SilentAuth+
for Operators
Your SIM infrastructure already authenticates every subscriber silently. Deploy TS.43, expose it via CAMARA Open Gateway, and earn per-authentication API revenue — while cutting AIT fraud on your own network.
104+
MNO network reach worldwide
60+
Countries via Open Gateway
<500ms
Verification latency
0
OTP codes — SIM match is the proof
THE OPERATOR OPPORTUNITY
Silent authentication is network intelligence you already own.
TS.43 makes it commercially accessible.

Every MNO continuously authenticates subscriber SIM cards across its network. TS.43 and CAMARA give operators the standardised infrastructure to expose that authentication intelligence as a revenue-generating API — for the first time, with full 2G–5G coverage via USSD fallback.
Enterprise triggers authentication
Enterprise calls U2opia SilentAuth+ API. U2opia routes to the subscriber's home MNO via phone number.
TS.43 entitlement token issued
Your TS.43 server issues a short-lived EAP-AKA token tied to the subscriber's SIM. No user action. No app permission. Network-side only.
SIM identity confirmed
EAP-AKA cryptographic handshake confirms the SIM is the legitimate subscriber — identical to your existing network authentication.
Result returned + revenue credited
Authentication result returned to enterprise. Per-authentication revenue share credited to your operator account.
OPERATOR REVENUE MODEL
New API revenue. Near-zero incremental network cost. AIT reduction as a bonus.
SilentAuth+ monetises an EAP-AKA operation your network already performs — the incremental compute and signalling cost is minimal. Revenue flows on two parallel tracks: direct API fees and AIT fraud reduction.
01
Direct per-authentication API revenue
Every SilentAuth+ call against your subscriber base generates per-event revenue. U2opia bills enterprises, settles with operators via GSMA Open Gateway commercial framework, and delivers monthly revenue reports.
02
AIT fraud reduction — protect OTP revenue
When enterprises migrate from OTP SMS to SilentAuth+, they remove A2P traffic that AIT fraudsters inflate. Each auth shifted is a unit of fraud surface eliminated — directly protecting legitimate A2P revenue.
03
Expanded enterprise market via aggregation
U2opia's 104+ operator network means enterprises integrate once and access all operators. Your capability is accessible to every enterprise in U2opia's network — without dedicated sales relationships.
04
GSMA Open Gateway differentiator in RFPs
Enterprises evaluating MNO partnerships for authentication increasingly require CAMARA Open Gateway compliance — your listing in the programme places you on enterprise RFP shortlists automatically.
DEPLOYMENT OPTIONS
Two paths to TS.43 deployment — hosted or on your own infrastructure.
Both options produce identical CAMARA API output and the same revenue model. The difference is where the TS.43 entitlement server runs and who operates it.
Option A — U2opia Hosted Option B — Operator-Deployed
Time to production
6–10 weeks
3–6 months
Infrastructure investment
None required
Operator hosts entitlement NF
Subscriber data
Authentication via operator HLR/HSS; U2opia hosts entitlement layer
All subscriber data stays within operator network
CAMARA API compliance
U2opia manages updates & versioning
U2opia provides API gateway; operator controls auth logic
USSD fallback
Included
Deployed as separate NF
Best for
Operators new to TS.43 — fastest path
Operators with existing NF deployment capability
Option A — U2opia Hosted Option B — Operator-Deployed
Time to production

6–10 weeks
3–6 months
Infrastructure investment

None required
Operator hosts entitlement NF
Subscriber data

Authentication via operator HLR/HSS; U2opia hosts entitlement layer
All subscriber data stays within operator network
CAMARA API compliance

U2opia manages updates & versioning
U2opia provides API gateway; operator controls auth logic
USSD fallback

