistakes You’re Making with STIR/SHAKEN (And How to Fix Your Cloud Communication Solutions)

The siren song of STIR/SHAKEN compliance is hard to ignore. It promises a world where every call is a "digital handshake": a moment of absolute trust between you and your customer. You’ve likely heard it described as the magic wand that will finally banish the "Spam Likely" label from your outbound calls. But here is the reality: if you treat STIR/SHAKEN as a simple checkbox on a regulatory to-do list, you are likely setting your cloud communication solutions up for failure.

Are you accidentally sabotaging your own answer rates? Is your technical team chasing ghosts in the network while your legitimate calls get caught in a web of filters? In the race to implement these protocols, many businesses trip over the same seven hurdles.

Let’s peel back the rose-tinted glasses and look at the mistakes currently haunting your telephony infrastructure: and, more importantly, how you can fix them to restore your brand's voice.

1. The "A-Grade" Obsession: Misusing Attestation Levels

It’s a common trap: believing that if you don’t have "A-level" attestation on every single call, your business is failing. Many organizations try to force an "A" on numbers they don’t strictly control: like BYO (Bring Your Own) numbers or ported lines: thinking it makes them look more trustworthy.

The Mistake: Falsely attesting to "A" when the caller or the number hasn't been strictly verified. Analytics engines are smarter than you think; they detect these patterns. If your "A" traffic looks like a bot, the filters will come for you.

The Fix: Embrace the truth of the alphabet. Use A for numbers you clearly own and control. Use B for verified customers where you can't fully vouch for the number. Use C for transit traffic. By being honest with the metadata, you build a consistent reputation with carriers rather than a suspicious one.

2. Assuming the Upstream Carrier is Your Guardian

Do you trust your wholesale carrier to sign your calls for you? This is a dangerous assumption. Many cloud telephony resellers believe that because they pay for a trunk, the provider handles the "SHAKEN" part automatically.

The Mistake: Letting calls leave your platform unsigned. In many regions, the party billing the end customer is the one responsible for the signature. If you aren't signing your own traffic, carriers might downgrade your trust level or mark you as "unverified."

The Fix: Take ownership of your identity. Obtain your own STIR/SHAKEN certificate. Ensure all outbound SIP traffic flows through your own Session Border Controllers (SBCs) or a dedicated signing service before it ever hits the public network. Don't leave your reputation in someone else's hands.

3. The "Swiss Cheese" Strategy: Leaving Gaps in Your Network

Is your security as solid as it looks, or does it have holes? We often see businesses that sign calls leaving their main office but forget about their backup trunks, branch offices, or international routes.

The Mistake: Inconsistent attestation across egress paths. If your main trunk sends "A" but your backup sends "C" or nothing at all, analytics engines flag the inconsistency. It looks like your number has been hijacked.

The Fix: Map every single way a call can leave your network. Enforce a strict routing rule: no call leaves unsignable. If a branch SBC can't sign, hairpin that traffic through a central hub that can. For more on how to secure these complex environments, check out our guide on cloud telephony security secrets.

4. Caller ID Chaos: Using Invalid or Low-Quality CLIs

Are you letting your agents or customers set arbitrary Caller IDs? If you are using unassigned numbers, "test" numbers, or rotating through thousands of DIDs to "evade" filters, you are waving a red flag at every carrier in the country.

The Mistake: Using numbers that aren't in the PSTN database or reusing numbers across unrelated brands. This is a surefire way to get your traffic blacklisted.

The Fix: Maintain a strict number registry. Map every calling number to a specific, verified brand. Use stable, high-quality DIDs that are registered with analytics providers. Remember, STIR/SHAKEN says the number is genuine; your behavior determines if it’s "wanted."

5. Weak Key Management: The "Keys Under the Mat" Problem

Your STI private keys are the crown jewels of your communication system. If they are compromised, an attacker can sign fraudulent calls as "trustworthy" using your identity.

The Mistake: Storing private keys in plain text files on application servers or failing to rotate them. Manual, fragile renewal processes often lead to expired certificates: which means your calls suddenly stop being verified.

The Fix: Treat your keys like a bank vault. Use a Cloud Key Management Service (KMS) or a Hardware Security Module (HSM). Automate your certificate renewals so you never have to worry about an expiration date killing your call volumes.

6. The International Blind Spot: Ignoring Non-SIP Limitations

Are you expecting STIR/SHAKEN to fix your global reach overnight? While it’s a powerful tool, it doesn’t yet cross every border or bridge every legacy TDM (analog) connection.

The Mistake: Over-optimizing for STIR/SHAKEN while ignoring non-signed traffic. If you have international calls, they might lose their "Identity" header the moment they hit a gateway. If your system isn't prepared for this, you might accidentally block legitimate global business.

The Fix: Implement a "defense in depth" strategy. Use STIR/SHAKEN as one part of your framework. Combine it with traffic analytics, Know Your Customer (KYC) protocols, and fraud detection. This is especially critical for healthcare cloud communication solutions where global connectivity can be a matter of life and death.

7. Treating Compliance as a "One and Done" Event

The most dangerous mistake is thinking that once you are "compliant," you are finished. The landscape of telephony fraud moves faster than a Silicon Valley startup. If you aren't monitoring your results, you're flying blind.

The Mistake: Implementing signing but never verifying how the calls look at the far end. Are they actually showing up as "Verified"? Or is a carrier in the middle stripping your headers?

The Fix: Continuous monitoring is your new best friend. Instrument your SBCs to log every signing status. Perform end-to-end tests by calling test numbers on different mobile carriers. If you see a dip in answer rates, investigate the "Identity" header errors immediately.

Balancing the Scale: Trust vs. Efficiency

Finding the right balance between strict security and operational efficiency is a delicate dance. Think of it as a digital scale: on one side, you have the weight of regulatory compliance; on the other, the need for seamless, high-volume communication.

The Human-Machine Duet: Don't let the technology dictate your strategy. Use the tools to amplify your brand's voice, not silence it under a mountain of metadata. STIR/SHAKEN is the foundation, but your communication habits: pacing, number stability, and brand consistency: are the walls of the house.

Remember:

• Do audit your attestation levels regularly.

• Don't assume your carrier has your back.

• Do automate your certificate management.

• Don't ignore your international traffic gaps.

Are you ready to stop guessing and start knowing? If your call answer rates are plummeting or you’re worried about your carrier's protection measures, it’s time for a professional audit.

At Dunamis Consulting Inc, we bring 15 years of experience to the table to help you navigate the complexities of cloud telephony. Let’s fix your communication gaps together. Contact us today to schedule your cost analysis and security consultation.