A customer may recognize a company name yet still hesitate to answer when the call arrives without a credible identity signal. In modern communications, authentication is becoming the technical foundation behind the trust that determines whether customers engage.
Trust has always influenced business relationships but digital communication has changed how quickly that trust can disappear. For telecom providers and enterprises, an authenticated identity can help distinguish legitimate communication from spoofed or suspicious traffic while creating a stronger foundation for customer engagement.
Hiya's 2026 State of the Call research found that 86% of consumers do not answer unidentified calls and 73% believe businesses should identify themselves through caller ID. The study surveyed more than 12,000 consumers across six countries. (Hiya Blog)
That makes authentication more than a technical requirement. It becomes part of the customer experience.
Why Authentication Is Becoming a Customer Trust Requirement
Customers need confidence before they engage
A phone call is an unusually direct communication channel. Unlike an email that can be reviewed later, a call asks the customer to make an immediate decision: answer or ignore.
When the identity behind that call is uncertain, customers have a reason to hesitate.
Consider a simple scenario:
Unknown number → uncertainty → call ignored
Now compare it with:
Recognized identity → greater confidence → higher likelihood of engagement
Authentication cannot guarantee that someone will answer a call but it can provide an important trust signal within the broader calling ecosystem.
The trust problem has an economic impact
If a business makes 10,000 legitimate outbound calls and a significant portion are ignored because customers cannot confidently identify them then the organization is losing opportunities despite having functioning telecom infrastructure.
The network successfully delivered the call.
The customer simply did not trust it enough to answer.
That distinction is critical for businesses that rely on voice for sales, support, healthcare, financial services, logistics or appointment management.
Authentication Creates Evidence Behind Caller Identity
Caller ID alone is not the complete trust model
A displayed telephone number tells the recipient what identity is being presented. It does not by itself prove that the caller is authorized to use that identity.
This is where caller authentication becomes important.
The FCC describes STIR/SHAKEN as having two connected components: technical authentication and verification of caller ID information plus certificate governance that maintains trust in that authentication information. (FCC Docs)
STIR/SHAKEN uses public-key cryptography to allow caller identity information to travel with an IP-based call so the terminating provider can verify it. (FCC Docs)
Think of authentication as a digital credential
A physical security badge does more than display a person's name. It provides evidence that the person has been authorized to enter a particular environment.
Authentication plays a similar role in communications.
It helps establish:
Who is originating the call
Whether the presented number is authorized
Whether authentication information can be verified
Whether the trust chain remains valid
This creates a stronger foundation than relying solely on an unverified number.
STIR/SHAKEN Connects Authentication With Customer Experience
From network security to visible trust
STIR/SHAKEN operates within the network but its effects can extend to the customer experience.
Twilio describes SHAKEN/STIR as a framework designed to combat caller ID spoofing by creating a chain of trust for telephony identity. Its implementation allows service providers to cryptographically sign calls so terminating providers can verify caller identity. (Twilio)
Twilio also supports using SHAKEN/STIR information for applications such as outbound contact centers, sales dialers, voice notifications and AI voice applications. (Twilio)
The broader principle is straightforward:
Strong identity infrastructure → stronger trust signals → better conditions for customer engagement
Authentication is not the same as reputation
This distinction matters.
Authentication helps establish whether the caller's identity has been authenticated within the relevant framework. It does not automatically guarantee that the caller is reputable or that every recipient will answer.
Customer trust can also depend on:
Call frequency
Previous interactions
Spam detection
Brand recognition
Caller reputation
Call context
Customer expectations
Authentication should therefore be viewed as one foundational layer of a broader trust strategy.
Certificate Infrastructure Is Part of Customer Trust
Trust requires an infrastructure underneath it
Authentication does not operate in isolation.
STIR/SHAKEN relies on certificates and a trust framework that allow providers to validate the information associated with authenticated calls. The FCC specifically identifies certificate governance as one of the two core components of STIR/SHAKEN. (FCC Docs)
That means certificate operations become directly relevant to communication trust.
A provider needs to manage activities such as:
Certificate issuance
Private-key management
Certificate publishing
Renewal
Revocation
Validation
Lifecycle monitoring
If certificate infrastructure is poorly managed then the authentication layer becomes harder to operate reliably.