Included
Deployed as separate NF
Best for

Operators new to TS.43 — fastest path
Operators with existing NF deployment capability
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WHY OPERATORS CHOOSE SILENTAUTH+
Unique advantages no other silent authentication solution offers operators.
From 2G–5G coverage to passive SIM swap detection, SilentAuth+ is built around the operator's network strengths — not around workarounds.
Only silent auth with 2G–5G coverage
USSD fallback extends SilentAuth+ to 2G and 3G subscribers with no internet required. No competitor delivers full generation coverage in a single silent authentication product.
CAMARA compliant — Open Gateway ready
SilentAuth+ exposes your capability via CAMARA REST APIs aligned with GSMA Open Gateway standards. CAMARA Fall25 meta-release compliance included out of the box.
Sub-300ms latency — enterprise SLA-grade
EAP-AKA authentication completes in under 300ms, meeting the latency requirements of enterprise applications that need inline authentication. No OTP delays or delivery retries.
SIM swap detection — enriched signal
Authentication events are correlated with SIM swap history. Recent swap? The authentication response carries a risk signal enterprises can use to trigger step-up verification.
AIT fraud surface reduction
Each enterprise authentication moved from OTP SMS to SilentAuth+ removes a unit of A2P traffic from the AIT fraud surface — measurable ROI, not just a security benefit for enterprises.
No custom enterprise sales required
U2opia's aggregation model exposes your capability to every enterprise in its network. Join once; U2opia handles enterprise relationships, billing, and commercial negotiations.
TECHNICAL ARCHITECTURE
The SilentAuth+ stack — from SIM to CAMARA API in four layers.
SilentAuth+ is built on standard network functions and open interfaces. The operator contributes the authentication intelligence. U2opia contributes the entitlement layer, USSD path, CAMARA gateway, and enterprise network.
COMPETITIVE COMPARISON
SilentAuth+ versus other operator authentication API options.
Evaluate on coverage, standard compliance, and deployment complexity — not just headline latency numbers.
Capability SilentAuth+ (U2opia) TS.43 only (no aggregator) OTP SMS (status quo)
Authentication method
EAP-AKA cryptographic
EAP-AKA cryptographic Knowledge-based (OTP)
2G / 3G coverage
Yes — USSD fallback
No — 4G/5G only Yes
Wi-Fi authentication
Yes — CIBA + TS.43 token
Partial — CIBA required Yes (A2P SMS)
User step required
None — fully passive
None Yes — read + type code
CAMARA compliant
Yes — Fall25 stable
Requires custom work Not applicable
Enterprise aggregation
104+ MNOs, one API
Operator-by-operator Not applicable
AIT fraud reduction
Direct — replaces OTP traffic
Direct None — source of AIT
Deployment time
6–10 weeks (hosted)
12–24 months Existing
Operator revenue model
Per-auth revenue share
Custom per-enterprise negotiation A2P termination fee (AIT-contaminated)
SilentAuth+ (U2opia) TS.43 only (no aggregator) OTP SMS (status quo)
Authentication method

EAP-AKA cryptographic
EAP-AKA cryptographic
Knowledge-based (OTP)
2G / 3G coverage

Yes — USSD fallback
No — 4G/5G only
Yes
Wi-Fi authentication

Yes — CIBA + TS.43 token
Partial — CIBA required
Yes (A2P SMS)
User step required

None — fully passive
None
Yes — read + type code
CAMARA compliant

Yes — Fall25 stable
Requires custom work
Not applicable
Enterprise aggregation

104+ MNOs, one API
Operator-by-operator
Not applicable
AIT fraud reduction

Direct — replaces OTP traffic
Direct
None — source of AIT
Deployment time

6–10 weeks (hosted)
12–24 months
Existing
Operator revenue model

Per-auth revenue share
Custom per-enterprise negotiation
A2P termination fee (AIT-contaminated)
FREQUENTLY ASKED QUESTIONS
SilentAuth+ for Operators — questions answered

What is Silent Authentication?

Silent Authentication verifies mobile users without sending an OTP or requiring any user action. Authentication happens at the mobile network level using SIM credentials.

How does Silent Authentication work?

Silent Authentication uses network-based identity verification, allowing applications to confirm a user's phone number through the mobile operator without displaying an OTP screen.

What is TS.43 Authentication?

TS.43 is a GSMA standard that enables silent authentication using EAP-AKA cryptographic verification through mobile network infrastructure.

Is Silent Authentication more secure than SMS OTP?

Yes. Silent Authentication eliminates OTP interception, phishing attacks, and code-sharing risks because no verification code is generated or entered.

What is the difference between Silent Authentication and OTP?

OTP authentication relies on a code sent to the user. Silent Authentication verifies the user directly through the mobile network without requiring any code entry.

What is USSD Fallback in Silent Authentication?

USSD fallback allows authentication to continue on devices or networks where TS.43 authentication cannot complete, extending coverage to older mobile devices.

 Which businesses use Silent Authentication?

Banks, fintech companies, telecom operators, digital wallets, super apps, eCommerce platforms, and enterprise applications use Silent Authentication to improve security and user experience.

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Ready To Reach Every Mobile User?
Start with SilentAuth+ and add customer experience and payments as you grow. One platform, carrier-grade, global.