Peeringhub focuses on this trust layer
Peeringhub provides a carrier-grade STIR/SHAKEN certificate authority service designed for voice providers that need certificate enrollment, delegated signing, attestation controls and developer automation. (Peering Hub)
Its platform also provides an Identity Header Parser that can decode PASSporT information and inspect attestation, origination, destination, x5u, algorithm and signature status. (Peering Hub)
This gives providers tools for working with the technical foundation behind authenticated calling rather than treating caller trust as a purely customer-facing feature.
Automation Makes Authentication Easier to Scale
Manual trust infrastructure creates operational friction
Imagine a provider managing certificates manually across multiple environments.
Each certificate can require generation, configuration, publishing, monitoring and eventual renewal.
As certificate volumes increase the administrative workload increases as well.
Automation changes the operating model.
Peeringhub operates a STI-ACME service compliant with RFC 8555. Its documented ACME workflow covers directory discovery, authorization, order creation, challenge processing, CSR submission and certificate retrieval. (Peering Hub Documentation)
Its developer API also provides workflows for generating private keys and requesting STIR/SHAKEN certificates. (Peering Hub Documentation)
Automation creates consistency
Think of authentication infrastructure like a railway system.
The trains are the calls.
The tracks are the network.
The signaling system determines whether those trains can move safely through the network.
Certificate automation helps keep the signaling infrastructure operational as the number of routes increases.
That is why automation is not simply about saving engineering time. It helps create a repeatable trust infrastructure that can scale with communication volume.
How Different Providers Approach Customer Trust
Peeringhub: trust infrastructure and certificate management
Peeringhub's focus is the STIR/SHAKEN certificate and authentication layer. Its platform combines certificate authority capabilities with web-based management, APIs, ACME workflows and developer tooling. (Peering Hub)
This approach is particularly relevant for service providers that want programmable control over their certificate infrastructure.
Twilio: authentication within a communications platform
Twilio approaches the problem from a broader communications-platform perspective. Its SHAKEN/STIR offering includes onboarding through the Console or Trust Hub REST API along with vetting and attestation workflows. (Twilio)
This makes trusted calling part of a wider programmable voice environment.
The strategic difference
These approaches serve different architectural needs.
Peeringhub focuses on the trust and certificate infrastructure while Twilio integrates authentication into a broader communications platform.
For telecom providers the important question is not simply which feature exists. It is how authentication fits into the organization's existing network, operational processes and customer communication strategy.
Building Customer Trust Beyond Authentication
Authentication is the foundation rather than the finish line
A strong trust strategy should combine technical authentication with customer-facing identity and operational discipline.
Providers can consider a layered approach:
Authenticate identity Use established caller authentication mechanisms such as STIR/SHAKEN.
Maintain certificate trust Manage certificates throughout their lifecycle.
Monitor call behavior Track authentication results and unusual traffic patterns.
Protect reputation Investigate spam labeling and customer complaints.
Improve caller recognition Where appropriate use trusted identity and branded calling capabilities.
Measure engagement Track answer rates and customer outcomes.
This is especially important because trust is dynamic.
A customer may trust a number today and ignore it tomorrow if repeated unwanted calls are associated with it.
Measure the customer outcome
Technical metrics should ultimately connect to business results.
Useful measurements include:
Call answer rate
Authentication success
Attestation levels
Spam labeling
Customer complaints
Call abandonment
Conversation rate
Conversion rate
The goal is to understand the complete chain:
Authentication → identity confidence → engagement → business outcome
Conclusion: Trust Starts With Verifiable Identity
Customer trust in telecommunications cannot be created through branding alone. It requires infrastructure capable of establishing and maintaining confidence in who is communicating.
The growing number of unanswered unidentified calls demonstrates why this matters. Hiya's 2026 research found that 86% of consumers do not answer unidentified calls. (Hiya Blog)
STIR/SHAKEN provides an important technical foundation by authenticating caller identity and creating a certificate-backed trust framework. (FCC Docs)
For providers, the opportunity is to build on that foundation with reliable certificate management, automation and operational visibility.
Peeringhub supports this model through its STIR/SHAKEN CA service, ACME infrastructure and developer APIs designed to simplify certificate issuance and management. (Peering Hub)
Customer trust begins when identity can be verified. Build the infrastructure that makes trusted communication possible with Peeringhub.
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